The current invention relates to a multi-position wing frame assembly, for example a window frame assembly, a door frame assembly, or a hatch frame assembly, for example configured to be received in a wall or a roof of a building. It furthermore relates to a multi-mode fitting system for a multi-position wing frame assembly.

Multi-position wings are known in the art primarily in the form of tilt-and-turn windows or doors, e.g. disclosed in US4035953, US4339892, GB2147657A, US2003029091 and US2009183449.

A tilt-and-turn window or door generally firstly comprises a frame assembly comprising a four-sided stationary outer frame, and a four-sided pivotal inner frame. The outer frame defines a rectangular opening and defines a plane of the wing frame assembly. The pivotal inner frame is pivotally connected to the outer frame by hinges configured to establish a turn axis and a tilt axis for the inner frame, usually tilt-and-turn hinges, e.g. tilt hinge plates.

Conventionally, the turn axis runs along either a left or right vertical side of the inner frame, and the tilt axis along a lower horizontal side thereof such that the window is tiltable downwardly.

Furthermore the door or window is usually held by an opening stay, e.g. bracket tongs, which engage on the upper edge of the door or window and operate in conjunction with the hinges. The door or window can be tilted only until the opening stay limits the tilting motion.

A known assembly secondly comprises a fitting system, which is driven via a transmission operated by a handle to displace the groove bands in the window or door sash. The turning handle usually has three positions, which correspond to three respective modes of the fitting system - namely a turn mode, a tilt mode, and a locked mode. The fitting system is configured to in these modes thereof respectively allow the inner frame to be moved between the closed position of the inner frame and opened positions of the inner frame while pivoting around the tilt axis, to allow such movement while pivoting around the turn axis - or not to allow such movement at all.

The locked mode of the fitting system allows the inner frame only to be in the closed position thereof, wherein the rectangular opening in the outer frame is closed. In this locked mode the fitting system blocks any movement of the inner frame out of the closed position. Conventionally, a vertical, downwardly pointing position of the handle corresponds to this mode of the fitting system.

According to this convention the handle is rotatable upwardly from this downwardly pointing position through 90° into a horizontal position, which corresponds to the turn mode of the fitting system. This turn mode allows the inner frame to be pivoted about the turn axis relative to the outer frame between the closed position of the inner frame and opened positions thereof.

From the horizontal position, the handle is rotatable further upwardly through 90° into an upwardly pointing vertical position, which corresponds to the tilt mode of the fitting system. This tilt mode allows the inner frame to be pivoted about the tilt axis relative to the outer frame between the closed position of the inner frame and opened positions thereof.

To establish the tilt-and-turn functionality, the known fitting system generally consists of numerous cooperating parts.

Its main part is an encircling flat metal strip secured and guided in a guide channel in the inner frame of the window or door, which is operatively linked to the hinges and the opening stay. The guide channel lies opposite a guide channel of the outer frame of the window or door. The flat strip is displaced by means of the handle on the outside of the inner frame, wherein an internal prong of the handle slidably grips an attachment pin connected to the flat strip.

The known fitting system further comprises a diversity of parts to facilitate the operation of the metal strip.

Firstly, it usually comprises a tensioning unit for compensating changes in length in the encircling flat strip and securing it by clamping. One end of the flat strip is clamped into the tensioning unit, the other end into an attachment member. The tensioning unit e.g. consists of a locating member slideably mounted in the guide channel of the inner frame, with a connecting piece being slideably inserted, a tensioning bolt inserted in the connecting piece, and a compression spring between the locating member and the tensioning bolt for permanently tensioning the flat strip. Secondly, securing devices are usually attached at several points to the flat strip and special, angled, corner link members further guide the strip. The securing devices e.g. each consist of a securing pin on the side of the inner frame and a locking plate on the side of the outer frame. The securing pin consists of an attachment member slidably guided in the guide channel of the inner frame and is provided with a corresponding opening for passage of the flat strip. Every corner link member e.g. consists of a basic member and an associated cover, and is provided with guides, arms and clip projections to guide the flat strip and grip angled flanges of the guide channel of the frame.

Thirdly, a locking plate is generally provided to act in association with the securing pin, and is secured, e.g. by means of a special configuration of dedicated securing parts, in

simultaneously in the horizontal and vertical directions.

Fourthly, a tilting device is usually comprised which includes a securing member on the side of the inner frame and a tilt mounting on the side of the outer frame. In tilted positions, the securing member engages the tilt mounting, e.g. by means of a hook connection: a hook of the securing member has a central notch which engages a corresponding recess in a hook of the tilting mounting. The securing member is slideably guided in the guide channel of the frame and has an opening at its ends for passing the flat strip. The flat strip is firmly clamped in position, e.g. by a screw acting in association with a corresponding opposing recess in the securing member. The tilting mounting is secured, e.g. by means of a special configuration of dedicated securing parts, simultaneously in the vertical and horizontal directions. The securing member is then able to assume different positions with respect to the tilting mounting when the inner frame is in a tilted position, a turning position and a closed position.

Fifthly, in order for the opening stay to limit the tilt angle only in the tilted position, a guide pin may e.g. project into a long slot of a guide rail which is set in the guide channel of the frame and determines the maximum tilt angle. An enlarged recess of the long slot is therein engaged by a pin of the adjustment device fitted in the guide channel of the inner frame. As connected via pivot linkages and a guide bar to the opening stay, a securing pin located in between one pivot linkage and a hinge then engages behind a projection of a securing member of the flat strip in the tilted position of the inner frame, and with a recess in this securing member in the turning or closed position.

The present inventors have determined that the constructions of multi-position wing frame assemblies of the prior art have disadvantages. From the above discussion it may be apparent that prior art fitting systems for multi-position wings are composed of a large number of cooperating parts. The majority of these parts are furthermore relatively small, have very specific complex and irregular shapes, and, in order to cooperate with each other and function smoothly, require precise positioning relative to one another and relative to the inner and outer frame of the window.

These factors may entail the assembly of such fitting system and the mounting and installation thereof into the frames thereof to be time consuming, and prone to errors and inaccuracies.

Furthermore, these require a large number of, a large variety in, and a great precision of, small parts to be fabricated and collected, so that the production process is time consuming and susceptible to errors and inaccuracies as well.

This kind of construction of the fitting system also requires the inner and outer frame to be shaped exactly fit to its parts as well, requiring precisely defined dedicated locations thereof on the frames. This shaping is generally achieved by subtractive manufacturing of the frames, e.g. milling and drilling, while the inner frame and outer frame are still unconnected, therein shaping a plurality of grooves, channels, indentations, holes and openings of different sizes and shapes, such as to fit the parts of the fitting system and have these attuned to one another after interconnection of the frames. The number and required accuracies of grooves, channels, holes and openings of various types and shapes, the precise attuning thereof relative to one another, in particular the attuning thereof between the different frames and different parts mounted thereto, therein again may render the installation process difficult and time consuming.

Lastly the complexity of the prior art fitting systems, having a large number of precisely attuned cooperating and moving parts may render the wing frame assemblies susceptible to failure and requiring high maintenance.

The object of the present invention is to overcome one or more of the abovementioned disadvantages.

The present invention aims to achieve this object by providing a multi-position wing frame assembly according to claim 1. This wing frame assembly may therein be in the form of, for example, a window frame assembly, a door frame assembly, or a hatch frame assembly. Other forms and purposes are also possible. The wing frame assembly may for example be configured to be received in a wall or a roof of a building.

Alike prior art assemblies, the wing frame assembly according the invention comprises an outer frame and an inner frame.

The outer frame is a four-sided stationary outer frame, which defines a rectangular opening and defines a plane of the wing frame assembly.

The inner frame is a four-sided pivotal inner frame, which is configured to peripherally support a wing member. This wing member may for example be a wing panel member, for example a translucent panel member, for example a window pane, so that the wing is embodied as a window.

The inner frame has a first pivot side and a second pivot side, along which the first and second pivot axis run, respectively, and has a third side and a fourth side. The third side and fourth side may be pivot sides as well, or may be non-pivot sides.

The pivotal inner frame is pivotally connected to the outer frame by hinges (50), which hinges are configured to establish a first pivot axis and a second pivot axis for the inner frame, which run along the first and second pivot side of the inner frame, respectively, such that the inner frame is pivotable over the first and second pivot axis with respect to the outer frame. For example, when the wing is a tilt-and-turn window, these may for instance be embodied as tilt hinges as commonly known, e.g. hinge plates. This will be discussed later.

The wing frame assembly further comprises a multi-mode fitting system between the outer frame and the inner frame. This fitting system is configured to allow the inner frame to be moved into, firstly, a closed position of the inner frame, wherein the rectangular opening in the outer frame is closed, and said first, second, third and fourth sides of the inner frame adjoin a first, second, third and fourth side of the outer frame, respectively. The fitting system is furthermore configured to allow the inner frame to be moved into, secondly, opened positions wherein the inner frame is pivoted about the first pivot axis relative to the outer frame. The fitting system is furthermore configured to allow the inner frame to be moved into, thirdly, opened positions wherein the inner frame is pivoted about the second pivot axis relative to the outer frame. The multi-mode fitting system comprises multiple multi-position axle members. Each multi position axle member is rotatably mounted to the inner frame, so that the multi-position axle members each extend along an associated side of the inner frame. At least one of the multi position axle members extends along one of the pivot sides.

Each multi-position axle member is rotatable about a respective rotation axis thereof that extends parallel to the associated side of the inner frame.

The multi-position axle members are interconnected by one or more respective rotary transmissions such as to be interdependently rotatable around their respective rotation axes between the multiple positions thereof.

The fitting system further comprises a selector device, e.g. a user operable selector device, operatively connected to the multi-position axle members, e.g. by means of a selector transmission, configured to transmit a translation or rotation of said selector device by a user to a rotation of the multi-position axle members around the respective rotation axes thereof, such as to cause an interdependent rotation of the multi-position axles about the respective rotation axes thereof. For example, the selector device may be a handle, preferably arranged on the inner or outer frame, wherein a handle transmission is configured to transmit a rotation or translation of the handle with respect to the inner or outer frame to said rotation of the multi-position axle members. The selector may for example also be an actuator, e.g. a motor, which is operatively connected to the multi-position axle members to cause an interdependent rotation of the multi-position axles about the associated rotation axes thereof. The action of the motor may controllable by a controller of the selector device, said controller e.g. being connected to the inner or outer frame, e.g. to a rotatable or translatable handle, to buttons, or e.g. being a remote controller.

The shape of each multi-position axle member of the fitting system and the position of each multi-position axle member with respect to the outer frame is such that the multi-position axle member is rotatable between one or more blocking positions and one or more releasing positions thereof.

In each blocking position thereof, the respective axle member extends across at least one portion of the outer frame at the associated side of the inner frame, in an opening direction thereof, when seen in a radial cross-section through the axle member and said at least one portion of the outer frame. Therein, the opening direction is away from the outer frame at the associated side of the inner frame and out of the plane of the wing frame assembly, so that the axle member engages the outer frame upon a movement of the associated side of the inner frame. Thereby, the axle member blocks the mentioned movement in the opening direction.

In each releasing position thereof, the respective axle member extends along said at least one portion, when seen in said radial cross-section in said opening direction, so as to clear the outer frame, thereby passing the outer frame at the associated side of the inner frame upon a movement of the associated side of the inner frame in the opening direction thereof. Thereby it allows for said movement in said opening direction.

The multi-mode fitting system is configured to provide multiple modes, comprising a fully locked mode, a first pivot mode, and a second pivot mode.

The fully locked mode is associated with the closed position of the inner frame. Therein at least two of the multi-position axle members each are in one of the blocking positions thereof, thereby blocking any movement of the inner frame out of the closed position.

The first pivot mode is associated with the opened positions wherein the inner frame is pivoted about the first pivot axis relative to the outer frame. In this first pivot mode each multi position axle member that extends along one of the second pivot side and the third side and fourth side, in case a multiposition axle member is provided there along, is in one of the releasing positions thereof, and each multi-position axle member extending along the first pivot side is in one of the blocking positions thereof. Thereby, the fitting system enables a pivoting movement of the inner frame out of the closed position and into opened positions thereof wherein the inner frame is pivoted about the first pivot axis relative to the outer frame.

The second pivot mode is associated with the opened positions wherein the inner frame is pivoted about the second pivot axis relative to the outer frame. In this second pivot mode each multi-position axle member extending along one of the first pivot side and the third side and fourth side is in one of the releasing positions thereof, and each multi-position axle member extending along the second pivot side is in one of the blocking positions thereof. Thereby the fitting system enables a pivoting movement of the inner frame out of the closed position and into opened positions thereof wherein the inner frame is pivoted about the second pivot axis relative to the outer frame.

Advantageously, the current wing frame assembly, and in particular the fitting system thereof, is due to its working principle based on interconnected axle members either or not releasing a specific side of the inner frame, composed of less cooperating parts than the prior art system. Furthermore, it utilizes less parts that are small or have very specific complex and irregular shapes. Furthermore, the machining of the frame parts to

accommodate the fitting system may be less complex, as the fitting system interacts with the frame parts less to establish the multi-position functionality, so that less and less complex attuning and shaping thereof is required to facilitate the working of the fitting system.

Lastly the reduced complexity of, and number of cooperating moving parts of the system may render it less susceptible to failure and result in lower maintenance requirements.

In embodiments, the one or more rotary transmissions each interconnect two multi-position axle members such that these are interdependently rotatable. Therein the one or more rotary transmissions are each embodied e.g. as a gear transmission. Therein, preferably, each of the rotary transmissions are arranged in a corner region of the inner frame between adjacent ends of two multi-position axle members. Furthermore, therein preferably the rotary transmission is a bevel gears transmission, interconnecting adjacent ends of two adjacent multi-position axles.

In embodiments, the multi-position axle members comprise at least three axle members, each extending along one of at least three respective associated sides of the inner frame.

In embodiments, the multi-position axle members comprise at least four axle members, each extending along one of the four respective associated sides of the inner frame.

In embodiments, one or more of the multi-position axle members extend along a majority of the length, preferably substantially the full length, of the inner frame at the respective side thereof.

In embodiments wherein the hinges define exactly two adjacent perpendicular pivot axes along two adjacent pivot sides of the inner frame, the hinges may be embodied as tilt hinges as commonly known, e.g. hinge plates.

Such known hinges defining two adjacent perpendicular pivot axes are known from e.g.

CN 106837032, EP1074687, EP1531226, EP0770753 and EP0478519. Furthermore,

WO2016/037862 , GB2335230, CN107091027, and EP3190251 disclose plate hinges based on plate ends sliding in slots running in parallel to the frame parts moving apart. The hinges disclosed in the latter four documents are advantageously completely integrated in the frame, and thus not visible for a user when the window is closed. EP2407621 discloses an advantageous plate hinge. However, it does not define two adjacent perpendicular pivot axes.

The hinges may however also be embodied otherwise. Especially in embodiments wherein two pivot axes run in parallel, along opposite sides of the inner frame, the hinges may be embodied as hinges other than tilt hinges.

In embodiments, e.g. with two adjacent perpendicular pivot axes and/or two opposite parallel pivot axes, the hinges, e.g. tilt hinges, are selectively disconnectable hinges. The selectively disconnectable hinges are therein e.g. mechanically, magnetically or electrically connected and disconnected from the inner or outer frame. The disconnection may e.g. be coupled to a rotation of the axles or e.g. through a displacement of the selector device, or another, e.g. dedicated part of the fitting system by which the operative hinges may be selected. To put the fitting system into a different pivot mode, dependent on the current pivot mode the hinges either dis- or reattach to the inner and/or outer frame to support the inner frame.

In an example, the invention proposes a disconnectable hinge, which comprises two mutually pivotal plates, of which one is connected to the pivotal inner frame at a pivot side thereof and one is connected to the outer frame at that pivot side. One of the plates comprises an elongate plate slot with a plate slot length along which a narrow part and a wide part spaced therefrom are provided. The plate slot adjoins a similar elongate frame slot in the frame the plate is connected to along at least the plate slot length, having substantially the same width in the longitudinal direction as the plate slot. The frame slot widens in the direction of increasing depth at both sides, forming a frame slot shoulder to a wider slot part. A sliding element, e.g. a pin or I-beam element with one or more laterally, e.g. radially, protruding shoulders at both ends is provided that extends in the depth direction of the frame through the plate slot and the frame slot, such that it can slide in the longitudinal direction thereof from the narrow part to the wide part. The shoulder(s) at one of the ends of the sliding element latch behind the frame slot shoulders to prevent movement of the sliding element out of the frame in the direction of decreasing depth. The shoulder(s) of the sliding element at the other one of its end latches over the plate slot when slid to the narrow part thereof, extending over the plate at a border section of the narrow part, such as to connect the plate to the frame. Said shoulder(s) at said end do not latch over the plate slot when slid to the wide part, such that that end of the sliding element extends within the contour of the wide part, such as to disconnect the plate from the frame. The sliding of the sliding element may be effected mechanically, e.g. by guiding a cam connected to the sliding element in a helical slot part in an axle, such that rotation thereof between a blocking and releasing position thereof is converted via the movement of the cam through the helical slot part in the axle member(s) at the associated side of the frame is converted to sliding of the sliding element between the narrow part and the wide part. The sliding may be effected by moving a magnetic field, which e.g. rotates with the axle member at the associated side, or be actuated electronically, or hydraulically, e.g. by a small cylinder.

By a similar working principle, the invention proposes a disconnectable hinge in which an arched segment rotates through an arched frame slot adjoining a plate slot of the hinge. It can rotate out of the slot to protrude out of the plate slot and latch with an end thereof behind the plate and form-lock the plate onto the frame to connect the hinge with the frame, and can rotate back until completely contained within the arched frame slot to disconnect the hinge from the frame.

Other principles for the connection and disconnection are also envisaged. The plate to be disconnected from a frame may e.g. be made of a magnetic or magnetisable material, while an adjoining electromagnet fixed to, e.g. embedded in, the frame is switched on or off by means of a switch operated by the rotation of the axle at that side between a blocking and releasing position, or by a displacement of the selector device, or by a separate user action.

Another known possibility is to integrate hinge balls as e.g. disclosed in CN2227723Y, e.g. internally in the pivotal inner frame or the outer frame, e.g. controllably movable within an internal chamber therein, e.g. moveable through mechanical or electrically actuation, e.g. through a rotation of the axles or e.g. through a displacement of the selector device, or another part of the fitting system, to put the fitting system into a different pivot mode, in pivot positions establishing a pivoting of the inner frame corresponding to the current pivot mode. For instance, it is envisaged that one or more of the axle members, e.g. the axle member at the associated pivot side, may force hinge balls in corner regions of the associated pivot side into a chamber in between the inner frame and the outer frame to form hinges pivotally supporting the inner frame.

It is also envisaged that the axle members extending at a pivot side may be shaped such as to cooperate with the outer frame to in itself form hinges at that pivot side when the fitting system is in the associated pivot mode. Therein an axle members at a pivot side may for instance have protrusions, e.g. in the form of T-shaped or mushroom-shaped members or curved claw members, latching behind matching engaging elements only in the associated pivot mode and over a range of pivot angles determined by the range of angles about the rotation axis of the axle member over which it latches behind the engaging elements, within the outer and/or inner frame, e.g. said engaging elements being provided onto the surface of the outer frame abutting the axle member in the pivot mode, e.g. in indentations therein, such that the inner frame is then via the axle member supported within the outer frame.

From the above description, the person skilled in the art will acknowledge multiple other embodiments of the hinges being possible, e.g. according to kinematic analogies of the mentioned working principles or analogous principles.

In particular, the invention provides a set of a guide hinge and a folding out hinge, together being suitable for an embodiment of the frame assembly according to the invention having exactly two pivot sides, the first pivot side and the second pivot side. Therein, the first and second pivot side are adjacent and perpendicular, such as to form a tilt-and-turn wing, e.g. a tilt-and-turn window. The set of hinges cooperates with the fitting system in a highly preferred manner. The guide hinge and folding out hinge are respectively provided at the in the two corners at the ends of the first pivot side. For example, in the case that the two adjacent pivot side are formed by an upper or lower horizontal pivot side and a right or left vertical pivot side, the guide hinge and folding out hinge may respectively be provided at the in the two corners at the ends of the right or left vertical pivot side, which then forms the first pivot side, or in the two corners at the ends of the horizontal pivot side, which then forms the first pivot side. Therein the guide hinge is provided in the corner between the first and second pivot side, and the folding out hinge in the corner at the end of one of the first pivot side, that is, the end thereof that is remote from the corner in which the folding out hinge is provided. In an example, the frame assembly has a lower horizontal pivot side and a left or right vertical pivot side, the upper and right or left sides of the frame assembly being non-pivot sides. Then the guide hinge is provided in the left or right lower corner, respectively, and the folding out hinge in the left or right upper corner, respectively.

The guide hinge is configured to guide and support pivoting both over the first and second pivot axes extending along both of the horizontal and vertical pivot side. The folding out hinge is configured to guide and support pivoting along the first pivot axis when the axle member extending there along is in one of its blocking positions. It is furthermore configured to enable the side of the inner frame opposite the second pivot side to move in the opening direction thereof, that is, away from the outer frame at the associated side of the inner frame and out of the plane of the wing frame assembly, so as to allow the inner frame to pivot over the second pivot side.

To guide and support pivoting of the inner frame over the first pivot axis, both the guide hinge and the folding out hinge are constructed very similar to the hinge of EP2407621 , employing the same working principle. The guide hinge and folding out hinge comprise an inner frame guide element, an elongate outer frame guide element, and an elongate inner and outer guide link, which are pivotally interconnected and interconnect the inner frame guide element and the outer frame guide element. The inner frame guide element and the outer frame guide element are embodied as flat elements, e.g. as plates mounted onto the inner and outer frame, respectively, or e.g. as integrated elements in casings of adjacent axle members (discussed later). The guide links are embodied as flat elongate elements, extending with flat sides on top of each other in between the guide elements, with the pivotal interconnection halfway their lengths.

The guide elements extend in parallel planes, and are respectively provided to the inner and outer frame such as to face each other when the frame assembly is in the closed position. The frame guide elements extend along opposite sides of the frame assembly. The frame guide elements of the guide hinge extend along the second pivot side, and the frame guide elements of the folding out hinge extend along the side opposed and parallel to the second pivot side.

For both the guide hinge and the folding out hinge, the outer guide link is slidably connected to the inner frame guide element, with the sliding direction parallel to the axle member at the respective side. Preferably, the inner frame guide element comprises an elongate slot, which runs parallel to the axle member, while the outer guide link comprises at a sliding end thereof a pin, configured to slide back and forth inside the slot. At a pivoting end thereof, the outer guide link is pivotally connected to the outer guide element. The inner guide link is at a sliding end slidably connected to the outer guide element, e.g. by means of a similar slot-pin configuration, and at a pivoting end pivotally connected to the inner guide element. The sliding direction is again parallel to the axle member at the respective side, that is, when the frame assembly is in the closed position.

During pivoting over the first pivot axis to move the inner frame from the closed position into an opened position, the sliding action of the sliding ends of the guide links with respect to the guide elements, and the simultaneous mutual pivoting of the guide links, which therein move away from a mutually aligned position, alike a scissors that opens, establishes the guiding and supporting of the pivoting movement. In particular, the dimensioning, relative positioning and mutual attuning of the pivot points and sliding trajectories is such as to allow pivoting between the closed and opened positions, for example over an annular range of

approximately 90°.

The skilled person will acknowledge from the above description that multiple mechanically analogous solutions and kinematic inversions from the above arrangement are possible to provide a similar functionality. For example, the inner and outer guide link may be

interchanged. A link may comprise a slot and the guide element a pin to accomplish the slidable connection, or the other way around.

To guide and support pivoting of the inner frame over the second pivot axis, the guide hinge and folding out hinge comprise a number of features in addition to the hinge of EP2407621 , which does not provide this functionality.

Firstly, in the guide hinge, the pivoting connection between the pivoting end of the outer guide link and the inner guide element is embodied as a combination of an inwards protrusion of the outer guide link, and a corresponding indentation of the inner guide element which encloses the protrusion, such that it pivots within the indentation around a pivot point. The protrusion and indentation are at least mutually pivotable over an angular range within planes perpendicular to the first pivot axis, corresponding to the range of opening positions allowed when pivoting over the first pivot axis, e.g. 90°. Furthermore, the protrusion and indentation are also in planes perpendicular to the second axis at least partially circular, and mutually pivotable over an angular range corresponding to the range of opening positions allowed when pivoting over the second pivot axis, e.g. between 5-45°. The protrusion is to that end e.g. being shaped like a ball, a pin with a rounded head, or a light-bulb, and the indentation e.g. as an adjoining bowl-shaped hole, e.g. such as to form a ball-and-socket joint. At the same time, a spacing between the outer guide link and the outer guide element is such as to allow for the pivoting of the inner frame around the second pivot axis as well.

Secondly, in the folding out hinge, the connection of the pivoting end of the inner guide link with the inner frame guide element is embodied as a combination of an inwards protrusion of the inner guide link, and a corresponding indentation of the inner guide element inside which the protrusion pivots, in a way similar to the combination in the guide hinge. However, in the folding out hinge, the connection only allows pivoting around the first pivot axis when the fitting system is in the first pivot mode, and allows the protrusion to slide within and out of the indentation in the direction opposed to the opening direction of the side opposed to the first pivot side, when pivoting around the second pivot axis in the second pivot mode of the fitting system. To that end, the indentation is formed as an elongate slot, extending from the pivot point in a direction substantially opposed to the opening direction of the inner frame when pivoting around the second pivot axis. When the fitting system is in the first pivot mode, a pin is positioned in the indentation behind the protrusion, such as to form-lock the protrusion at the pivot point, thereby preventing it to move inside the indentation in the direction substantially opposing the opening direction. The pin cooperates with the fitting system, e.g. one of the nearest axle members, such that it is moved inside the indentation when the fitting system is in the first pivot mode, and out of the indentation when the fitting system is in the second pivot mode. In particular, the pin is connected or fixed to the end of the axle member at the side opposed to the second pivot side that is adjacent to the first pivot side, e.g. to the rotary transmission, e.g. a bevel gear, thereof, such that rotation of the axle member in or out the position thereof corresponding first pivot mode makes the pin move, e.g. rotate or slide, into and out of the indentation, respectively.

In this manner, the inner and outer guide link advantageously together function as a tilt opening stay when the fitting system is in the second pivot mode.

In embodiments the fitting system comprises at least one, e.g. one, drive axle member that extends along one of the sides of the inner frame and that is rotatable about a respective rotation axis parallel to this one of the sides into positions corresponding with the multiple modes of the fitting system. Therein, the drive axle member is connected to the multi-position axle members via respective rotary transmissions, and the selector device is operatively connected to the drive axle. For example, the selector device is a handle being operatively connected to the drive axle member such as to convert a displacement of the handle between respective multiple positions thereof into an interdependent rotation of the drive axle member and the multi-position axle members about the respective rotation axes thereof.

In embodiments, the at least one drive axle member along said one side of the inner frame is preferably connected via two rotary transmissions to two of the multi-position axle members that extend along opposed sides of the inner frame. Furthermore, therein the at least one drive axle member is preferably embodied as a multi-position axle member of the fitting system. The at least one drive axle member is preferably associated with one of the non pivot sides of the inner frame, but may alternatively also be associated with one of the pivot sides thereof.

According to the invention, there are numerous possibilities for the number of pivot axes for the inner frame, and along which sides of the inner frame these run. Embodiments with for instance two, three, or four pivot axes are envisaged.

In embodiments, the hinges define exactly two pivot sides for the window, namely the first pivot side and the second pivot side. The first third side and fourth side of the inner frame are non-pivot sides. In these embodiments, each multi-position axle member associated with one of the non-pivot sides of the inner frame is, if present, a two-way axle member, which has two releasing positions in the two respective pivot modes, and one blocking position in the fully locked mode.

In these embodiments, each multi-position axle member associated with one of the pivot sides of the inner frame is, if present, a one-way axle member. Of these, the one-way axle member associated with the first pivot side has one blocking position in the first pivot mode, one releasing position in the second pivot mode, and one blocking position in the fully locked mode. The one-way axle member associated with the second pivot side has one releasing position in the first pivot mode, one blocking position in the second pivot mode, and one blocking position in the fully locked mode.

In embodiments, the first and the second pivot sides may be adjacent to one another, so that the wing frame assembly is a tilt-and-turn wing frame assembly. Therein, the wing panel member may for instance be a window, so that the wing frame assembly is a tilt-and-turn window. Therein the inner frame may e.g. be pivotally connected to the outer frame by means of tilt hinges, e.g. tilt hinge plates, e.g. two tilt hinge plates, for example at the first pivot side only.

Alternatively, the first and the second pivot sides may be opposite one another. The wing frame assembly is then for instance tiltable in upwards and downwards, or sideways turnable in two opposite directions.

In other embodiments, the hinges determine three pivot axes for the inner frame, namely the first pivot axis along the first pivot side, the second pivot axis along the second pivot side, and furthermore a third pivot axis along the third side of the inner frame, so that the third side of the inner frame is a third pivot side. The fourth side of the inner frame is therein a non pivot side.

In these embodiments the modes of the fitting system further comprise a third pivot mode, which is associated with opened positions wherein the inner frame is pivoted about the third pivot axis relative to the outer frame. In these opened positions each multi-position axle member extending along one of the first pivot side and the second pivot side and fourth side is in one of the releasing positions thereof. Each multi-position axle extending along the third pivot side is in one of the blocking positions thereof. The effect is that the fitting system enables a pivoting movement of said inner frame out of the closed position and into opened positions thereof wherein the inner frame is pivoted about the third pivot axis relative to the outer frame. In these embodiments, each multi-position axle member associated with the non-pivot side of the inner frame is a three-way axle member, which has three releasing positions in the three respective pivot modes, and one blocking position in the fully locked mode,

Furthermore, in these embodiments at least two of the multi-position axle members are associated with one of the pivot sides of the inner frame and are each a two-way axle member. Of these two-way axle members, the two-way axle member associated with the first pivot side has one blocking position in the first pivot mode, one releasing position in the second pivot mode, one releasing position in the third pivot mode, and one blocking position in the fully locked mode.

In these embodiments, the two-way axle member associated with the second pivot side has one releasing position in the first pivot mode, one blocking position in the second pivot mode, one releasing position in the third pivot mode, and one blocking position in the fully locked mode.

In these embodiments, the two-way axle member associated with the third pivot side has one releasing position in the first pivot mode, one releasing position in the second pivot mode, one blocking position in the third pivot mode, and one blocking position in the fully locked mode.

In other embodiments, the hinges determine the first and second pivot axis along the first and second pivot side of the inner frame, and furthermore a third pivot axis and a fourth pivot axis of the inner frame along the third side and the fourth side of the inner frame. This makes that the third side and fourth side of the inner frame are third and fourth pivot sides.

In these embodiments, the modes of the fitting system further comprise a third pivot mode associated with opened positions wherein the inner frame is pivoted about the third pivot axis relative to the outer frame. In these opened positions each multi-position axle member extending along one of the first, the second and the fourth pivot side is in one of the releasing positions thereof, and each multi-position axle member extending along the third pivot side is in one of the blocking positions thereof. The effect is that the fitting system enables a pivoting movement of said inner frame out of the closed position and into opened positions thereof wherein the inner frame is pivoted about the third pivot axis relative to the outer frame.

The modes of the fitting system in these embodiments also comprise a fourth pivot mode associated with opened positions wherein the inner frame is pivoted about the fourth pivot axis relative to the outer frame. In these opened positions each multi-position axle member extending along one of the first, the second, and the third pivot side is in one of the releasing positions thereof, and each multi-position axle extending along the fourth pivot side is in one of the blocking positions thereof. In effect the fitting system thus enables a pivoting movement of said inner frame out of the closed position and into opened positions thereof wherein the inner frame is pivoted about the fourth pivot axis relative to the outer frame.

In these embodiments each multi-position axle member is a three-way axle member, which has three releasing positions in the four respective pivot modes not associated with the pivot side of the inner frame associated with the multi-position axle member, and one blocking position in the fully locked mode.

In these embodiments, each multi-position axle member associated with one of the pivot sides of the inner frame is, if present, a three-way axle member. Of these three-way axle members, the three-way axle member associated with the first pivot side has one blocking position in the first pivot mode, one releasing position in the second pivot mode, one releasing position in the third pivot mode, one releasing position in the fourth pivot mode, and one blocking position in the fully locked mode.

In these embodiments the three-way axle member associated with the second pivot side has one releasing position in the first pivot mode, one blocking position in the second pivot mode, one releasing position in the third pivot mode, one releasing position in the fourth pivot mode, and one blocking position in the fully locked mode.

In these embodiments the three-way axle member associated with the third pivot side has one releasing position in the first pivot mode, one releasing position in the second pivot mode, one blocking position in the third pivot mode, one releasing position in the fourth pivot mode, and one blocking position in the fully locked mode.

Lastly, in these embodiments the three-way axle member associated with the fourth pivot side has one releasing position in the first pivot mode, one releasing position in the second pivot mode, one releasing position in the third pivot mode, one blocking position in the fourth pivot mode, and one blocking position in the fully locked mode.

In embodiments, one or more aligner corner elements are provided to the fitting system. This aligner corner element has two fixedly interconnected perpendicular pins extending along respective rotational axes of two adjacent axle members in a corner of the fitting system, and is rotatably connected to the axle members such that the axle members each rotate around said pins. Thereby, said aligner corner element maintains a relative positioning of adjacent axle members interconnected by a rotary transmission. Therein, for example, the pins extend inside a bore of interconnected gears, e.g. the bevel gears, of the rotary transmission.

To establish the blocking- and releasing functionality of the axles upon rotation thereof into respective blocking- and releasing positions, the axles, inner frame and outer frame are adapted and attuned to each other, such that these cooperatively achieve this functionality.

In embodiments, thereto each multi-position axle member present comprises, e.g. is provided with or forms, one or more locking portions that are located between the inner frame and the outer frame in the closed position of the inner frame.

In these embodiments each of the locking portions is rotationally non-symmetric with respect to the rotation axis of the respective multi-position axle member, and in the closed position of the inner frame, a respective shoulder of the outer frame extends axially along the locking portions at a side of the multi-position axle member in the respective opening direction of the associated side of the inner frame.

In these embodiments the locking portions and shoulder are such that each locking portion in each blocking position of the multi-position axle thereof extends at least partially outwards from the contour of the shoulder extending there along, and in the releasing position(s) of the multi-position axle extends completely inwards from the contour of this shoulder. Therein the directions‘outwards’ and‘inwards’ respectively correspond to directions towards the wing member supported by the inner frame and perpendicular to the opening direction at the respective side of the inner frame that is associated with the multi-position axle.

The effect of this feature is that each multi-position axle member present in each blocking position thereof engages the outer frame by the locking portion(s) thereof at the respective shoulder(s) extending there along upon movement of the associated side of the inner frame in the opening direction thereof, such as to block this movement.

In these embodiments, preferably, axially along each respective locking portion at a side of the multi-position axle member comprising the locking portion in the respective opening direction thereof, a respective shoulder of the inner frame extends such that in each releasing position of the multi-position axle each locking portion comprised thereby extends completely inwards from the outer contour of the respective shoulder extending there along. In these embodiments, preferably in the closed position of the inner frame each shoulder of the inner frame abuts the shoulder of the outer frame extending along the same respective locking portion such that the radially inward surfaces thereof, with respect to the rotation axis of the multi-position axle member comprising the locking portion it extends along, are substantially flush at the junction.

Furthermore, in these embodiments preferably each shoulder of the outer frame, at the radially inwards side thereof with respect to the rotation axis of the multi-position axle comprising the locking portion it extends along, delimits an indentation in the outer frame, so that the locking portion the respective shoulder extends along extends within the indentation in each blocking position thereof.

Furthermore, preferably, in these embodiments each of the shoulders of the inner frame at the radially inwards side thereof, with respect to the rotation axis of the multi-position axle comprising the locking portion it extends along, delimits an indentation in the inner frame, so that the locking portion extends within the indentation in each releasing position thereof.

In these embodiments, in the closed position of the inner frame, preferably the indentations of the inner frame each together with the indentations of the outer frame extending along the same respective locking portion define an internal locking chamber for the locking portion that radially encloses the locking portion such that it is rotatable within the chamber by the rotation of the multi-position axle member it is comprised by between the multiple positions of the axle member.

In these embodiments, in the closed position of the inner frame, the radially inward surfaces of the indentation of the inner and outer frame defining each internal locking chamber are most preferably substantially flush at the junctions thereof, such as to together form a substantially continuous inner wall of the internal locking chamber.

In a preferred embodiment the circumference of each locking portion has a curved face part which forms a part of a circle, and, corresponding to the number of releasing positions of the multi-position axle it is comprised by, has one or more flat face parts within the contour of this circle. Therein each flat face part extends along the opening direction of the multi-position axle member and completely inwards from the contour of the shoulder in each releasing position of the multi-position axle member. Each curved face part therein extends at least partially outwards from the contour of the shoulder in each blocking position of the multi position axle member. In embodiments, a rotation of 90° of each of the axle members of the fitting system around their rotation axes corresponds to a rotation between a fully locked mode and one of the pivot modes, and between pivot modes. This may in particular be the case if the fitting system has two or three pivot modes.

In embodiments, the rotations of the axle members are transmitted via rotation

transmissions, e.g. one-on-one, so that interconnecting gears, e.g. bevel gears, may all be correspondingly shaped and sized.

In embodiments, alike the current conventional systems, the selector device is in the form of a handle of which a rotation of 90° results in the fitting system rotating between the fully locked mode and one of the pivot modes, or between the pivot modes. Therein the handle transmission converting a rotation of the handle into a rotation of the drive axle member, may be one-on-one, so that a 90° rotation of the handle results in a 90° rotation of the drive axle member to switch between modes of the fitting system.

For example, in case of a tilt-and-turn wing frame assembly, which thus has two adjacent pivot sides, according to the convention a 90° rotation of the handle from a vertically downward position into a horizontal position would rotate the fitting system from the fully locked mode to the pivot mode thereof associated with a pivot axis along a horizontal side of the inner frame, e.g. the lower horizontal side of the inner frame. A 90° rotation of the handle from this horizontal position into a vertically upward position would rotate the fitting system from the pivot mode thereof associated with the pivot axis along the lower horizontal side, to the pivot mode associated with a pivot axis along one of the vertical sides of the inner frame.

In a preferred embodiment, in the closed position, each internal locking chamber is substantially circular in diameter along the axial extension thereof, e.g. is cylindrical or (frusto-)conical, and the curved face part of the circumference of the locking portions is of a complementary shape such as to snugly fit to the inner wall of the internal locking chamber in the multiple positions of the multi-position axle member it is comprised by.

In these embodiments, the one or more locking portions of each multi-position axle may be one single locking portion axially extending along substantially the entire length thereof. Alternatively however, these may also be multiple locking portions, which are axially spaced from one another, wherein in between the multiple locking portions, the multi-position axles may for instance have a diameter that is at least two times smaller than the diameter of the locking portions. In these embodiments one or more of the locking portions of each multi-position axle is for example directly connected to, or merges into, one or more of the rotary transmissions interconnecting the multi-position axle and one or more adjacent multi-position axles.

In these embodiments each locking portion is at axially outward ends for example directly connected to, or merges into, two rotation transmissions interconnecting the multi-position axle it is comprised by and adjacent multi-position axles at both respective axial ends of the locking portion.

In embodiments with multiple locking portions per multi-position axle member, two locking portions of each multi-position axle member may be at an axially outward end thereof directly connected to, or merge into, two rotary transmissions interconnecting the multi-position axle members and adjacent multi-position axle members.

In preferred embodiments, one or more locking portions of the axle members are formed by radially inward indentations of the axle member, extending over an angular range of the axle which corresponds to the rotation thereof around the respective rotation axes thereof between one blocking position and one or more releasing positions thereof. A blocking protrusion of the outer frame, e.g. a pin or a block, extends radially inwardly within the contour of the indentation in both the blocking position and the releasing positions. Each indentation extends between two radially extending surfaces. In the blocking position of the axle member, one of these surfaces extends across said blocking protrusion of the outer frame in an opening direction of the inner frame, when seen in a radial cross-section through the axle member, the indentation and the blocking protrusion, such that it tangentially engages the blocking protrusion of the outer frame upon a movement of the associated side of the inner frame, thereby blocking said movement in said opening direction. In the releasing position(s), said radial surface extends along the blocking protrusion, when seen in said radial cross-section in said opening direction, so as to clear the blocking protrusion of the outer frame, thereby passing the outer frame at the associated side of the inner frame upon a movement of the associated side of the inner frame in said opening direction thereof, allowing for the movement of the inner frame in the opening direction.

In embodiments, the blocking protrusions may for example be integral parts of the outer frame, or may for example be mounted to sides thereof. In a particular embodiment, each blocking protrusion is a head part of a separate blocking element, which has a connection part as a longitudinal prolongation thereof. The connection part is configured to be inserted into one of the sides of the outer frame, e.g. in a bore thereof, such as to be secured thereto, and may thereto e.g. be provided with screw thread, or be in the form of a clamping plug. After insertion the head part protrudes from the outer frame to form the blocking protrusion. The head part may e.g. be cylindrically shaped, and preferably has protrusions or engagement surfaces which are configured to be manually gripped or engaged by a tool in order to insert, e.g. screw or push, the blocking element into the associated side of the outer frame. In an embodiment, the head part is slightly eccentric from the connection part.

In an embodiment, at least two blocking protrusions and radial indentations of the axle member are provided for each axle member at each side, that is, at least each pivot side and optionally also at each non-pivot side, if present. These are spaced from each other in the longitudinal direction of the axle member, e.g. provided near the ends thereof. In an embodiment, exactly two are provided per axle member at each pivot side. Longer sides of the frames may advantageously be provided with more blocking protrusions and

indentations, e.g. longitudinally, one near the ends and one substantially in the center of the axle member.

In a preferred embodiment, the inner frame comprises a rectangular or square framework out of four individual beams, and embedded case elements, e.g. tube-shaped, which rotatably support the axle members along the sides, the axle members rotating inside the case elements. The case elements are provided at an outer surface of the beams within an inwardly directed cutback along the side, e.g. a step or elongate groove, so that the casings and the supported axle members extend within the outer contour of the inner frame.

Preferably, multiple casings are provided for each axle member, e.g. at each end thereof, of which casings supporting adjacent axle members are preferably formed as corner pieces of adjoined perpendicular parts. In the case that the radial indentations of the axle member extends inside the casing, the casing is provided with a corresponding opening, extending over the same angular range.

In prior art systems, a commonly encountered problem with in particular a handle-operated tilt-and-turn window, is that when a user, for instance accidentally or unintentionally, operates the handle while the window is opened to switch to another pivot mode, this brings the window practically in a tilting and turning mode at the same time. In practice means that the, mostly heavy, inner frame with the window pane is disconnected from the outer frame or connected only at one corner - mostly a lowermost corner. This may lead to unsafe situations, in which the inner frame with the window pane is not properly supported anymore by the outer frame, so that the user suddenly has to catch and carry the weight thereof to prevent the window from falling. Only after the user positions the inner frame with the window pane back to one of the intended positions, so a tilt, turn, or closed position, the user is able to correct his mistake.

To prevent these situations, according to the invention the selector device is optionally provided with an open-and-lock system, which is configured to block a rotation of the handle axle in opened positions and the ventilation position, if provided, of the inner frame. This ventilation position is discussed later.

Envisaged embodiments of this open-and-lock system comprise a pressable element, e.g. a spring, which is pressed against the outer frame in the closed position of the inner frame.

This pressing of the spring in turn releases a catch element from blocking a displacement of the fitting system into other modes thereof. Moving the inner frame out of the closed position releases the pressable element from being pressed against the outer frame, which causes the catch element to block a displacement of the fitting system into other modes thereof. Thereby, the open-and-lock system counteracts an unintended operation of the fitting system via the selector device.

Preferably, the catch element of the open-and-lock system allows the catch element to block the fitting system only when in the discussed modes thereof when it is released from being pressed against the outer frame. Therein it blocks the fitting system to be displaced out of these modes. While the pressable element is pressed, the fitting system is cleared such as to be freely displaceable between modes, via the selector device.

In a particular embodiment, the catch element is a pin fixedly connected to the pressable element, and the open-and-lock system comprises an indented disc that is fixedly connected to the drive axle, e.g. in line therewith, such as to rotate along with the drive axle. The indented disc has indentations which each correspond to a mode of the fitting system.

Rotating the drive axle - via the selector device - such as to displace the fitting system into a different mode of the fitting system while the pressable element is pressed, aligns the pin with the respective indentation of this latter mode. The indentations are configured to receive the pin when the pressable element is consequently released from being pressed against the outer frame - that is, when pivoting the inner frame into an opened position - or the ventilation position, if provided - such that the pin blocks the indented disc, and thereby the drive axle, from rotating about its rotation axis. When now the pressable element is pressed again against the outer frame, the pressable element pushes the pin out of the indentation again, so that the drive axle may be rotated via the selector device again to choose another mode of the fitting system again. In wing frame assemblies with one or more substantially horizontally extending pivot axes, such as to enable upwards or downwards tilting of the inner frame, an opening stay may be provided at the respective pivot sides to counteract the effects of gravity. After all, in case of upwards tilting, gravity creates a tendency for the inner frame to return back to the closed position, and in case of downwards tilting, a tendency to tilt even further away from the closed position.

In embodiments an opening stay is provided at the opposite side of one of the pivot side of the inner frame, which opening stay interconnects the outer and inner frame such as to restrict the pivoting movement around one of the pivot axes, e.g. a tilting movement along the pivot axis extending horizontally along the lowest one of the sides of the inner frame, up to a predetermined angle, e.g. a predetermined tilting angle, e.g. of around 5°.

This opening stay is particularly relevant to apply in wing frame assemblies that are relatively heavy and/or large, e.g. in windows with a diagonal of more than 70cm. In other

embodiments, tilting angles may be restricted for instance by means of a restriction in the hinges, or adjusting the shape of the inner and outer frame e.g. at the respective pivot side to engage one another such as to block a further movement, while supporting the inner frame in this position. In case the size and/or weight of the wing frame assembly is such as to benefit therefrom, multiple opening stays may be provided, e.g. at the same side of the inner frame, e.g. near both of its corners.

In a particular embodiment, the opening stay is provided to the axle member extending at the side opposite to the pivot side, e.g. near an end thereof. Therein the stay comprises a strip, which is at one outward end rotatably mounted to the axle member. The strip has on one end thereof, e.g. an axially inward end thereof, a mushroom-shaped element protruding radially outwardly therefrom, and is at another end thereof, e.g. an outward end thereof, mounted to the axle member, such that the strip is rotatable with respect to the axle member between an aligned position, with its length direction extending parallel to the rotation axis and a slewed position, with its length direction extending at an angle with the rotation axis. When pivoting the inner frame over the second pivot axis, the mushroom-shaped element slides in an axial direction within a slide element, e.g. a C-shaped slide element which is fixed to the outer frame while the strip rotates.

At the predetermined tilting angle, the mushroom-shaped element engages the slide element such that it is blocked from moving further outwardly, and consequently that the inner frame is blocked from tilting further away from the outer frame. The mushroom-shaped element is therein configured to rotate along with the axle member within the locking chamber in the aligned position of the strip. Only when the fitting system is in the respective pivot mode to be restricted, wherein the opposite axle member is in the releasing position, the mushroom-shaped element is radially directed towards the sliding element. Therein e.g. this end is slanted such that the mushroom-shaped element is able to be rotated along with axle member to be aligned with the sliding direction without being hindered, while being forced to slide into the sliding element upon tilting the inner frame.

In embodiments, the fitting system is furthermore configured to allow the inner frame to also be moved into a ventilation mode thereof wherein the inner frame is pivoted about one of the pivot axes relative to the outer frame. Therein the multiple modes of the fitting system further comprises a ventilation mode associated with the ventilation position which mode is in the middle between the first pivot position and the fully locked position and each multi-position axle member extending along one of the sides not associated with the one of the pivot axes is in between releasing positions thereof, or in between one of its releasing positions and one of its blocking positions thereof, and each multi-position axle member extending along the side associated with the one of the pivot axes is in one of the blocking positions thereof. Thereby, the fitting system enables a small pivoting movement of said inner frame out of the closed position and into the ventilation position thereof, wherein the inner frame is pivoted about the one of the pivot axes relative to the outer frame over a distance smaller than half the diameter of the respective locking chamber. In this ventilation position the axle member engages the inner and outer frame such as to block further pivoting movement of the inner frame away from the outer frame.

Pivoting the inner frame from its closed position into its ventilation position creates a small chink in between the inner and outer frame, extending along the second, third and fourth side of the inner frame. This chink allows air to pass through the locking chambers at the first, third and fourth side of the inner frame from one side of the plane of the wing frame assembly to the other side, thereby providing a ventilation function.

For example, in embodiments wherein the selector device is in the form of a handle of which a rotation of 90° results in the fitting system rotating between the fully locked mode and one of the pivot modes, or between the pivot modes, a 45° rotation thereof from the fully locked position and/or from one of the pivot modes would rotate the fitting system into the ventilation mode. Other positions are also possible, for instance a 90° rotation. In embodiments wherein releasing and blocking positions correspond to flat and curved face parts of locking portions thereof being either or not aligned with a shoulder of the outer frame, as discussed before, axle members at the sides not corresponding to the side over which is pivoted in this mode, may for example have a flat face part at a 45° angle with respect to the plane of the wing frame assembly. Therein these axle members would be in between a blocking and releasing position thereof, or alternatively in between releasing positions, so that the fitting system would be in between pivot modes or between a pivot mode and the fully locked mode. The flat face surface being oriented in this way would create at each respective shoulder extending there along a small free space within the locking chamber in the opening direction of the respective side, so to allow these sides of the inner frame to be moved away from the outer frame through this free space by a very small amount, until the axle member engages both frames again to block further movement. The axle member thus does not completely pass the shoulder of the outer frame, but latches behind it by the flat surface. Therein the axle member at the side over which is pivoted, is in between two blocking positions, and has its curved face part still running along the shoulder of the outer frame, so that this axle does block any movement away from the outer frame at the associated side.

Alternatively, instead of using a flat face surface associated with a releasing position of an axle to latch behind the shoulder, a slanted surface may be provided to the axle member especially dedicated to the ventilation position.

The invention further relates to a fitting system for a multi-position wing according to the invention.

The invention further relates to an open-and-lock system for a multi-position wing according to any of the preceding claims.

The invention further relates to a wing frame assembly, comprising a stationary outer frame, and a pivotal inner frame. Therein the outer frame defines an opening, e.g. a circular opening, a triangular opening or an opening shaped as another polygon, and defines a plane of the wing frame assembly. The inner frame is configured to peripherally support a wing member, and is pivotally connected to the outer frame by hinges, which hinges are configured to determine one or more pivot axes for the inner frame. The inner frame has one or more pivot sides along which the respective pivot axes run, and optionally one or more non-pivot sides. Herein the wing frame assembly comprises a multi-mode fitting system between the outer frame and the inner frame, said fitting system being configured to allow the inner frame to be moved into a closed position thereof, wherein the opening in the outer frame is closed, and opened positions thereof, wherein the inner frame is pivoted about one of the pivot axes relative to the outer frame.

Herein the multi-mode fitting system comprises one or more multi-position axle members, each multi-position axle member therein being rotatable mounted to the inner frame, or the outer frame, so that the multi-position axle members each extend along an associated side of the inner frame. At least one of the multi-position axle members therein extends along one of the pivot sides.

Herein each multi-position axle member is rotatable about a respective rotation axis thereof that extends along to the associated side of the inner frame.

The axle members may be mounted to the associated side inner, or outer, frame such that these radially extend, e.g. partially, within a channel of the frame, e.g. an internal hollow space or a groove within the outer surface. The axle members may also rotate within support elements mounted to the outer surface of the associated sides of the frame, which are e.g. spaced from each other along the length of each axle member. In an example, a hollow corner support element is mounted in each corner of two adjacent sides along which axle members extend. The corner element therein has perpendicular adjoining hollow parts, the rotation transmission of the adjoining axle members extending within the corner support element.

When multiple multi-position axles are present, the one or more multi-position axle members may be interconnected, e.g. in corner regions of the inner frame, in case it has multiple sides, such as to be interdependently rotatable between the multiple positions thereof. A multi position axle may, e.g. alternatively, be flexible, e.g. such as to be rotatable over corners and/or bends without interconnections.

The fitting system further comprises a selector device operatively connected to the multi position axle members at least in the closed position of the inner frame, to cause an interdependent rotation of the multi-position axle(s) about the associated rotation axes thereof. For instance, the selector device may be fixedly connected to the outer frame in case the axle member(s) is/are mounted to the outer frame, and may be fixedly connected to the outer frame in case the axle member(s) is/are mounted to the inner frame. Each multi-position axle member is rotatable between one or more blocking positions and one or more opened positions.

When the axle member(s) is/are mounted to the inner frame, in each blocking position the axle member overlaps with at least one portion of the outer frame at the associated side of the inner frame so as to engage the outer frame upon a movement of the associated side of the inner frame in an opening direction thereof, which opening direction is away from the outer frame at the associated side of the wing member and out of the plane of the wing frame assembly, said overlap thereby blocking said movement in said opening direction.

In each releasing position the axle member clears the outer frame so as to pass the outer frame at the associated side of the inner frame upon a movement of the associated side of the inner frame in said opening direction thereof, such as to allow for said movement in said opening direction.

When the axle member(s) is/are mounted to the outer frame, in each blocking position the axle member overlaps with at least one portion, e.g. a shoulder, of the inner frame at the associated side of the inner frame so that the shoulder engages the axle member upon a movement of the associated side of the inner frame in an opening direction thereof, which opening direction is away from the outer frame at the associated side of the wing member and out of the plane of the wing frame assembly, said overlap thereby blocking said movement in said opening direction.

In each releasing position thereof, the axle member clears the inner frame so as to pass the outer frame at the associated side of the inner frame upon a movement of the associated side of the inner frame in said opening direction thereof, such as to allow for said movement in said opening direction.

The multi-mode fitting system is configured to provide multiple modes. These modes comprise a fully locked mode and one or more pivot modes, e.g. two, three, four, and/or as many pivot modes as there are sides of the inner frame.

The fully locked mode is associated with the closed position of the inner frame, wherein at least two of the multi-position axle members each are in one of the blocking positions thereof, thereby blocking any movement of the inner frame out of the closed position. Each pivot mode is associated with the opened positions wherein the inner frame is pivoted about a respective one of the pivot axes relative to the outer frame. In each pivot mode, each multi-position axle member extending along one of sides not associated with the respective pivot axis, if present, is in one of the releasing positions thereof, and each multi-position axle member extending along the respective pivot side is in one of the blocking positions thereof. Thereby the fitting system enables a pivoting movement of said inner frame out of the closed position and into opened positions thereof wherein the inner frame is pivoted about the respective pivot axis relative to the outer frame.

It is noted that features previously discussed in relation to different embodiments, e.g. with a different number of sides and/or pivot axes, and/or the fitting system being mounted to a different frame part, may correspondingly be applied to the last described wing frame assembly as well, therein taking into account the inevitable and obvious measures to adjust the feature to the difference.

For example, the shape of axle members provided to an embodiment wherein the fitting system is mounted to the outer frame, curved and flat face parts thereof are in releasing and blocking positions such that portions of the inner frame are passing and engaging the axle member, instead of the axle member engaging the outer frame, upon moving the respective side of the inner frame in the opening direction thereof.

In another example, where rotations adjacent axle members are not perpendicularly transmitted but at a different relative angle, e.g. when there are three, or five sides to the inner frame, the pins of aligner elements are at a corresponding relative angle instead of perpendicular.

The present invention also relates to a multi-position wing frame assembly, for example a window frame assembly, a door frame assembly, or a hatch frame assembly, for example configured to be received in a wall or a roof of a building, the wing frame assembly comprising:

- a four-sided stationary outer frame, wherein the outer frame defines a rectangular opening and defines a plane of the wing frame assembly,

- a four-sided pivotal inner frame,

wherein the inner frame is configured to peripherally support a wing member, for example a wing panel member, for example a translucent panel member, for example a window pane, wherein the pivotal inner frame is pivotally connected to the outer frame by hinges, which hinges are configured to determine a first pivot axis and a second pivot axis for the inner frame,

wherein the inner frame has a first pivot side and a second pivot side, along which the first and second pivot axis runs, respectively, as well as a third side and a fourth side,

- a multi-mode fitting system between the outer frame and the inner frame, said fitting system being configured to allow the inner frame to be moved into:

- a closed position hereof, wherein the rectangular opening in the outer frame is closed,

- opened positions thereof, wherein the inner frame is pivoted about the first pivot axis relative to the outer frame,

- opened positions thereof, wherein the inner frame is pivoted about the second pivot axis relative to the outer frame,

the multi-mode fitting system comprising:

- multiple multi-position axle members, each multi-position axle member being rotatable mounted to the inner frame, so that the multi-position axle members each extend along an associated side of the inner frame, at least one of the multi-position axle members extending along one of the pivot sides,

wherein each multi-position axle member is rotatable about a respective rotation axis thereof that extends parallel to the associated side of the inner frame,

the multi-position axle members being interconnected such as to be interdependently rotatable between multiple positions thereof,

- a selector device operatively connected to the multi-position axle members to cause an interdependent rotation of the multi-position axles about the associated rotation axes thereof, for example a handle operatively connected to the multi-position axle members via a handle transmission configured to convert a displacement of the handle into an interdependent rotation of the multi-position axles about the associated rotation axes thereof,

wherein each multi-position axle member is rotatable between:

- one or more blocking positions, in which the axle member overlaps with at least one portion of the outer frame at the associated side of the inner frame so as to engage the outer frame upon a movement of the associated side of the inner frame in an opening direction thereof, which opening direction is away from the outer frame at the associated side of the wing member and out of the plane of the wing frame assembly, said overlap thereby blocking said movement in said opening direction,

- one or more releasing positions, in which the axle member clears the outer frame so as to pass the outer frame at the associated side of the inner frame upon a movement of the associated side of the inner frame in said opening direction thereof, such as to allow for said movement in said opening direction, wherein the multi-mode fitting system is configured to provide multiple modes, said modes comprising:

a fully locked mode associated with the closed position of the inner frame, wherein at least two of the multi-position axle members each are in one of the blocking positions thereof, thereby blocking any movement of the inner frame out of the closed position,

a first pivot mode associated with the opened positions herein the inner frame is pivoted about the first pivot axis relative to the outer frame, in which first pivot mode each multi-position axle member extending along one of the second pivot side and the third side and fourth side, if present, is in one of the releasing positions thereof, and each multi-position axle member extending along the first pivot side is in one of the blocking positions thereof, whereby the fitting system enables a pivoting movement of said inner frame out of the closed position and into opened positions thereof wherein the inner frame is pivoted about the first pivot axis relative to the outer frame, and

a second pivot mode associated with the opened positions wherein the inner frame is pivoted about the second pivot axis relative to the outer frame, in which second pivot mode each multi-position axle member extending along one of the first pivot side and the third side and fourth side is in one of the releasing positions thereof, and each multi-position axle member extending along the second pivot side is in one of the blocking positions thereof, whereby the fitting system enables a pivoting movement of said inner frame out of the closed position and into opened positions thereof wherein the inner frame is pivoted about the second pivot axis relative to the outer frame. The multi-position wing frame assembly may have any of the features discussed in the subclaims of this application and/or in the description with reference to the assembly of claim 1.

The invention will now be described with reference to the appended drawings. In the drawings: fig. 1a shows a front view of a wing frame assembly according to the invention, and two cross-sectional views thereof along indicated sections A-A and B-B, with the fitting system of the assembly in the fully locked mode thereof,

fig. 1b shows an exploded perspective view of a fitting system according to the invention in the fully locked mode thereof,

fig. 1c shows a front view, a top view, and a side of a fitting system according to the

invention in the fully locked mode thereof,

fig. 1d shows a magnification of the cross-sectional view of the assembly of fig. 1a along section C-C indicated in fig. 1a, fig. 1e shows a front view of another wing frame assembly according to the invention, and a cross-sectional view thereof along indicated section A-A, with the fitting system in the ventilation mode thereof, fig. 2a shows a front view of the wing frame assembly of fig.1a, and two cross-sectional views thereof along indicated sections A-A and B-B, with the fitting system in the first pivot mode thereof,

fig. 2b shows a perspective view of the wing frame assembly in opened positions thereof wherein the inner frame is pivoted about the first pivot axis relative to the outer frame, fig. 2c shows a magnification of the cross-sectional view of the assembly of fig. 1a along section C-C indicated in fig. 2a, fig. 3a shows a front view of a wing frame assembly of fig. 1a and fig. 2a, and two cross- sectional views thereof along indicated sections A-A and B-B, with the fitting system in the second pivot mode thereof,

fig. 3b shows a perspective view of the wing frame assembly, with the fitting system in the second pivot mode thereof, and the inner frame in the closed position thereof, fig. 3c shows a perspective view of the wing frame assembly, with the fitting system in the second pivot mode thereof, and the inner frame in an opened position thereof, and the inner frame being pivoted about the second pivot axis relative to the outer frame, fig. 3d shows a magnification of a part of a top view of the assembly, with the fitting system in the second pivot mode thereof, and the inner frame in the closed position thereof, fig. 3e shows a magnification of the same part of a top view of the assembly, with the fitting system in the second pivot mode thereof, and the inner frame in an opened position thereof, and the inner frame being pivoted about the second pivot axis relative to the outer frame,

fig. 3f shows a magnification of the cross-sectional view of the assembly of fig. 1a along section D-D indicated in fig. 3d, with the fitting system in the second pivot mode thereof, and the inner frame in the closed position thereof,

fig. 3g shows a magnification of the same cross-sectional view of the assembly, with the fitting system in the second pivot mode thereof, and the inner frame in an opened position thereof, and the inner frame being pivoted about the second pivot axis relative to the outer frame, fig. 4 shows a front view of a wing frame assembly according to the invention, and a cross- sectional view thereof along indicated section A-A, with the fitting system in the ventilation mode thereof, fig. 5a shows a perspective view, a top-, bottom and side view, and a cross-sectional view along section A-A, of rotary transmissions interconnecting two multi-position axles of a fitting system according to the invention,

fig. 5b shows a magnified perspective view of rotary transmissions interconnecting two multi position axles of a fitting system according to the invention,

fig. 5c shows a perspective view of two adjacent multi-position axles of a fitting system

according to the invention being interconnected by rotary transmissions, along with a hinge to pivotally connect the inner frame to the outer frame,

fig. 5d shows a perspective view of two adjacent multi-position axles being interconnected by rotary transmissions, along with a hinge to cooperate with the fitting system, fig. 6a shows a selector device of a fitting system according to the invention, in two

perspective views and a back- and top view thereof, while the fitting system is in the fully locked position,

fig. 6b shows an open-and-lock system of a selector device in a perspective view, fig. 6c shows a cross-sectional view through the same open-and-lock system of the selector device beneath the height of the spring and rod thereof, while the inner frame is in the closed position,

fig. 6d shows a cross-sectional view through the open-and-lock system of the selector device at the height of the spring and rod thereof, while the inner frame is in an opened position, fig. 7a shows a retainer element for the outer frame according to the invention prior to being clicked-in into an indentation of the outer frame

fig. 7b shows the retainer element of fig. 7a while being clicked-in into the indentation of the outer frame.

fig. 7c shows the retainer element of fig. 7a while being clicked-in into the indentation of the outer frame, indicating the sliding direction of the retainer element of fig. 7a.

fig. 7d shows the retainer element of fig. 7a being isolated in a perspective view, a side view, a top view, and a front view.

fig. 7e shows the retainer element of fig. 7a while being clicked-in into the indentation of the outer frame, and a filling plate being provided to the indentation of the adjacent side of the outer frame,

fig. 7f shows the retainer element of fig. 7a while being clicked-in into the indentation of the outer frame, and a filling plate being provided to the indentation of the adjacent side of the outer frame, fig. 7g shows an exploded view of a multi-position axle being adjusted to cooperate with the retainer element,

fig. 7h shows the filling plate of fig. 7f in a front, sectional, back, and perspective view. fig. 8a shows a stepped rotational filling plate in a perspective view, a top view, two side views and one detailed view,

fig. 8b shows the stepped rotational filling plate of fig. 8a together with extrusion frame

profiles in an exploded view representing the intended assembly thereof,

fig. 8c shows in a cross-sectional view of the inner and outer frame at one side thereof the stepped rotational filling plate of fig. 8a-b and extrusion frame profiles being mounted to the inner- and outer frame,

fig. 8d shows in the same view of fig. 8c the stepped rotational filling plate of fig. 8a-b and extrusion frame profiles in an exploded view representing the intended assembly thereof,

fig. 8e shows in a perspective view of a sectioned part of the inner and outer frame at one side thereof the stepped rotational filling plate and extrusion frame profiles being mounted to the inner- and outer frame, with a multi-position axle being mounted therein, fig. 9a shows in a perspective, front-side view a fitting system of a wing frame assembly according to the invention,

fig. 9b shows in a perspective, back-side view the same fitting system,

fig. 9c shows in a front-side perspective view the right-upper corner of the same fitting system, a top view of a horizontal cross-section through a pivot side at the height of a blocking element, and a perspective view of the same blocking element,

fig. 10a shows possible configurations of a fitting system according to the invention when two adjacent pivot axes are defined for the inner frame, and the fitting system has two multi-position axles,

fig. 10b shows possible configurations of a fitting system according to the invention when two adjacent pivot axes are defined for the inner frame, and the fitting system has three multi-position axles,

fig. 10c shows possible configurations of a fitting system according to the invention when two adjacent pivot axes are defined for the inner frame, and the fitting system has four multi-position axles, fig. 11a shows possible configurations of a fitting system according to the invention when two opposite pivot axes are defined for the inner frame, and the fitting system has two multi-position axles,

fig. 11b shows possible configurations of a fitting system according to the invention when two opposite pivot axes are defined for the inner frame, and the fitting system has three multi-position axles,

fig. 11c shows possible configurations of a fitting system according to the invention when two opposite pivot axes are defined for the inner frame, and the fitting system has four multi-position axles, fig. 12a shows possible configurations of a fitting system according to the invention when three pivot axes are defined for the inner frame, and the fitting system has two multi position axles,

fig. 12b shows possible configurations of a fitting system according to the invention when three pivot axes are defined for the inner frame, and the fitting system has three multi position axles,

fig. 12c shows possible configurations of a fitting system according to the invention when three pivot axes are defined for the inner frame, and the fitting system has four multi position axles, fig. 13 shows possible configurations of a fitting system according to the invention when four pivot axes are defined for the inner frame, and the fitting system has two multi position axles, fig. 14a shows a perspective view of a guide hinge according to the invention, being mounted to the outer frame of a wing frame assembly, and a perspective view of a corner piece with an inner guide element of the hinge,

fig. 14b shows a horizontal cross-section of the same wing frame assembly, at a height directly above the guide hinge, a side view of the same wing frame assembly, and a bottom view thereof, fig. 15a shows a perspective view of a folding-out hinge according to the invention, being mounted to the outer frame of a wing frame assembly,

fig. 15b shows a top view of a horizontal cross-section of the same wing frame assembly, at a height directly above the folding-out hinge, a top view and a perspective back-side view of a corner piece with an inner guide element of the hinge, and a top view of the same wing-frame assembly, fig. 15c shows a horizontal cross-section of the same wing frame assembly, at a height in the middle of the axle member of pivot side where the folding-out hinge is provided, a top view of the inner guide element of the folding-out hinge, and of the end of the axle member that extends below the inner guide element, a side view of this end, a front view of the corner piece with the inner guide element, and a vertical cross-section therethrough, fig.16a shows two front-side perspective views of the corner of the same wing frame

assembly with the same folding-out hinge,

fig. 16b shows a bottom view of a horizontal cross-section through the same wing frame assembly directly below the folding-out hinge, a side view of the same wing frame assembly, a top view and a perspective view of the corner piece with the inner guide element of the folding-out hinge, and a top view of the same wing frame assembly, fig. 17 shows a top view of a horizontal cross-section of the same wing frame assembly, at a height directly above the guide hinge, and a front view of the bottom half of the same wing frame assembly.

Figures 1a, 2a-b, 3a-c and 4 show an embodiment of a wing frame assembly 1 according to the invention. In this embodiment, the wing frame assembly 1 is a window frame assembly 1.

The wing frame assembly comprises a four-sided stationary outer frame 10, which defines a rectangular opening 11 and defines a plane of the wing frame assembly.

It further comprises a four-sided pivotal inner frame 20. Therein the inner frame 20 is configured to peripherally support a wing member 90, namely a wing panel member 90, namely a translucent panel member 90, that is, a window pane 90.

The pivotal inner frame 20 is pivotally connected to the outer frame by hinges 50. These hinges 50 are configured to determine a first pivot axis 2 and a second pivot axis 3 for the inner frame. The first and the second pivot sides 21 p, 22p are adjacent to one another, so that the wing frame assembly 1 is a tilt-and-turn wing frame assembly 1 , namely a tilt-and- turn window frame assembly 1.

The inner frame has a first pivot side 21 p and a second pivot side 22p, along which the first and second pivot axis 2, 3 runs, respectively, as well as a third side 23 and a fourth side 24. These third and fourth sides are in this embodiment non-pivot sides. Figures 1 b and 1c show the multi-mode fitting system 30 of the embodiment, in an expoded and assembled state, respectively. The fitting system is in the wing frame assembly 1 located between the outer frame 10 and the inner frame 20. This may for instance be verified from figures 1 a, 2a, 3a and figure 4, namely in the side and top views thereof. Figures 1 d, 2c, 3d- e, and figure 7e show this in more detail.

The fitting system 30 is configured to allow the inner frame 20 to be moved into a closed position 20c thereof, and opened positions 20p1 and 20p2 thereof.

The closed position 20c of the inner frame 20 is for example shown in figure 3b. It shows that in this closed position 20c, the rectangular opening 1 1 in the outer frame 10 is closed.

In opened positions 20p1 of the inner frame 20, the inner frame 20 is pivoted about the first pivot axis 2 relative to the outer frame 10. An opened position 20p1 of the inner frame 20 is shown in figure 2b.

In opened positions 20p2 of the inner frame 20, the inner frame 20 is pivoted about the second pivot axis 3 relative to the outer frame 10. An opened position 20p2 of the inner frame 20 is shown in figure 3c.

The multi-mode fitting system 30 comprises multiple multi-position axle members 31 , 32, 33, 34, 35, and a selector device 41.

The multi-position axle members 31 , 32, 33, 34 are rotatable mounted to the inner frame 20. This is for instance shown in figures 1a, 2a, 3a and figure 4, namely in the side and top views. Figures 1 d, 2c, 3d-e, and figure 7e show this in more detail.

The multi-position axle members are mounted to the inner frame 20 so, that the multi position axle members 31 , 32, 33, 34 each extend along an associated side 21 p, 22p, 23, 24, of the inner frame. This may best be verified in figure 2b for multi-position axle members 33 and 34, and by comparing with figure 1 c, but also in the top and side views of figures 1a, 2a, 3a and figure 4, and in figures 1 d, 2c, 3d-e, and figure 7e as well. Two of the multi-position axle members, namely multi-position axle members 31 and 32, extend along the pivot sides 21 p and 22p, respectively. Each multi-position axle member is rotatable about a respective rotation axis 31 q, 32Q, 33Q, 34Q thereof that extends parallel to the associated side of the inner frame - compare for instance figures 1 b and 1c with figure 2b.

The multi-position axle members are interconnected, such as to be interdependently rotatable between multiple positions thereof. This may best be envisaged from figures 1b and 1c for the whole fitting system 30 - a rotation of one of the axle members about its rotation axis results in the other axle members rotating with it, about their respective rotation axes. The rotary transmission between two adjacent axles is shown in more detail in figures 4a-d.

The selector device 41 is operatively connected to the multi-position axle members, to cause an interdependent rotation of the multi-position axles about the associated rotation axes 31Q, 32Q, 33Q, 34Q thereof.

In this embodiment, the selector device 41 is a handle 41 , that is operatively connected to the multi-position axle members 31 , 32, 33, 34 via a handle transmission 42, namely a rotary transmission 42, namely a bevel gears transmission 42.

In this embodiment, as is shown in figure 1b, figure 2b, and the combination of figure 6a and 6b, the bevel gears transmission comprises two bevel gears that engage one another to transmit the rotation of the handle axle onto the drive axle. One of these bevel gears is fixedly connected to the end of the handle shaft 43, and one other is fixedly connected to the drive axle member 35.

Thereby, the handle transmission 42 is configured to convert a displacement of the handle 41 into an interdependent rotation of the multi-position axles about the associated rotation axes thereof.

Each multi-position axle member is rotatable between one or more blocking positions 31 b, 32b, 33b, 34b and one or more releasing positions 31 r, 32r, 33r, 34r. It is referred to the top- and side views of figures 1a, 2a, 3a and 4, wherein the axle members by turns are shown having either position.

In the one or more blocking positions 31 b, 32b, 33b, 34b of each axle member, the axle member overlaps with portion 12, in the form of a shoulder 12, of the outer frame 10 at the associated side of the inner frame 20. Thereby it engages the outer frame 10 upon a movement of the associated side 21 p, 22p, 23, 24 of the inner frame 20 in an opening direction 21d, 22d, 23d, 24d thereof, which opening direction is away from the outer frame 10 at the associated side 21 p, 22p, 23, 24 of the inner frame and out of the plane of the wing frame assembly. Thereby, the overlap 12 thereby blocks the movement in the opening direction 21d, 22d, 23d, 24d.

In the one or more releasing positions 31 r, 32r, 33r, 34r, the axle member clears the outer frame 10 so as to pass the outer frame 10 at the associated side 21 p, 22p, 23, 24 of the inner frame 20 upon a movement of the associated side 21 p, 22p, 23, 24 of the inner frame 20 in said opening direction 21d, 22d, 23d, 24d thereof, such as to allow for said movement in said opening direction 21d, 22d, 23d, 24d.

The multi-mode fitting system 30 is configured to provide multiple modes, namely a locked mode 30I, a first pivot mode 30p1 , and a second pivot mode 30p2 thereof.

In figure 1a, the fitting system 30 is shown in the locked mode 30I thereof, which is associated with the closed position 20c of the inner frame 20. In this mode all axle members 31 , 32, 33, and 34 are in a blocking position 31b, 32b, 33b, 34b thereof. It may be verified that through the shape of each axle member and the radial position thereof, it would latch behind the shoulder 12 of the outer frame 10 at the associated side of the inner frame 20 upon moving the associated side 21 p, 22p, 23, 24 in the opening direction 21 d, 22d, 23d,

24d thereof and block this movement. With this positioning of the axle members, the axle members together block any movement of the inner frame 20 out of the closed position 20c thereof.

In figure 2a, the fitting system 30 is shown in the first pivot mode 30p1 thereof, which is associated with the opened positions 20p1 of the inner frame 20, wherein the inner frame 20 is pivoted about the first pivot axis 2 relative to the outer frame 10. In this mode, only axle member 31 is in the blocking position 31 r thereof. Axle members 32, 33 and 34 are in the releasing position 32r, 33r, 34r thereof. For the axle members 32, 33 and 34 it may be verified that now, through the shape of each axle member and the radial position thereof, these would pass the shoulder 12 and allow a movement of the associated sides 22p, 23 and 24 in the respective opening directions 22d, 23d and 24d thereof. Wth this positioning of the axle members, the fitting system thus enables a pivoting movement of the inner frame 20 out of the closed position 20c and into opened positions 20p1 thereof wherein the inner frame 20 is pivoted about the first pivot axis 2 relative to the outer frame 10. The inner frame 20 is shown in such an opening position 20p1 in figure 2b. In figure 3a, the fitting system 30 is shown in the second pivot mode 30p2 thereof, which is associated with the opened positions 20p2 of the inner frame 20, wherein the inner frame 20 is pivoted about the first pivot axis 2 relative to the outer frame 10. In this mode, only axle member 32 is in the blocking position 32r thereof. Axle members 31 , 33 and 34 are in the releasing position 31 r, 33r, 34r thereof. For the axle members 31 , 33 and 34 it may be verified that now, through the shape of each axle member and the radial position thereof, it would pass the shoulder 12 and allow a movement of the associated sides 21 p, 23 and 24 in the respective opening directions 21d, 23d and 24d thereof. With this positioning of the axle members, the fitting system thus enables a pivoting movement of the inner frame 20 out of the closed position 20c and into opened positions 20p2 thereof wherein the inner frame 20 is pivoted about the first pivot axis 2 relative to the outer frame 10. The inner frame 20 is shown in such an opening position 20p2 in figure 3c.

Figure 1e shows a fitting system 30 of a different embodiment in the locked mode 30I thereof, which is associated with the closed position 20c of the inner frame 20. In this embodiment, the fitting system 30 is mounted to the outer frame 10, and not, alike the embodiment in figures 1a, 2a, and 3a, to the inner frame 20. Wth the fitting system in this mode all axle members 31 , 32, 33, and 34 are, as before, in a blocking position 31 b, 32b, 33b, 34b thereof. It may be verified that through the shape of each axle member and the radial position thereof, shoulder 25 of the inner frame 20 at the associated side of the inner frame 20 would latch behind the axle member upon moving the associated side 21 p, 22p, 23,

24 in the opening direction 21 d, 22d, 23d, 24d thereof and block this movement. With this positioning of the axle members, the axle members together block any movement of the inner frame 20 out of the closed position 20c thereof. From the figure, it may be verified that for this embodiment, through the similar shape of the axle members, the pivot positions are realized in a manner similar to that shown in figures 2a and 3a, but now with the shoulders

25 of the inner frame respectively engaging and passing axle members at the pivoting and non-pivoting sides, instead of axles engaging shoulder 12 of the outer frame 10 as in the embodiment of figures 1a, 2a and 3a. It is noted that other features, now to be discussed in relation to embodiments with the fitting system 30 being mounted to the inner frame 20, may in a similar fashion be applied to the embodiment of figure 1e while providing the same advantages, albeit with the obvious adaptations entailed by the mounting to the outer instead of the inner frame.

For the handle 41 , it is shown by the advancement from figures 1a to 2a on to 3a, that it is rotatable between respective multiple handle positions 411, 41 p1 , 41 p2 thereof. These positions respectively correspond to the three modes 30I, 30p1 and 30p2 of the fitting system 30.

It is shown by the advancement from figures 1a to 2a, that the handle transmission 42 is configured to convert a displacement thereof in the form of a 90° counterclockwise rotation of the handle 41 from the downwardly directed position shown in figure 1a to the righthand directed position of figure 2a into a 90° interdependent rotation of the multi-position axles about the associated rotation axes thereof, from the fully locked position 30I of the fitting system 30 into the first pivot mode 30p1 of the fitting system 30.

For the handle 41 , it is shown by the advancement from figures 2a to 3a, that the handle transmission 42 is configured to convert a displacement thereof in the form of a 90° counterclockwise rotation of the handle 41 from the rightways directed position shown in figure 2a to the upwardly directed position of figure 3a into a 90° interdependent rotation of the multi-position axles about the associated rotation axes thereof, from the first pivot mode 30p1 of the fitting system 30 into the second pivot mode 30p2 of the fitting system 30.

Inevitable from its practical purpose is that the above also holds for the reverse advancement from figures 3a to 2a and 2a to 1a. Clockwise rotation of the handle 41 over 90° from the upwardly directed position of figure 3a is converted by the handle transmission 42 into a 90° interdependent rotation of the multi-position axles about the associated rotation axes thereof, from the second pivot mode 30p2 into the first pivot mode 30p1 of figure 2a, and rotating the handle 41 from this position further in this direction by 90° brings the fitting system 30 into the fully locked mode 30I thereof shown in figure 1a.

In this embodiment, the fitting system 30 is furthermore configured to allow the inner frame 20 to also be moved into a ventilation position 20v thereof. The inner frame 20 is shown in this position in figure 4. Therein the inner frame is pivoted about the first pivot axis 2 relative to the outer frame 10. Associated with the ventilation position 20v is the ventilation mode 30v of the fitting system 30, which mode is in the middle between the first pivot position 30p1 and the fully locked position 30I.

This ventilation mode 30v corresponds to a 45° rotation of the handle 41 from its downwardly directed position 411 counterclockwise, and a 45° rotation of the axle members of the fitting system 30 from blocked positions 31b, 32b, 33b, 34b thereof towards the releasing positions 32r, 33r and 34r and blocked position 31 r of the first pivot position 30p1 of the fitting system. In effect, the corresponding flat face parts 37f of axle members 32, 33, and 34 are at a 45° angle with respect to the plane of the wing frame assembly, which creates at each respective shoulder 12 extending there along a small free space within the locking chamber 38 in the opening direction 225, 235, 245, so to allow the associated sides of the inner frame 20 to be moved away from the outer frame through this free space until the axle member engages both frames to block further movement. Since axle member 31 is in between two blocking positions, it has its curved face part 37 thereof still running along the shoulder 12, so that it blocks any movement away from the outer frame at the associated side 21 p.

Pivoting the inner frame 20 from its closed position 20c into its ventilation position 20v creates a small chink in between the inner and outer frame, extending along the second, third and fourth side 22p, 23 and 24 of the inner frame 20. This chink allows air to pass through the locking chambers 38 at the first, third and fourth side of the inner frame from one side of the plane of the wing frame assembly to the other side, thereby providing a ventilation function.

In this embodiment rotary transmissions 36 are provided that each interconnect two of the multi-position axle members so as to be interdependently rotatable. These rotary

transmissions 36 are in the form of gear transmissions, namely bevel gears transmissions. Herein, as is preferred, each rotary transmission is arranged in a corner region 27 of the inner frame between adjacent ends 31 e and 32e, 32e and 33e, 33e and 34e, 34e and 31 e of two multi-position axle members.

In figures 5a-b it is visible that, in order to maintain a relative positioning of the bevel gears 36 and thereby of the adjacent axle members interconnected by the bevel gears, an aligner corner element 36a is provided with two fixedly interconnected perpendicular pins sticking into bores of the bevel gears 36 along the rotational axes of the axle members.

As may best be verified from comparing figure 1 b with figure 2b, he multi-position axle members 31 , 32, 33, 34 extend along a majority of the length, preferably substantially the full length, of the inner frame at the respective side 21 p, 22p, 23 and 24 thereof.

Furthermore, as shown in figures 1 b-c, the fitting system 30 comprises one drive axle member 35 that extends along the third, non-pivot side 23 of the inner frame. In this embodiment, the multi-position axle member 33 forms the drive axle member 35.

The drive axle member is rotatable about an associated rotation axis 35Q parallel to the third side, into positions 35I, 35p1 and 35p2, respectively corresponding with the three modes 30I, 30p1 , 30p2 of the fitting system 30. In this embodiment, the rotation axis 35Q is formed by the rotation axis 33Q.

It is best shown in figure 1 b, that in this embodiment, in the fully locked mode 30I of the fitting system 30, the position 35I of the drive axle member 35 corresponds to a blocking position 35b thereof. From figure 2b it may be verified that in the first pivot mode 30p1 of the fitting system 30, the position 35p1 of the drive axle member 35 corresponds to a releasing position 35r thereof. From figure 1 b in combination with figures 3b and 3c, it may be derived that the drive axle member 35 is also in a releasing position 35r thereof in the second pivot mode 30p2 of the fitting system 30, so that position 35p2 corresponds to this releasing position.

The drive axle member is connected to the multi-position axle members 31 , 32 and 34 via respective rotary transmissions 36. That is, along the third side 23 of the inner frame 20 it is connected via two rotary transmissions 36 to multi-position axle members 32 and 34 that extend along the opposed second side 22p and fourth side 24 of the inner frame 20.

Furthermore, the drive axle member 35 is connected to the handle 41 via a handle shaft 43 thereof, which is rotatable to correspond to the respective handle positions 411, 41 p1 , 41 p2 and 41v1 which, as described before, then respectively correspond to the three modes 30I, 30p1 , 30p2, and 30v of the fitting system 30 as respectively shown in for instance figures 1 a, 2a, 3a and 4.

In this embodiment, as is shown in figure 1 b, figure 2b, and the combination of figure 6a and 6b, the bevel gears transmission 42 comprises two bevel gears that engage one another to transmit the rotation of the handle shaft 43 onto the drive axle 35. One of these bevel gears is fixedly connected to the end of the handle shaft 43 that faces the drive axle 35, in line with rotation axis 43Q of the handle shaft 43. The other bevel gear is fixedly connected to the drive axle member 35 in line with the rotation axis 35Q which is perpendicular to the rotation axis 43Q of the handle shaft 43. To align this bevel gear to the rotation axis 35Q, it is fixed to the drive axle member 35 inside a radial indentation 35i of the drive axle member 35, which is best shown in figures 2b and 6b.

The handle transmission 42 is configured to convert a rotation of the handle 41 into its handle positions 411, 41 p1 , 41 p2 and 41 v as described before into a rotation of the drive axle member 35 into the positions 35I, 35p1 , 35p2 and 35v thereof, and thus, via the rotary transmissions 36 into an interdependent rotation of the multi-position axles about the associated rotation axes thereof. In this embodiment, each multi-position axle member 31 , 32 associated with one of the pivot sides 21 p, 22p of the inner frame is a one-way axle member - which means that it has only one release position.

The one-way axle member 31 associated with the first pivot side 21 p has one blocking position 31 b in the first pivot mode 30p1 , one releasing position 31 r in the second pivot mode 30p2, and one blocking position 31 b in the fully locked mode 30I.

The one-way axle member 32 associated with the second pivot side 22p has one releasing position 32r in the first pivot mode 30p1 , one blocking position 32b in the second pivot mode 30p2, and one blocking position 32b in the fully locked mode 30I.

In the shown embodiment, the hinges 50 by means of which the inner frame 20 is pivotally connected to the outer frame 10 are two tilt hinges 50, provided at the first pivot side 21 p only. The upper one of the tilt hinges 50 is shown in more detail in figure 5c, and the lower one in figure 5d. These tilt hinges are in itself commonly known in the art and are therefore not further described here.

Although not shown in the figures, it may be envisaged that in other embodiments, the hinges 50 determining the pivot axes 2, 3,4, 5 of the wing frame assembly 1 may alternatively even be formed by two or more multi-position axle members 31 , 32, 33, 34 itself. Herein the axle members would remain in place with respect to the inner frame 20 while the wing is pivoted.

With the shape and configuration of the axle members in the shown embodiments, it may be envisaged that an axle is able to function as a hinge only when over the range of angles over which the wing is pivoted, it is positioned with respect to the outer frame 10 such as to still establish a blocking position, in that it still blocks a movement of the associated pivot side away from the outer frame 10. Consequently the range of angles over which the wing may be pivoted, would in this case be limited to the angle above which the axle member extending at the side associated with the pivot axis over which the window is pivoted, would, due to its radial position with respect to the inner frame 10 at this angle, take on a releasing position for the first time while increasing this pivot angle.

To establish blocking- and releasing positions for the multi-position axle members, each multi-position axle member 31 , 32, 33, 34 in the shown embodiment comprises a locking portion 37 which is located between the inner frame 20 and the outer frame 10 in the closed position 20c of the inner frame 20. This positioning follows for instance from the top and side views of figures 1a, 2a and 3a, but in more detail also for instance from figures 1 d, 2c and 3d.

As shown, of each multi-position axle member 31 , 32, 33, 34 the locking portion 37 is one single locking portion that axially extends along substantially the entire length thereof. As best illustrated in fig. 2b and in more detail in figure 5c, each locking portion 37 at axially outward ends 31 e, 32e, 33e, 34e of the respective axle member it is part of, merges into the two rotation transmissions 36 interconnecting the multi-position axle and adjacent multi position axles at both respective axial ends 37e of the locking portion.

Though not shown here, it may be envisaged that in embodiments, the multi-position axles may in other embodiments each have, instead of one locking portion, multiple locking portions 37 which are axially spaced from one another. For instance, each multi-position axle member may have two locking portions 37 at the axial ends of the axle member, which are each at an axially outward end of the axle member, e.g. wherein these are each at an outward end thereof directly connected to, or each merge into, two rotary transmissions 36 interconnecting the multi-position axle members and adjacent multi-position axle members, e.g. in the way shown for the locking portions 37 of the embodiment in the figures. It is also envisaged that one or more locking portions are provided at (an)other axial location(s) along an axle member. Therein, e.g. to save space and/or material, in between the multiple locking portions 37, the multi-position axles may for instance have a diameter that is smaller, e.g. two or more times smaller than the diameter of the locking portion(s).

In the embodiment shown, to establish the locking and releasing ability of the multi-position axles 31 , 32, 33 and 34, each of the locking portions 37 thereof is rotationally non-symmetric with respect to the rotation axis 31 q, 32Q, 33Q, 34Q of the respective multi-position axle member. In the closed position 20c of the inner frame, a respective shoulder 12 of the outer frame 10 extends axially along the locking portions at a side of the multi-position axle member in the respective opening direction 215, 225, 235, 245 of the associated side 21 p, 22p, 23, 23p, 24, 24p of the inner frame. This is indicated in figures 1a, 2a and 3a.

Through this configuration, each locking portion 37 in each blocking position 31 b, 32b, 33b, 34b of the multi-position axle thereof extends at least partially outwards from the contour of the shoulder 12 extending there along, and in the releasing positions 31 r, 32r, 33r, 34r of the multi-position axle extends completely inwards from the contour of this shoulder 12. Herein ‘outwards’ and‘inwards’ respectively correspond to a direction towards the wing member 90 supported by the inner frame 20 and perpendicular to the opening direction at the respective side of the inner frame that is associated with the multi-position axle.

The effect is that each multi-position axle member 31 , 32, 33, 34 present in each blocking position 31 b, 32b, 33b, 34b thereof engages the outer frame by the locking portions 37 thereof at the respective shoulders 12 extending there along upon movement of the associated side 21 p, 22p, 23, 23p, 24, 24p of the inner frame in the opening direction 215, 225, 235, 245 thereof, such as to block said movement.

Axially along each respective locking portion 37, at a side of the locking portion in the respective opening direction 215, 225, 235, 245, a respective shoulder 25 of the inner frame 20 extends such that in each releasing position 31 r, 32r, 33r, 34r of the multi-position axle the locking portion thereof extends completely inwards from the outer contour of the respective shoulder 25 extending there along.

In the closed position 20c of the inner frame 20 each shoulder 25 of the inner frame abuts the shoulder 12 of the outer frame 10 extending along the same respective locking portion 37 such that the radially inward surfaces thereof 12s, 25s, with respect to the rotation axis 31Q, 32Q, 33Q, 34Q of the multi-position axle member comprising the locking portion 37 it extends along, are substantially flush at the junction. This is visible in the top and side views of figures 1 a, 2a, and 3a, but more in detail in figures 1 d, 2c and 3b.

Each shoulder 12 of the outer frame, at the radially inwards side thereof with respect to the rotation axis 31 q, 32Q, 33Q, 34Q of the multi-position axle the locking portion 37 is part of the shoulder extends along, delimits an indentation 13 in the outer frame. The effect is that the locking portion 37 the respective shoulder 12 extends along, extends within the indentation 13 in each blocking position 31 b, 32b, 33b, 34b thereof.

Each of the shoulders 25 of the inner frame at the radially inwards side thereof - with respect to the rotation axis 31 q, 32Q, 33Q, 34Q of the multi-position axle comprising the locking portion 37 it extends along - delimits an indentation 26 in the inner frame, so that the locking portion extends within the indentation 26 in each releasing position 31 r, 32r, 33r, 34r thereof.

In the closed position 20c of the inner frame, the indentations 26 of the inner frame each - together with the indentations 13 of the outer frame extending along the same respective locking portion 37 - define an internal locking chamber 38 for the locking portion that radially encloses the locking portion. The effect is that it is rotatable within the chamber 38 by the rotation of the multi-position axle member 31 , 32, 33, 34 it is comprised by between the multiple positions 31b, 31 r, 32b, 32r, 33b, 33r, 34b, 34r of the axle member.

In the closed position 20c of the inner frame, the radially inward surfaces 25s, 12s of the indentation of the inner and outer frame defining each internal locking chamber 38 are substantially flush at the junctions thereof, such as to together form a substantially continuous inner wall 38w of the internal locking chamber.

The circumference of each locking portion 37 has a curved face part 37c which forms a part of a circle 37o, indicated in figure 3e, and, corresponding to the number of releasing positions 31 r, 32r, 33r, 34r of the multi-position axle it is comprised by, has one or more flat face parts 37f within the contour of this circle 37o. Each flat face part 37f extends along the opening direction 215, 225, 235, 245 of the multi-position axle member and completely inwards from the contour of the shoulder 12 in each releasing position 31 r, 32r, 33r, 34r of the multi-position axle member. Furthermore, each curved face part 37c extends at least partially outwards from the contour of the shoulder 12 in each blocking position 31 b, 32b,

33b, 34b of the multi-position axle member.

In the closed position 20c of the inner frame 20, each internal locking chamber 38 is substantially circular in diameter along the axial extension thereof. In fact each locking chamber 38 is substantially cylindrical. The curved face part 37c of the circumference of the locking portions 37 is of a complementary shape, such as to snugly fit to the inner wall 38w of the internal locking chamber 38 in the multiple positions 31b, 31 r, 32b, 32r, 33b, 33r, 34b, 34r of the multi-position axle member it is comprised by.

Though not shown, it may be envisaged from the figures that other shapes for the shoulders, indentations, locking chambers and locking portions are possible to establish the same functionality, even as the relative positioning thereof in the multiple positions of the axle members.

Preferably, in this embodiment, the selector device 41 of the fitting system 30 is, for purposes of safety when using the wing assembly, provided with an open-and-lock system 44 that is configured to block a rotation of the handle shaft 43 in opened positions 20p1 , 20p2 and in the ventilation position 20v1 of the inner frame 20. This system thereby establishes that the multi-position axle members are rotatable between the modes of the fitting system only in the closed position 20c of the inner frame. Such an open-and-lock system is shown in detail in figures 6b-d. The open-and-lock system 44 comprises a spring 45, pressing in a direction opposite to the opening direction 235 against ring member 46, which encloses the drive axle 35 at a front side of the ring member, that is, a side thereof in opening direction 235, and a pin 47 protruding from the ring member 46 at a back side thereof.

The ring member is movable with respect to the drive axle 35 against the action of the spring in a forward direction, that is, in the opening direction 235, and along with the action of the spring in a backward direction.

An arm 48 protruding downwardly from the ring member 46 at front side thereof cooperates with an indented disc 49 rotating along with drive axle member 35 - that is, is fixed thereto in line with the drive axle 35. The indented disc 49 has radial indentations 49I, 49p1 , 49p2, and 49v, which are each adapted to receive the arm 48 when the handle is rotated respectively in positions 411, 41 p1 , 41 p2 and 41 v.

Figure 6c shows the open-and-lock system being located in the wing assembly. It shows in a cross-section of the assembly at the center height of the spring 45, ring member 46 and pin 47, in a closed position 20c of the inner frame 20. Figure 6d shows a cross section of the wing assembly underneath the ring member, namely at the center of the height of the indented shaft 49, in the second pivot position 20p2 of the inner frame.

These figures show that the pin 47 extends radially outwards from the inner frame 20 at the back side thereof, and is in the closed position 20c of the inner frame 20 pressed by the action of the spring against the outer frame 10. When the third side 23 of the inner frame 20 is moved in opening direction 235, which is the case in opened positions 20p1 , 20p2 of the inner frame 20, the ring member 46 along with the pin is moved by the action of the spring 45 in the backward direction, from the position shown in figure 6c to that of figure 6d. Thereby, the arm 48 is moved into the indentation of the indented disc 49 that corresponds to the position of the handle 41 , namely, respectively into indentation 49I, 49p1 , 4p2 or 49v when the handle is in position 411, 41 p1 , 41 p2 or 41 v. In figure 6d, the handle 41 is in position 41 p2, so that the arm 48 is moved into indentation 49p2 of the indented disc.

Due to the action of the spring 45, the arm 48 remains inside the indentation in opened positions of the inner frame, such as to lock the position of the handle 41. The arm 48 inside the indentation prevents rotation of the indented disc 49, and along with it that of drive axle 35, and thus, via handle transmission 42, that of the handle shaft 43. The handle shaft 41 is consequently not movable into the other handle positions by rotation of the handle shaft 43. The open-and-lock system prevents a rotation of the handle 41 in opened positions of the inner frame. Only when the inner frame is moved into the closed position 20c thereof, the pin 47 is pressed against the outer frame 10, moving the pin 47 along with the ring member 46 and arm 48 forwards - in opening direction 235 - against the action of the spring. Thereby the arm 48 is moved out of the indentation of the indented disc 49, so that the disc 49, and along with it the drive axle 35 and thus via handle transmission 42 the handle shaft 43 becomes rotatable about its rotation axis. The handle 41 may thus in this closed position 20c be moved into the other handle positions.

As visible for instance in figure 3c and 3e, in this embodiment a tilt opening stay 14 interconnects the outer and inner frame 10, 20 such as to restrict the pivoting movement around the second pivot axis up to a predetermined tilting angle y _t of around 5°.

The working principle of this opening stay 14 is shown by the detailed views of figures 3d-g.

A strip is provided to axle member 34 near an end 34e thereof, an axially outward end being rotatably mounted thereto. Strip 39 has on an axially inward end thereof a mushroom-shaped element 39m protruding radially outwardly therefrom, and is at the outward end mounted to the axle member, such that the strip 39 is rotatable with respect to the axle member 34 between an aligned position, with its length direction extending parallel to the rotation axis 34Q - shown in figures 3b, d and f - and a slewed position, with its length direction extending at an angle with the rotation axis 34Q - shown in figures 3c, e and g. When pivoting the inner frame 20 over the second pivot axis, mushroom-shaped element 39 slides in an axial direction within C-shaped slide element 15 which is fixed to the outer frame 10 while the strip 39 rotates. This is shown by the advancement from figure 3b to 3c and vice versa, 3d to 3e and vice versa, and 3f to 3g and vice versa.

At the predetermined tilting angle y _t , shown in figures 3c, e and f, the mushroom-shaped element 39m engages the slide element 15 such that it is blocked from moving further outwardly, and consequently that the inner frame 20 is blocked from tilting further away from the outer frame 10.

It is shown by comparing figures 1c, 2d, and 3d, that the mushroom-shaped element 39 is configured to rotate along with the axle member 34 within the locking chamber 38 in the aligned position of the strip 39. Comparing the figures reveals that only when the fitting system 30 is in the second pivot mode 30p2, wherein the axle member 34 is in the releasing position 34r of figures 3d, and 3f, the mushroom-shaped element 39 is radially directed towards the sliding element 15. Figure 3f shows that this end is slanted such that the mushroom-shaped element is able to be rotated with axle member 34 from the position shown in figure 2b to that of figures 3d and 3f without being hindered, while being forced to slide into the sliding element 15 upon tilting the inner frame out of the closed position.

In figures 7a-g, a retainer element 16 is shown, clickable inside the indentation of the outer frame as shown by the advancement from figure 7a to 7b such as to be slidably mounted thereto. See figure 7c for the sliding directions. From figure 7g it may be verified that claws 32c of axle member 32, here shown in an exploded view, match with engaging portion 16e such as to be rotatable underneath the engaging portion 16e upon rotation of axle member 32 around its rotation axis, and latch behind it upon moving the axle member 32 upwardly in the figure. The axle member 32 is rotated into this position in the pivot mode 30p2 associated with the pivot side 22p, so that the engaging portions 16c of retainer element 16 and claws 32c cooperate to prevent, in opened positions while pivoting over pivot axis 3, that the inner frame 20 may by a user, e.g. accidentally, be lifted out of the outer frame 10 by moving the inner frame upwards.

Figure 7f also shows a filling plate 17 being mounted to the outer frame 10 within an indentation thereof at the, in this figure, vertical side. In figure 7h, the filling plate is shown again in isolation. The filling plate has a securing spring 17s to secure the filling plate into position inside the indentation. The filling plate may be provided to the outer frame 10 e.g. for compensating tolerances in machining, or e.g. to attune the indentation to the axle member of the fitting system 30 rotating inside the indentation, or e.g. to attune it to the indentation in the inner frame 20 at the corresponding side.

Figures 8a-e show a stepped rotational filling plate 18, intended to cooperate with extrusion profile 19 of the outer frame 10. These extrusion profiles may be used as part of the inner or outer frame, e.g. to fit into another extrusion profile of the respective frame, or e.g. to fit into an attuned indentation machined into the respective frame, e.g. being made out of wood.

Depending on the angular position of the filling plate 18 in an assembled state, shown in figure 8c and 8e, the extrusion profile 19 is placed onto a lower or higher step of the filling plate 18, so that the radial position of the extrusion profile 19 with respect to the outer frame within the indentation is adjustable, e.g. to atttune the indentation to the axle member of the fitting system 30 rotating inside the indentation, or e.g. to attune it to the indentation in the inner frame 20 at the corresponding side. In figures 9a-c, a fitting system 30 of a wing frame assembly 1 according to another, preferred embodiment of the invention is shown. In this embodiment the one or more locking portions 37 of the axle members 31 , 32, 33, 34 are formed by radially inward indentations 37r of the axle member 31 , 32, 33, 34, extending over an angular range of the axle member 31 , 32, 33, 34. This is shown in detail in figure 9c. The annular range corresponds to the rotation of the axle member around the respective rotation axes 31 q, 32Q, 33Q, 34Q thereof between one blocking position 31 b, 32b, 33b, 34b and one or more releasing positions 31 r, 32r, 33r, 34r thereof. A blocking protrusion 12 fixed to the outer frame 10, extends radially inwardly within the contour of the indentation in both the blocking position 31 b, 32b, 33b, 34b and the releasing positions 31 r, 32r, 33r, 34r, forming the portion 12, namely the shoulder 12. Each indentation extends between two radially extending surfaces 37s. In the blocking position of the axle member, which is shown as an example for axle member 33 in figure 9c, one of these surfaces 37s extends across said blocking protrusion 12 in an opening direction 23d of the associated side 23 of the inner frame, when seen in a radial cross-section through the axle member alike in figure 9c. It extends such, that it tangentially engages the blocking protrusion of the outer frame upon a movement of the associated side of the inner frame in said opening direction 23d, thereby blocking said movement in said opening direction. In the releasing position(s), said radial surface 37s extends along the blocking protrusion 12, when seen in said radial cross-section in said opening direction, so as to clear the blocking protrusion 12, thereby passing the outer frame 10 at the associated side of the inner frame upon a movement of the associated side of the inner frame in said opening direction thereof, allowing for the movement of the inner frame in the opening direction.

The blocking protrusions 12 may for example be integral parts of the outer frame, or may for example be mounted to sides thereof. In the embodiment shown, each blocking protrusion is a head part of a separate blocking element, shown in figure 9c, in the bottom right, which has a connection part 12c as a longitudinal prolongation thereof. The connection part 12c is configured to be inserted into one of the sides of the outer frame, namely in a bore thereof, such as to be secured thereto, and is for this purpose provided with screw thread. After insertion the head part 12 protrudes from the outer frame to form the blocking protrusion. The head part is cylindri cally shaped, and has engagement surfaces which are configured to be engaged by a tool in order to screw the blocking element into the associated side of the outer frame. In this embodiment, the head part is slightly eccentric from the connection part.

In this embodiment, at two blocking protrusions and radial indentations of the axle member are provided for each axle member at each side of the frame assembly, namely for the axle members 31 , 32 extending at the two pivot sides 21 p, 22p and the axle members 33, 34 extending at the two non-pivot sides 23, 24. The combinations of protrusions and indentations are spaced from each other in the longitudinal direction of the axle member, namely provided near the ends thereof.

In this embodiment, the inner frame comprises a rectangular or square framework out of four individual beams, alike in the embodiment of figures 1-8. The inner frame comprises tube shaped embedded case elements 29, which are also shown in figures 9a and 9b, which rotatably support the axle members along the sides. The axle members rotate inside the case elements 29. The case elements 29 are provided at an outer surface of the beams within an inwardly directed cutback along the side, namely a step combined with an elongate groove, so that the case elements 29 and the supported axle members extend within the outer contour of the inner frame 20. This is visible in figure 9c. Two case elements 29 are provided for each axle member, namely each end thereof. The case elements all support adjacent axle members, and are therefore formed as corner pieces of adjoined perpendicular parts. The radial indentations of the axle member extend inside the case elements.

Therefore, the case elements are provided with corresponding openings 29o, extending over the same angular range - see figure 9c.

In the above discussed embodiments of a wing frame assembly 1 according to the invention, two pivot axes 2 and 3 are defined for the inner frame 20, the inner frame correspondingly has two pivot sides 21 p, 22p and two non-pivot sides 23, 24, and the fitting system correspondingly has two pivot positions 30p1 and 30p2, and comprises an axle member 31 , 32, 33, 34 along each side 21 p, 22p, 23, 24 of the inner frame 20. This configuration of the axle members is schematically shown in figure 10c.

However, multiple other configurations are possible which accord to the invention, facilitating other and/or more pivot axes for the inner frame. A number of these configurations are shown in figures 10a-c, 11a-c, 12a-c and 13. Needless to say, the figures may also be rotated to obtain different orientations of the pivot axes.

The figures 10a-c show possible configurations when two adjacent pivot axes 2, 3 are defined for the inner frame 20, and the fitting system 30 has respectively two, three and four multi-position axles. Figures 11a-c show possible configurations when two opposite, parallel pivot axes 2, 3 are defined for the inner frame 20, and the fitting system 30 has respectively two, three and four multi-position axles. In each of these configurations, each multi-position axle member associated with one of the non-pivot sides 23, 24 of the inner frame 20 is, if present, a two-way axle member. This two- way axle member therein has two releasing positions in the two respective pivot modes 30p1 , 30p2, and one blocking position in the fully locked mode 30I.

Each multi-position axle member associated with one of the pivot sides 21 p, 22p of the inner frame 20 is, if present, a one-way axle member. Therein the one-way axle member associated with the first pivot side 21 p has one blocking position in the first pivot mode 30p1 , one releasing position in the second pivot mode 30p2, and one blocking position in the fully locked mode 30I.

The one-way axle member associated with the second pivot side 30p2 has one releasing position in the first pivot mode 30p1 , one blocking position in the second pivot mode 30p2, and one blocking position in the fully locked mode 30I.

Figures 12a-c show possible configurations when three pivot axes 2, 3, and 4 are defined for the inner frame 20, and the fitting system 30 has respectively two, three and four multi position axles. The first, second and third sides are all pivot side 21 p, 22p, 23p and the fourth side is a non-pivot side 24.

The modes of the fitting system further comprise, in addition to the first and second pivot mode 30p1 and 30p2, a third pivot mode 30p3 associated with opened positions 20p3. In these opened positions 20p3 the inner frame 20 is pivoted about the third pivot axis 4 relative to the outer frame 10. Each multi-position axle member 31 , 32, 34 extending along one of the first pivot side 21 p and the second pivot side 22p and fourth side 24 is in one of the releasing positions 31 r, 32r, 34r thereof, and each multi-position axle 33 extending along the third pivot side 23p is in one of the blocking positions 33b thereof. In effect the fitting system enables a pivoting movement of said inner frame 20 out of the closed position 20c and into opened positions 20p3 thereof wherein the inner frame 20 is pivoted about the third pivot axis 4 relative to the outer frame 10.

The multi-position axle member 34 associated with the non-pivot side 24 of the inner frame is a three-way axle member, which has three releasing positions 34r in the three respective pivot modes 30p1 , 30p2, 30p3, and one blocking position 34b in the fully locked mode 30I.

At least two of the multi-position axle members are associated with one of the pivot sides 21 p, 22p, 23p of the inner frame 20 are each a two-way axle member. The two-way axle member 31 associated with the first pivot side 21 p has one blocking position 31 b in the first pivot mode 20p1 , one releasing position 31 r in the second pivot mode 20p2, one releasing position 31 r in the third pivot mode 20p3, and one blocking position 31 b in the fully locked mode 20I.

The two-way axle member 32 associated with the second pivot side 22p has one releasing position 32r in the first pivot mode 30p1 , one blocking position 32b in the second pivot mode 30p2, one releasing position 32r in the third pivot mode 30p3, and one blocking position 32b in the fully locked mode 30I.

The two-way axle member 33 associated with the third pivot side 33 has one releasing position 33r in the first pivot mode 30p1 , one releasing position 33r in the second pivot mode 30p2, one blocking position 33b in the third pivot mode 30p3, and one blocking position 33b in the fully locked mode 30I.

Figure 13 shows a possible configuration when four pivot axes 2, 2, 4, 5 are defined for the inner frame 20, and the fitting system 30 has respectively two, three and four multi-position axles. The first, second, third and fourth side are all pivot sides 21 p, 22p, 23p, 24p.

The modes of the fitting system further comprise, in addition to the first, second and third pivot mode 30p1 , 30p2, 30p3, a fourth pivot mode 30p4. This fourth pivot mode 30p4 is associated with opened positions 20p4, wherein the inner frame is pivoted about the fourth pivot axis 5 relative to the outer frame. Each multi-position axle member 31 , 32, 33 extending along one of the first, the second, and the third pivot side 21 p, 22p, 23p is therein in one of the releasing positions thereof 31 r, 32r, 33r, and each multi-position axle 34 extending along the fourth pivot side 24p is in one of the blocking positions 34b thereof. In effect the fitting system 30 enables a pivoting movement of said inner frame 20 out of its closed position 20c and into opened positions 20p4 thereof wherein the inner frame 20 is pivoted about the fourth pivot axis 5 relative to the outer frame.

Each multi-position axle member 31 , 32, 33, 34 is a three-way axle member, which has three releasing positions 31 r, 32r, 33r, 34r in the four respective pivot modes 30p1 , 30p2, 30p3, 30p4 not associated with the pivot side 21 p, 22p, 23p, 24p of the inner frame associated with the multi-position axle member, and one blocking position 31 b, 32b, 33b, 34b in the fully locked mode 20c. Each multi-position axle member 31 , 32, 33, 34 associated with one of the pivot sides 21 p, 22p, 23p, 24p of the inner frame is a two-way axle member.

The three-way axle member 31 associated with the first pivot side 21 p has one blocking position 31 b in the first pivot mode 30p1 , one releasing position 31 r in the second pivot mode 30p2, one releasing position 31 r in the third pivot mode 30p3, one releasing position 31 r in the fourth pivot mode 30p4, and one blocking position in the fully locked mode 30I.

The three-way axle member 32 associated with the second pivot side 22p has one releasing position 32r in the first pivot mode 30p1 , one blocking position 32b in the second pivot mode 30p2, one releasing position 32r in the third pivot mode 30p3, one releasing position 32r in the fourth pivot mode 30p4, and one blocking position 32b in the fully locked mode 30I.

The three-way axle member 33 associated with the third pivot side 23p has one releasing position 33r in the first pivot mode 30p1 , one releasing position 33r in the second pivot mode 30p2, one blocking position 33b in the third pivot mode 30p3, one releasing position 33r in the fourth pivot mode 30p4, and one blocking position 33b in the fully locked mode 30I.

The three-way axle member 34 associated with the fourth pivot side 24p has one releasing position 34r in the first pivot mode 30p1 , one releasing position 34r in the second pivot mode 30p2, one releasing position 34r in the third pivot mode 30p3, one blocking position 34b in the fourth pivot mode 30p4, and one blocking position 34b in the fully locked mode 30I.

It is emphasized here that features described for the embodiments of figures 1-9 are not restricted for use in these specific embodiments and may be used in combination with other embodiments as well providing the same effects and advantages, for instance according to one of the configurations of figures 10-13, without departing from the scope of the invention.

Figures 14-17 illustrate the provision of a set of hinges 50, namely a set of a guide hinge 50a and a folding-out hinge 50b, being provided to a wing frame assembly 1 according to the invention, in particular, to the preferred embodiment of figures 9a-c. The first and second pivot side 21 p, 22p are in this embodiment adjacent and perpendicular, so that the wing frame assembly 1 forms a tilt-and-turn wing.

The guide hinge 50a is shown in figure 14 when the inner frame is pivoted over the first pivot side 21 , that is, turned, into an opened position. The folding-out hinge 50b is shown in figure 15 when the inner frame is pivoted over the first pivot side 21 , that is, turned, into an opened position. The folding-out hinge 50b is shown in figure 16 when the inner frame is pivoted over the second pivot side 22, that is, tilted, into an opened position. Figure 16a illustrates an intermediate and final position.

The set of hinges 50a, 50b cooperates with the fitting system 30 in a highly preferred manner. The guide hinge 50a and folding out hinge 50b are respectively provided at the in the two corners at the ends of the first pivot side 21 p. Therein the guide hinge is provided in the corner between the first pivot side 21 p, and the second pivot side 22p, that is, in the lower-right corner, and the folding out hinge 50b in the corner at the end of one of the first pivot side 21 p, that is, in the upper-right corner, at the end remote from the corner in which the folding out hinge 50a is provided.

The guide hinge 50a is configured to guide and support pivoting both over the first and second pivot axes 21 p, 22p extending along both of the horizontal and vertical pivot side.

The folding out hinge 50b is configured to guide and support pivoting along the first pivot axis 21 p when the axle member 31 extending there along is in one of its blocking positions 31 b. It is furthermore configured to enable the side 24 of the inner frame 20 opposite the second pivot side 22p to move in the opening direction 245 thereof, that is, away from the outer frame 10 at the associated side of the inner frame 20 and out of the plane of the wing frame assembly 1 , so as to allow the inner frame 20 to pivot over the second pivot axis 3.

For the purpose of guiding and supporting pivoting of the inner frame 20 over the first pivot axis 2, both the guide hinge 50a and the folding out hinge 50b are constructed very similar to the hinge of EP2407621 , employing the same working principle.

The guide hinge 50a and folding out hinge 50b comprise an inner frame guide element 51 , an elongate outer frame guide element 52, and an elongate inner guide link 53 and an elongate outer guide link 54, which are pivotally interconnected and interconnect the inner frame guide element 51 and the outer frame guide element 52. The inner frame guide element 51 and the outer frame guide element 52 are embodied as flat elements. The inner frame guide element 51 of each hinge is integrated in the associated case element 29, embodied as corner piece 29, inside which the axle member 31 rotates. The outer frame guide element 52 is in fact formed by the upper side of the corner piece 29. The outer frame guide element 52 of each hinge 50a, 50b is mounted to the inside surface of the outer frame 10. The guide links 53, 54 are embodied as flat elongate elements, extending with flat sides on top of each other in between the guide elements 51 and 52, with the pivotal

interconnection 55 halfway their lengths. See for instance figure 16a. The guide elements 51 , 52 extend in parallel planes, and are respectively provided to the inner and outer frame 10, 20 such as to face each other when the wing frame assembly 1 is in the closed position. The frame guide elements 51 , 52 extend along opposite sides of the frame assembly 1. The frame guide elements 51 , 52 of the guide hinge 50a extend along the second pivot side 22p, and the frame guide elements 51 , 52 of the folding out hinge 50b extend along the non-pivot side 24 opposed and parallel to the second pivot side 22.

For both the guide hinge 50a and the folding out hinge 50b, the outer guide link 54 is slidably connected to the inner frame guide element 51 , with the sliding direction parallel to the axle member 32, 34 at the respective side 22p, 24. As best seen in figure 14a for the guide hinge 50a, the inner frame guide element 51 comprises an elongate slot 51s, which runs parallel to the axle member 32, while the outer guide link 54 comprises at a sliding end thereof a pin 53s, configured to slide back and forth inside the slot 51s. At a pivoting end thereof, the outer guide link 54 is pivotally connected to the outer guide element 52. The inner guide link is at a sliding end slidably connected to the outer guide element 52 by means of a similar configuration of a slot 53s and a pin 52s, see e.g. figure 14b, and at a pivoting end pivotally connected to the inner guide element 51. The sliding direction is again parallel to the axle member 32 at the respective side 22p, when the wing frame assembly is in the closed position shown in figures 9a-b. Upon turning or tilting the inner frame, the sliding direction becomes more slanted towards the inner frame 20.

During pivoting over the first pivot axis 21 p to move the inner frame 20 from the closed position into an opened position, the sliding action of the sliding ends of the guide links 54 and 53 with respect to the guide elements 52 and 51 , respectively, and the simultaneous mutual pivoting of the guide links 54 and 53, which therein move away from a mutually aligned position, alike a scissors that opens, establishes the guiding and supporting of the pivoting movement. In particular, the dimensioning, relative positioning and mutual attuning of the pivot points and sliding trajectories is such as to allow pivoting between the closed and opened positions, for example over an annular range of approximately 90°.

The skilled person will acknowledge from the above description that multiple mechanically analogous solutions and kinematic inversions from the above arrangement are possible to provide a similar functionality. For example, the inner and outer guide link 53, 54 may be interchanged. A guide link may comprise a slot and a guide element a pin to accomplish the slidable connection, or the other way around. To guide and support pivoting of the inner frame 10 over the second pivot axis 22p, the guide hinge 50a and folding out hinge 50b comprise a number of features in addition to the hinge of EP2407621 , which does not provide this functionality.

Firstly, in the guide hinge 50a, the pivoting connection between the pivoting end of the outer guide link 54 and the inner guide element 51 is embodied as a combination of an inwards protrusion 54p of the outer guide link 54, and a corresponding indentation of the inner guide element 51 which encloses the protrusion 54p, such that it pivots within the indentation 51 p around a pivot point. The protrusion 54p and indentation 51 p are at least mutually pivotable over an angular range within planes perpendicular to the first pivot axis 21 p, corresponding to the range of opening positions allowed when pivoting over the first pivot axis 21 p, e.g. 90°. Furthermore, the protrusion 51 p and indentation 51 p are also in planes perpendicular to the second pivot axis 22p at least partially circular, and mutually pivotable over an angular range corresponding to the range of opening positions allowed when pivoting over the second pivot axis 3, e.g. between 5-20°. The protrusion is to that end being shaped like a pin with a rounded head in the shape of a ball, alike the protrusion 53p of figure 16a, and the indentation 51 p as an adjoining bowl-shaped hole, such as to form a ball-and-socket joint. This is not visible in the figures, but may be envisaged from figures 14a-b. At the same time, a spacing between the outer guide link 54 and the outer guide element 52 is such as to allow for the pivoting of the inner frame 20 around the second pivot axis 3 as well.

Secondly, turning now to figures 15a-c and 16a-b showing the folding-out hinge 50b, and in particular to figure 16a, in the folding-out hinge 50b, the connection of the pivoting end of the inner guide link 53 with the inner frame guide element 51 is embodied as a combination of an inwards protrusion 53p of the inner guide link 53, and a corresponding inwards indentation 51 p of the inner guide element 51 inside which the protrusion 53p pivots, in a way similar to the combination in the guide hinge 50a. However, in the folding-out hinge 50b, the connection only allows pivoting around the first pivot axis 2 when the fitting system 30 is in the first pivot mode 30p1 , and allows the protrusion 53p to slide within and out of the indentation 51 p in the direction opposed to the opening direction 245 of the side 24 opposed to the second pivot side 22p, when pivoting around the second pivot axis 3 in the second pivot mode 30p2 of the fitting system 30. To that end, the indentation 51 p is formed as an elongate slot 51 p, extending from the pivot point in a direction substantially opposed to the opening direction 245 of the inner frame 20 when pivoting around the second pivot axis 3. When the fitting system 30 is in the first pivot mode 30p1 , a pin 56, shown in figure 15c, is positioned in the indentation 51 p behind the protrusion 53p, such as to form-lock the protrusion 53p at the pivot point, thereby preventing it to move inside the indentation 51 p in the direction substantially opposing the opening direction 235. The pin 56 is fixed to the end of the axle member 34 at the side 24 opposed to the second pivot side 22p, namely to the rotary transmission 36 thereof in the form of a bevel gear 36, thereof, such that rotation of the axle member 34 in or out the position thereof corresponding first pivot mode 30p1 makes the pin 56 rotate into and out of the indentation 51 p, respectively.

In this manner, the inner and outer guide link 53 and 54 together function as a tilt opening stay, alike the tilt opening stay 14 of the first embodiment of figures 1-8, when the fitting system is in the second pivot mode 30p2.

In figure 17, it is shown that the outer guide element 52 of each hinge 50a, 50b in this embodiment forms part of a squared corner plate with slotted holes, which are aligned with corresponding holes in the outer frame 10, so that screws may be inserted therein to secure the outer guide element 52 to the outer frame 10. This enables that the positioning of the respective hinge 50a, 50b with respect to the outer frame 10 is adjusted slightly, in the order of several millimetres, e.g. up to 5 millimetres, depending on the size of the frame. In the views of the figures, the adjusting corresponds to shifting the outer guide element 52 to the left or the right, after loosening the bolts. By the adjustment of the positioning of the hinges the relative positioning of the inner frame with respect to the outer frame may be attuned to optimally facilitate the interaction there between through the multi-mode fitting system.

LIST OF REFERENCE NUMERALS:

1 multi-position wing frame assembly

2 first pivot axis

3 second pivot axis

4 third pivot axis

5 fourth pivot axis

y _t tilting angle

10 stationary outer frame of 1

11 rectangular opening

12 portion of 10, e.g. a shoulder, e.g. a head part of a blocking element,

12s radially inward surface of 12

12c connection part of blocking element

13 indentation in 10

14 tilt opening stay of 10

15 slide element of 14

16 retainer element for 10 16e engaging portion of 16

17 filling plate element for 10

17s securing spring of 17

18 stepped rotational filling plate element for 10

19 extrusion profile for 10

19s extrusion profile supplement of 19

20 pivotal inner frame of 1

20c pivotal inner frame 20 in a closed position thereof

20p1 pivotal inner frame 20 in an opened position thereof while pivoting about 2a

20p2 pivotal inner frame 20 in an opened position thereof while pivoting about 2b

20p3 pivotal inner frame 20 in an opened position thereof while pivoting about 2c

20p4 pivotal inner frame 20 in an opened position thereof while pivoting about 2c

20v pivotal inner frame 20 in a ventilation position thereof

21 p first pivot side of 20

215 opening direction of 21 p

22p second pivot side of 20

225 opening direction of 22p

23 third side of 20

23p third pivot side of 20

235 opening direction of 23(p)

24 fourth side of 20

24p fourth pivot side of 20

245 opening direction of 24(p)

25 shoulder of 20

25s radially inward surface of 25

27 corner region of 20

28 extrusion profile for 20

29 case elements of 20, e.g. corner piece

29o opening of 29

30 multi-mode fitting system of 1

30I multi-mode fitting system 30 in its fully locked mode

30p1 multi-mode fitting system 30 in its first pivot mode

30p2 multi-mode fitting system 30 in its second pivot mode

30p3 multi-mode fitting system 30 in its third pivot mode

30p4 multi-mode fitting system 30 in its fourth pivot mode 31 multi-position axle member associated with 21 p

31 b multi-position axle member 31 in a blocking position thereof

31 r multi-position axle member 31 in a releasing position thereof

31 e end of 31

31 Q rotation axis of 31

32 multi-position axle member associated with 22p

32b multi-position axle member 32 in a blocking position thereof

32r multi-position axle member 32 in a releasing position thereof

32e end of 32

32c curved claw element of 32

32Q rotation axis of 32

33 multi-position axle member associated with 23(p)

33b multi-position axle member 33 in a blocking position thereof

33r multi-position axle member 33 in a releasing position thereof

33e end of 33

33Q rotation axis of 33

34 multi-position axle member associated with 24(p)

34b multi-position axle member 34 in a blocking position thereof

34r multi-position axle member 34 in a releasing position thereof

34e end of 34

34Q rotation axis of 34

35 drive axle member

35b drive axle member 35 in a blocking position thereof

35r drive axle member 35 in a releasing position thereof

35I drive axle member 35 in its position corresponding with 30I

35p1 drive axle member 35 in its position corresponding with 30p1

35p2 drive axle member 35 in its position corresponding with 30p2

35p3 drive axle member 35 in its position corresponding with 30p3

35p4 drive axle member 35 in its position corresponding with 30p4

35e end of 35

35i radial indentation of 35

35Q rotation axis of 35

36 rotary transmission between 31 , 32, 33, 34, 35, e.g. a bevel gear 36a aligner corner element of 36

37 locking portion of 31 , 32, 33, 34, 35

37c curved face part of 37

37f flat face part of 37 37e end of 37

37o circle of which 37c forms part

37r radial indentation of 37

37s radially extending surface 37s of 37

38 locking chamber

38w wall of the locking chamber

39 metal strip of 14

39w mushroom-shaped element of 14

41 selector device, e.g. embodied as a handle

411 selector device 41 in its position corresponding with 30I

41 p1 selector device 41 in its position corresponding with 30p1

41 p2 selector device 41 in its position corresponding with 30p2

41 p3 selector device 41 in its position corresponding with 30p3

41 p4 selector device 41 in its position corresponding with 30p4

42 handle transmission of 41

43 handle shaft of 41

43I handle shaft 43 in its position corresponding with 30I

43p1 handle shaft 43 in its position corresponding with 30p1

43p2 handle shaft 43 in its position corresponding with 30p2

43p3 handle shaft 43 in its position corresponding with 30p3

43p4 handle shaft 43 in its position corresponding with 30p4

44 open-and-lock system

45 spring of 44

46 ring member of 44

47 pin of 44

48 arm of 44

49 indented disc of 44

49I indentation of indented disc of 44 corresponding to handle position 411

49p1 indentation of indented disc of 44 corresponding to handle position 41 p1

49p2 indentation of indented disc of 44 corresponding to handle position 41 p2

49v indentation of indented disc of 44 corresponding to handle position 41 v

50 hinge

50a guide hinge of 50

50b folding out hinge of 50

51 inner frame guide element of 50a, 50b

51 p inwards indentation of 51 , e.g. elongate slot of 51 51s slot of 51

52 outer frame guide element of 50a, 50b

52s pin of 52

53 inner guide link of 50a, 50b

53p inwards protrusion of 53

53s slot of 53

54 outer guide link of 50a, 50b

54p protrusion of 54

55 pivotal interconnection between 53, 54

56 pin for moving into and out of 51 p

90 wing member