A Cap With a Closure Assembly

TECHNOLOGICAL FIELD

The present invention concerns a cap suitable for fitting onto a container's opening, which comprises a closure assembly that is operational independently of opening and closing of the container.

BACKGROUND ART

References considered to be relevant as background to the presently disclosed subject matter are listed below:

- US 5,983,905

- US 7,226,227

- CN 103169242

- US 4,782,985

- WO 2015/155760

Acknowledgement of the above references herein is not to be inferred as meaning that these are in any way relevant to the patentability of the presently disclosed subject-matter.

BACKGROUND

Caps, e.g. flip-top caps, for various containers are known. At times, such caps may hold mirrors, which are typically located on an external surface of the cap, permitting a user to examine his/her reflection with or without removing the cap from the container. In such an arrangement the size of the mirror is limited to the size of the external surface of the cap, and hence reflection of a limited area of the object to be reflected may be obtained. In addition, once positioned at an outer surface, the mirror is prone to damage and is exposed to external elements, such as dust.

Another arrangement is that of an internal mirror, being positioned at an internal surface of a container's closure flap. Such an arrangement does not permit a user to utilize the mirror without opening the container. Further, in such an arrangement the mirror surface serves also as a sealing element of a container's opening, i.e. without being spaced apart from the container's opening, often resulting in soiling the mirror surface by the container's contents.

GENERAL DESCRIPTION

The present disclosure provides caps comprising a closure assembly, which is designed to permit operational separation between the utilization of the container and utilization of an arrangement of reflective surfaces, such that a user may extract the container's contents independently from the use of the reflective surfaces; the reflective surfaces' arrangement may be used independently, without the need to open the container. When the cap comprises such arrangements, these provide a user with a relatively broad angle of reflection (i.e. a broader viewing field), as well as preserving the reflective surfaces from damage or soiling during use of the container.

Thus, the present disclosure provides such a cap for fitting onto a top portion of a container, as well as a container fitted with such caps.

It should be noted that the present disclosure is not limited to a certain type of container and the cap may be applied to a variety of different types of containers; for example such that contain or may be intended to contain creams, powder, soap, lotion, shampoo, foundation, make-up, etc. A cap suitable to be fitted onto a container that contains or is intended to contain a cosmetic, a personal toiletry composition or a personal care product, is a specific example for a cap of this disclosure.

The container may be of the kind having an opening defined in a top portion thereof that allows extraction of container's content. Such a container may include a neck in which the opening of the container is defined. Such a neck may be of any cross- sectional shape, for example squared, rectangular, oval, circular, etc., and the cap will thus have a matching fitting for such a neck. Examples of such containers are tubes with a screw-type neck portion, a bottle-shaped container, etc. The container may also be one in which the opening is defined by upper sections of the container's walls, or even defined as a rim at the upmost section of the container's walls. The cap may be integral with its' suitable container (e.g. being an integral part of the container or attached to the container in a non-detachable manner, e.g. by adhering or pressure fitting), or may be independent of the container, such that it may be removed from one container and subsequently be fitted onto a similar container. The cap may also be disposable. The cap may be fitted onto the container's top portion by any method known in the art, in a fixed or a removable manner. For example, the cap may be fixedly threaded onto complementary threads in the container's top portion, may be pressure-fitted onto the top portion or even welded onto the top portion. Alternatively, the cap may be removable, i.e. by a rotational or sliding displacement about the top portion, thereby permitting a user to remove the cap in its entirety from the container.

In the text below an arbitrary directionality is used in reference to the cap and various parts thereof. The terms "top", "bottom", "up", "down", "horizontal", "vertical" and any lingual variation thereof, are arbitrarily applied to denote relative directionality of the cap's parts. Consistent therewith the cap to be described includes a vertical direction along a central axis of the cap (that extends between the cap's body and the closure assembly) and a horizontal direction that extends substantially normal to the central axis. "Top", "bottom", "up" (or "upper") and "down", are similarly defined along the central axis of the cap.

In one of its aspects, the present disclosure provides a cap for fitting onto a container's top portion, the cap comprises a cap body having an upper end associated with a closure assembly for sealing an orifice that is defined in said upper end and configured, once the cap body is fitted onto a container, for establishing flow communication with an opening of the container. The closure assembly comprises a first element and a second element, each of the first and second elements having an external face and an internal face. The closure assembly is configured to have (i) a closed state in which the first element seals the orifice and (ii) an open state. The two elements are associated with one another, in some embodiments are hinged to one another, by a main hinge permitting the second element to be angled to an extending angle with respect to the first element between a collapsed state and an extended state; such that in the collapsed state the two elements are fitted one against the other and their internal faces are opposite one another, and in the extended state the two internal faces are exposed. At least one of said first and second elements bears a reflective surface on its internal face.

The orifice, in such arrangements, is formed at the upper end of the cap's body and may be configured to be located coaxially or asymmetrically with the container's opening once the cap is fitted onto the container. The orifice may be of a similar or a smaller cross-sectional dimension compared with the container's opening. For example, for a circular opening and circular orifice, the orifice's diameter may be of similar or smaller size than the diameter of the container's opening.

By some embodiments, the closure assembly may be associated with the upper end by a sliding mechanism that is configured to permit the closure assembly to slidingly displace with respect to said upper end between said open and closed states. Namely, in such an arrangement, the sliding mechanism allows the closure assembly to slide in a predetermined direction, thus disengaging the closure assembly from the orifice to result in said open state, in which the content of the container may be extracted. Sliding of the closure assembly in the opposite direction will case the closure assembly to re-engage the orifice and close the container. The sliding mechanism may be any suitable mechanism known to a person of skill, and this disclosure is not meant to be limited to any specific type of sliding mechanism.

The sliding displacement may be in any predetermined generally linear direction. An exemplary, albeit non-limiting, mechanism permitting such sliding may be obtained by grooves or rails integrally formed with the cap's upper end, along which the closure assembly may be slidingly displaced.

By another embodiment, the closure assembly may be associated with the upper end by a rotation mechanism configured for permitting the closure assembly to rotationally displace with respect to said upper end between said open and closed states. In such an arrangement, the closure assembly may be rotated generally parallel to a plane defined by the cap's upper end, e.g. in a rotational- sliding displacement, to disengage the closure assembly from the orifice. The rotation mechanism and/or rotational-sliding may be any suitable mechanism known to a person of skill, and this disclosure is not meant to be limited to any specific type of rotation mechanism.

By another embodiment, the closure assembly may be associated with the upper end by an secondary hinge. The closure assembly may be displaced about the secondary hinge to assume a first angle with respect to the upper end, e.g. up to about 90°, 120°, 150° or even about 180°.

In another embodiment, the first element is constituted by a primary element and a sealing member, the primary element having a bottom space defined by a bottom skirt portion that accommodates at least a top portion of the sealing member, the sealing member being associated with the upper end for sealing said orifice. In other words, the sealing member may be dimensioned to be at least partially accommodated within a bottom space defined by a bottom skirt portion of a primary element - thus linking between the first element and the sealing member. Such linking enables the sealing member and the first element to be jointly moved between the cap's various states (i.e. when joined, the sealing member and the primary element jointly function and define the first element).

The primary element may be associated with the sealing member by any arrangement permitting selective attaching and detaching from the sealing member. In one possible arrangement, the primary element may be snap-fitted onto the sealing member to jointly define the first element.

In another arrangement, the first element of the closure assembly may comprise an elastic or deformable bottom skirt portion that is dimensioned to snugly accommodate at least a portion of the sealing member. Such an elastic or deformable bottom skirt portion permits the closure assembly to be fitted onto sealing members having various dimensions.

The first element of the closure assembly, in another exemplary arrangement, may comprise a bottom skirt portion having an inner surface configured with friction- increasing texture, bulges or teeth for engaging with an external surface of the sealing member. The bulges or teeth may be formed at least partially circumferentially along the inner surface of the bottom skirt portion. Such texture, bulges or teeth, together with increasing friction between the sealing member and the first element, may also be designed to have a desired directionality, to enable relatively smooth sliding of the first element onto the sealing member when the closure assembly is attached to the sealing member, and cause increased friction or otherwise limit the sliding displacement when detaching the closure assembly from the sealing member. This ensures the closure assembly to be securely fitted onto the sealing member when the cap is in use.

In another arrangement, the terminal end of the first element's bottom skirt portion may include at least one bulge (e.g. at least partially circumferential bulge) that is received within at least one circumferential groove or recess formed on the external surface of the sealing member. Alternatively, the external surface of the sealing member may be formed with at least one bulge (e.g. at least partially circumferential bulge) that is configured to be received within at least one circumferential groove or recess formed at an inner surface of a terminal end of the first element's bottom skirt portion.

The sealing member may be associated with the upper end of the cap by any suitable mechanism that permits sealing and unsealing of the orifice (i.e. that permit the switching between open and closed states of the cap). By one example, the sealing member is hingedly attached to the upper end by an auxiliary hinge.

By another aspect, the present disclosure provides a cap for fitting onto a container's top portion, comprising a cap body having an upper end that is associated with a closure assembly. The closure assembly comprises a first element and a second element, each of the first and second elements having an internal face, the two elements being associated (e.g. hinged by a main hinge) to one another. Such association permits the second element to be angled to an extending angle with respect to the first element between a collapsed state and an extended state; such that in the collapsed state the two elements are fitted one against the other and their internal faces are opposite one another, and in the extended state the internal faces are exposed. The upper end is configured for sealing an orifice that is defined in said first element and is configured, once the cap body is fitted onto a container, for establishing flow communication with an opening of the container; the cap is configured to have (i) a closed state in which the upper end engages the orifice and (ii) an open state in which the upper end is disengaged from the orifice. Namely, in such an arrangement, the orifice is defined in the first element of the closure assembly, and sealing of the orifice is obtained by engaging it with the upper end. For example, the orifice may be positioned at a side wall of the first element.

By some embodiments, the closure assembly may be associated with the upper end of the cap body by a tilting mechanism configured for permitting the closure assembly to tiltingly displace with respect to said upper end between said open and closed states. Namely, in an exemplary arrangement, the upper end of the cap may by constituted by a ring circumferencing the first element of the closure assembly. In the closed state, the first element is at least partially circumferenced by the ring, such that the orifice defined in the side wall of the first element is engaged and sealed by a portion of the ring. Displacing the cap into an open state involves tilting the closure assembly about a tilting axis, for example by pushing the closure assembly downward at a point along its circumference generally opposite to the location of the orifice, thereby causing the closure assembly to tilt about the axis and expose the orifice to permit extraction of the container's content. In such embodiments, the tilting axis may be located about a dimeter of the closure assembly. The tilting mechanism may be any suitable mechanism known to a person of skill, and this disclosure is not meant to be limited to any specific type of tilting mechanism.

By another exemplary arrangement, the upper end may comprise said ring that circumferences the first element of the closure assembly.

In another embodiment, the closure assembly may be associated with the upper end by a vertical biasing arrangement for permitting the closure assembly to vertically displace with respect to said upper end between said open and closed states. Namely, in an exemplary arrangement, the upper end may be constituted by a ring that circumferences the first element, the closure assembly being associated with the ring by a vertical biasing arrangement. In such an arrangement, that in the closed state, the first element is circumferenced by the ring and the closure assembly is held at a bottom vertical position against the biasing force of the biasing arrangement to permit the ring to engage the orifice, and in the open state, the closure assembly is at a top vertical position in which axis the orifice is disengaged from the ring, the closure assembly being biased to the top vertical position by the vertical biasing arrangement.

In another exemplary arrangement, the upper end comprises a ring circumferencing the first element, the closure assembly being associated with the ring by a vertical biasing arrangement.

In a different arrangement, the closure assembly is associated with the upper end of the cap body by a rotation mechanism configured for permitting the closure assembly to rotationally displace with respect to said upper end between said open and closed states. In such an exemplary arrangement, the upper end may be constituted by (or, in some embodiments, comprises) an upwardly-extending wall portion, that circumferences the first element, and having an opening or a gap defined in said wall portion. The closure assembly may be rotationally displaced within the upper end (i.e. within the upwardly-extending wall portion) about a central axis, such that when in the open state, the orifice and the wall's opening (or gap) are aligned, and in the closed state, the orifice and the wall's opening (or gap) are out of alignment.

A similar arrangement is one by which the upwardly-extending wall portion is rotatable about the central axis, while the closure assembly is stationary. In another arrangement both of the upwardly-extending wall and the closure assembly are rotatable one against the other, e.g. about a mutual rotation axis.

The following embodiments may be applicable to any of the aspects disclosed herein.

The first and second elements may be associated one with the other by a hinged association (e.g. by a main hinge). The hinged association permits the second element to be angled with respect to the first element between a collapsed state and an extended state. In the collapsed state the two elements are fitted one against the other and their two internal faces are opposite one another; and in the extended state the internal faces are exposed.

In the extended state, the first and second elements define an extending angle therebetween, in some embodiments between about 45° and 180°or even between about 60 and 150°.

When the closure assembly is associated with the upper end by a secondary hinge, the closure assembly may define an opening angle with respect to the upper end. In some embodiments, the opening angle may be up to about 90°, 120°, 150° or even about 180°. The opening and extending angles may be independently adjusted by the user to permit an extended viewing field in the relevant operational states of the cap.

The secondary hinge may be located at any position along the circumference of the cap with respect to the primary hinge (that hinges the first element to the second element); i.e. the secondary hinge may be adjacent the primary hinge, the hinges may be distant from one another (e.g. positioned at 90° with respect to one another along the circumference), or even opposite one another along the cap's circumference.

In such embodiments, the main hinge and the secondary hinge may be formed at opposite points on the circumference of the closure assembly, i.e. on opposite sides of the closure assembly.

In any of its arrangements and embodiments disclosed herein, the cap can assume any one of four states: (a) a closed and collapsed state, in which the container is sealed and the internal faces of the first and second elements are concealed; (b) an open and collapsed state, in which the first element is disengaged from the upper end to permit extraction of the container's content through the orifice, while the closure assembly is maintained at the collapsed state to conceal the internal face of the first and second elements; (c) a closed and extended state, in which the container is sealed and the internal face of the first and second elements are exposed; and (d) an open and extended state, in which the first element is disengaged from the upper end and both of the internal faces are exposed.

It is of note that, in some embodiments, the closure assembly may be detachably associated with the upper end; namely, the closure assembly may be removed and reattached to the upper end. Such association may be in any suitable means that permits such detachable association.

The first and second elements have each an external face and an internal face. In some embodiments, at least one, at times both, of the internal faces of the first and second elements may bear a reflective surface. The term reflective surface denotes any surface that permits reflection of an image to enable a viewer to view a reflected image. In some embodiments, the reflective surface may be a mirror or a reflective coating. The reflective surfaces may be associated with the internal faces by any means known in the art; for example, but not limited to, gluing, pressure-fitting, etc. The reflective surface may be made of glass, polished metal, a metal coated plastic material, a composition comprising metal flakes or particles, a layered coating comprising layers of metal and plastic, in-mold labeled reflecting film, and others. In some other embodiments, the reflective surfaces may be increasing, i.e. reflecting an increased size of the reflected object, or decreasing.

When mirrors are used, each of the mirrors may, by some embodiments, be independently of planar, concave or convex geometries {i.e. reflecting an increased or decreased size of the reflected object, respectively). In other embodiments, the mirrors have a planar geometry and slanted with respect to the element's internal face.

In cases where the internal face of the first and/or second element are coated by a reflective coating, such a reflective coating may function as a planar mirror, or may be an optical coating that enables increasing a reflected image, increase of the angle of reflection (thus providing a broader reflected view), or decrease thereof.

In order to permit a compact configuration in the closed and collapsed state, each of the internal faces may be slanted with respect to their corresponding external faces. Namely, the internal face of the first element may be slanted in an angle with respect to the external face of the first element; while the internal face of the second element may be slanted in an opposite and complementary angle to the internal face of the first element. When the closure assembly is in the collapsed state, such complementary slanting angles result in substantially parallel external faces, and, therefore, a compact spatial arrangement.

In some embodiments, in the extended state, the main hinge may permit rotation of the second element with respect to the first element to provide an additional degree of freedom of the second element vis-a-vis the first one. This allows the user to further adjust the viewing field as needed to obtain an optimal viewing angle.

Caps of this disclosure may, by some embodiments, be made of a polymeric material (plastic), although they may also be made of other materials, including metal, such as aluminum or stainless steel. When formed of plastic materials, the cap may be manufactured by injection molding techniques known in the art. Suitable, however non- limiting, plastic materials for producing the cap of this disclosure are homopolymers, copolymers, such as for example, block, graft, random and alternating copolymers as well as terpolymers, further including their derivatives, combinations and blends thereof. The polymers may or may not be bio- or environmentally-degradable. Non- limiting examples of such polymers are polyehtylenes, polypropylenes, polypropylene terephthalate, polyphenylene oxide, polystyrene, polyvinyl chloride (PVC), butadiene- styrene block copolymers, butadiene-styrene -butadiene block copolymers, acrylonitrile- butadiene-styrene (ABS), styrene copolymers, etc. The plastic materials used for manufacturing the cap (or any of its elements) may contain, at least in part, recycled plastic material. In some embodiments, the cap comprises recyclable materials; hence the cap may also be recyclable.

In an embodiment, the hinge may be formed of metal or of plastic material, the same of different from the plastic material from which the other parts of the cap are made.

In some embodiments, all elements of the cap (i.e. at least the upper end, the first element and the second element, at times also the cap body) are integrally formed and made of the same material. The term integrally formed or any lingual variation thereof is meant to refer to elements that are seemingly associated one with the other and are, by some embodiments, formed as a unitary construct. An example of such integral forming is an injection molding process or a 3D-printing process, in which the upper end, and the first and second elements are injection molded or printed in a single production process as a complete structure. The reflective surfaces (e.g. mirror(s) and/or reflective coating(s)) may be then added onto the desired surface (e.g. one or more of the internal and/or external surfaces of the first and second elements) by various techniques, such as coating, gluing, in-mold pressure fitting, etc. In other embodiments, the mirror may be applied during manufacture of the cap. For example, injection molding of the cap can be performed within a mold that already includes one or more reflective surfaces (or in another example, the mirror can be printed during 3D printing of the cap).

It is of note that although all of the upper end, first and second elements may have similar cross-sectional shapes (e.g. a polygonal shape, an oval shape, a round shape, or an irregular shape), it is also contemplated that each of these elements, independently, will have a different cross-sectional shape - as long as the functionality of the cap, as described herein, is maintained.

In some embodiments, the cap is associated in a manner known per se with at least one accessory unit, e.g. a light-source (for example a battery-operated light source), a camera, a dental floss container/dispenser, etc. By way of non-limiting example, an accessory unit such as a light source (e.g. powered by a small battery) may be fitted in a manner known per se in the vicinity of the reflecting surface affording better visibility in case of low or ambient light conditions.

In another aspect of this disclosure there is provided a kit comprising at least one container and at least one cap as disclosed herein.

In some embodiments, the kit may comprise at least one cap and a plurality of containers, the cap being configured for detachable association with any of said containers. Namely, a cap may be detachably associated with one container, and then removed and attached to another container in said kit. In this manner, each of the containers in the kit is configured for association with the same cap, thus permitting a single cap to be detachably associated with each of the containers in the kit. As several containers may be interchangeably associated with a single cap, production costs are saved and carbon footprint is reduced.

Another aspect provides for a cap kit. The cap kit comprises a cap body and an assembly unit. The cap body is configured for fitting onto a container's top portion, and comprises an upper end with an orifice defined therein that is configured, once fitted onto a container, for establishing flow communication with an opening of the container, and is associated with a sealing member for sealing said orifice. The assembly unit comprises a primary element and a second element, the primary element of the assembly unit is configured to be detachably associated with said sealing member. The primary element is configured to be detachably associated with said sealing member (by any of the configurations described herein), such that a closure assembly is formed once the primary element and the sealing member are associated one with the other, the closure assembly comprising the second element and a first element constituted by the joint primary element and the sealing member. The primary element and the second element are hinged to one another by a main hinge permitting the second element to be angled to an extending angle with respect to the primary element between a collapsed state and an extended state; such that in the collapsed state the two elements are fitted one against the other and their internal faces are opposite one another, and in the extended state the two internal faces are exposed. The closure assembly, once formed by associating the primary element and the sealing member, is configured such that each of said first and second elements having an external face and an internal face, the closure assembly having (i) a closed state in which the first element seals the orifice and (ii) an open state. At least one of said primary element and the second element bears a reflective surface on its internal face.

In some embodiments, the sealing member may be hingedly attached to the upper end by an auxiliary hinge

BRIEF DESCRIPTION OF THE DRAWINGS

In order to better understand the subject matter that is disclosed herein and to exemplify how it may be carried out in practice, embodiments will now be described, by way of non-limiting example only, with reference to the accompanying drawings, in which:

Fig. 1 is a perspective view of a cap according to an embodiment of this disclosure, in the closed and collapsed state, when the various elements are hinged to one another by an arrangement of hinges.

Fig. 2 is a perspective view of the cap of Fig. 1 in the open and collapsed state.

Fig. 3 is a perspective view of the cap of Fig. 1 in the closed and extended state.

Figs. 4A-4C are perspective views of the cap of Fig. 1 in the open and extended state according to an embodiment of this disclosure. Figs. 5A-5D are perspective views of a cap in its various operative states according to another embodiment of this disclosure, when the various elements are hinged to one another by another arrangement of hinges.

Figs. 6A-6C are perspective views of a cap in its various operative states according to another embodiment of this disclosure, when the upper end is associated with the closure assembly by a sliding mechanism.

Fig. 7 is perspective views of a cap in the open and collapsed state according to another embodiment of this disclosure, when the upper end is associated with the closure assembly by a rotational- sliding mechanism.

Figs. 8A-8C are perspective views of a cap in its various operative states according to another embodiment of this disclosure, when the upper end is associated with the closure assembly by a vertical biasing arrangement.

Figs. 9A-9C are perspective views of a cap in its various operative states according to another embodiment of this disclosure, when the upper end is associated with the closure assembly by a tilting mechanism.

Figs. lOA-lOC are perspective views of a cap in its various operative states according to another embodiment of this disclosure, when the upper end is associated with the closure assembly by a rotation mechanism.

Figs. 11A-11D are perspective views of cap according embodiments of this disclosure, having various cross-sectional shapes.

Figs. 12A-12G show a cap having a closure assembly that is be detachably associated with the upper end of the cap.

DETAILED DESCRIPTION OF EMBODIMENTS

Fig. 1 depicts a cap 100 according to an embodiment of the invention in its closed and collapsed state. The cap comprises a cap body 102, suitable for fitting onto a container's top portion (in this, non-limiting specific embodiment, the top portion is in the form of a container's neck), and a closure assembly, generally designated as 104. The closure assembly comprises a first element 110 and a second element 112, each having an internal face 110A and 112A respectively, and an external face HOB and 112B, respectively. At least one, at times both of the internal faces 110A and 112A bear a reflective surface (e.g. mirror or reflective coating). In addition, at times the external face 112B may also bear a reflective surface. As can better be seen in Fig. 2, in the embodiment depicted in this figure, the closure assembly is associated with an upper end 106 of the cap body 102 via a secondary hinge 108, which permits the closure assembly to displace from a closed state into an open state of the cap. Defined in the upper end is an orifice 114 that is in liquid communication with an opening of the container that is defined by the neck. When in the closed state, the orifice is sealed by protrusion 116 extending from external face HOB.

In Fig. 3, a cap according to an embodiment of the invention can be seen in the closed and extended state. The first and second elements 110,112 are hinged to one another by a main hinge 118, located at the opposite side of the upper end with respect to the location of the secondary hinge 108, which permits angular displacement of element 112 with respect to element 110. Once element 112 is displaced, mirrors which are fixed to each of the internal surfaces 110A and 112A are exposed, such that a user is provided with a broad viewing angle. In this position, the first element 110 engages the orifice 114, preventing extraction of the container's content, while permitting a viewer to independently use the mirror assembly.

Once returned into the collapsed state, shown in Figs. 1 and 2, the internal faces 110A and 112A are fitted one against the other, such that two internal (mirror-bearing) faces are opposite one another, such that the mirrors are not exposed and are thus protected from damage or soiling.

Turning to Figs. 4A-4C, a cap according to an embodiment of the invention can be seen in the open and extended state, in which the mirrors are exposed and the contents of the container may be extracted via orifice 114.

In another embodiment of the invention, the main hinge and the secondary hinge may reside at the same side of the closure assembly.

Figs. 5A-5D depict such a cap, where similar elements to that of Figs. 1-4C were given similar numerals, shifted by 100. Namely, element 100 is similar to element 200, element 102 is similar to element 202, etc.

Fig. 5A depicts a cap 200 in its closed and collapsed state. The cap comprises a body 202, and a closure assembly generally designated as 204. The closure assembly comprises a first element 210 and a second element 212, each having an internal face 210A and 212A respectively, and an external face 210B and 212B, respectively (as can be more clearly seen in Fig. 5D). As seen in Fig. 5B, the closure assembly is associated with an upper end 206 of the cap body via a secondary hinge 208, which permits the closure assembly to displace from a closed state into an open state of the cap. Defined in the upper end is an orifice 214 that is liquid communication with an opening of the container that is defined by the neck. When in the closed state, the orifice is sealed by protrusion 216 extending from external face 210B.

In Fig. 5C, the can be seen in the closed and extended state. The first and second elements 210,212 are hinged to one another by a main hinge 218, positioned close to and slightly above the first hinge 208, such that both hinges 208,218 reside at the same side of the assembly. Second hinge 218 permits angular displacement of element 212 with respect to element 210. Once element 212 is displaced, the mirrors fixed to the internal surfaces 210A and 212A are exposed, such that a user is provided with a broad viewing angle. In this position, the first element 210 engages the orifice 214, preventing extraction of the container's content, while permitting a viewer to use the mirror assembly.

Once returned into the collapsed state, shown in Figs. 5A and 5B, the internal faces 210A and 212A are fitted one against the other, the two internal (mirror-bearing) faces being opposite one another, such that the mirrors are not exposed. In Fig. 5D, the cap is in the open and extended state, in which the mirrors are exposed and the contents of the container may be extracted via orifice 214.

As noted, the association between the closure assembly and the upper end may be via a variety of means, such as those sown in Figs. 6A-10C, that will now be further explained.

Figs. 6A-6C depict a cap according to another embodiment of this disclosure, in which the association between the upper end and the closure assembly is by a sliding mechanism configured for permitting the closure assembly to slidingly displace with respect to the upper end between the open and closed states. Cap 300 comprises upper end 302, and a closure assembly, generally designated as 304. The closure assembly comprises a first element 310 and a second element 312, each having an internal face 310A and 312A respectively, at least one of which, at times both, bears a mirror or a reflective coating. In addition, at times the external face 312B may also bear a mirror or a reflective coating. Defined in the upper end is an orifice 314 that is in liquid communication with an opening of the container onto which the cap is fitted. A cap in the closed and collapsed state is shown in Fig. 6A, in which the orifice defined in the upper end of the cap is sealed by the first element of the closure assembly.

As can better be seen in Fig. 6B, showing the cap in its closed and extended states, the first and second elements 310,312 are hinged to one another by a main hinge 318 that permits angular displacement of the second element with respect to the first element. Once element 312 is displaced, mirrors which are fixed to each of the internal surfaces 310A and 312A (or reflective coating said internal faces) are exposed. In this position, the first element 310 engages the orifice 314, preventing extraction of the container's content, while permitting a viewer to independently use the mirror assembly.

Fig. 6C shows the cap of this disclosure in an open and collapsed state. In this specific embodiment, transition from the closed state to the open state occurs by sliding the closure assembly in a direction of arrow 330, thus exposing orifice 314 and permitting extraction of the container's content. The sliding movement may be facilitated by suitable grooves or tracks (not shown).

In a similar arrangement shown in Fig. 7, the closure assembly may be associated with the upper end of cap 400 by a rotational sliding mechanism about element 420 (not shown) in the direction of arrow 430, thus disengaging the closure arrangement 404 from the upper end 402 in a rotational displacement and exposing the orifice 414.

The orifice need not be necessarily be defined in the upper end. For example, in the non-limiting embodiments shown in Figs. 8A-10C, the orifice may be defined in the first element.

For example, in the embodiment shown in Figs. 8A-8C, cap 500 the orifice 514 is defined in the side wall of the first element, and the upper end is constituted by a ring 502 circumferencing the first element 510. The closure assembly 504 may be associated with ring 502 by a vertical biasing arrangement, e.g. a spring or an elastic element (not shown), such that the closure assembly has a bottom vertical position (shown in Figs. 8A-8B) and a top vertical position (shown in Fig. 8C). In the closed state and collapsed states and in the closed and extended states, shown in Figs. 8A and 8B, respectively, the first element 510 is circumferenced by the ring and the closure assembly 504 is held at the bottom vertical position against the biasing force of the biasing arrangement. In this bottom position, the ring 502 engage the orifice 514, the sealing the container. In the open state shown in Fig. 8C, the closure assembly 504 is at its top vertical position in which the first element 510 protrudes above the ring 502, thus disengaging orifice 514 from the ring. In order to permit ease of use, the closure assembly may be biased to the top vertical position. Thus, pressing downward onto the closure assembly when in the closed state of the cap will cause the closure assembly to move upwards (i.e. vertically) by the biasing force of the vertical biasing arrangement in a pop-up like displacement, thus causing the orifice to disengage from the ring.

A similar association between the upper end and the closure assembly is shown in Figs. 9A-9C. In this embodiment, the upper end is constituted by a ring 602 circumferencing the first element 610. The closure assembly 604 may be associated with ring 602 by a tilting mechanism (e.g. a longitudinal shaft or hinge about the diameter of the closure assembly, not shown), such that in the closed state (shown in Figs. 9A and 9B), the first element 610 is at least partially circumferenced by ring 602 and the ring engages the orifice (the orifice being hidden in Figs. 9A-9B); in the open state (shown in Fig. 9C), the closure assembly is tilted (tiltingly displaced) about tilting axis 620 to disengage orifice 614 from ring 602. Namely, pushing downward onto the cap in the direction of arrow 630, will cause tilting of the closure assembly 604 about tilting axis 620 in the direction of arrow 640 to disengage the first element 610 from the ring 602.

A different type of association between the upper end and the closure assembly may be obtained by a rotational mechanism, as shown in Figs. lOA-lOC.

In Fig. 10A, a cap is shown in the closed and collapsed states. The upper end is constituted by as an upwardly-extending wall portion 702 that at least partially circumferences the first element 710, and has an opening (or a gap) 722 in at least a section thereof. The closure assembly 704 is associated with the upwardly-extending wall portion 702 by a rotation mechanism about axis 720, that permits wall 702 to be axially rotated, as to bring the opening 722 into alignment with orifice 714 that is defined in the first element 710. In this manner, when the orifice 714 and the opening 722 are aligned the cap is its open state (shown in Figs. lOB-lOC), and when a rotation of the wall 702 about axis 720 causes misalignment the orifice 714 and the opening 722 the cap is at its closed state (show in Fig. 10A), i.e. the orifice 714 and the opening 722 are being brought out of alignment. It is of note that while this embodiment is described as having a rotatable wall 702 and a stationary closure assembly 704, it is also contemplated that the wall 702 will be stationary while the closure assembly 704 will rotate about the rotation axis.

As noted above, the various elements of the cap, i.e. the upper end, first and second elements may have various cross-sectional shapes (e.g. a polygonal shape, an oval shape, a round shape, or an irregular shape), as shown in Figs. 11A-11C. As also shown in Fig. 11D, it is also contemplated that each of these elements, independently, will have a different cross-sectional shape - as long as the functionality of the cap, as described herein, is maintained.

As noted, a cap as described herein may be formed from a cap kit that comprises a cap body and an assembly unit, such that the assembly unit is detachably associated with the upper end of the cap body via a sealing member to be described below, as seen in Figs. 12A-12G. In a similar manner, Figs. 12A-12G may also represent a cap according to this disclosure which is assembled from the cap kit as described herein.

The cap 800 comprises a cap body 802, that is associated with a sealing member 804, for example by secondary hinge 806 (better seen in Fig. 12C). The sealing member is configured for sealing the orifice 808 formed in the upper end 810 of the cap body. The primary element 814 of the assembly unit 812 may be configured to be detachably associated with the sealing member 804 when moving the primary element in the direction of arrow 803. In other words, the sealing member may be dimensioned to be at least partially accommodated within a bottom space defined in the primary element, such that when the assembly unit is attached to the sealing member such that it is at least partially accommodated within the bottom space; this forms a link between the primary element 814 and the sealing member 804, such that a first element 815 (in the sense described herein) is structurally and functionally constituted by joining the sealing member and the primary element, and is thus movable between the cap's various states (as seen in Fig. 12C). In other words, when joined, the sealing member and the primary element jointly define and function as the first element (similarly, when the sealing member is joint with the primary element - the sealing member, the primary element and the second element jointly function and define the closure assembly 817). In order to permit accommodation of at least a portion of the sealing member within the primary element, the inner diameter D of a skirt portion 816 of the primary element 814 is slightly larger than the diameter d of the sealing member 804, thus permitting tight fitting of the primary element onto the sealing member (as seen, for example on Figs. 12A-12C).

The association between the primary element 814 and the sealing member 804 may be obtained by various structures and arrangements permitting selective attaching and detaching of the assembly unit from the cap body, and the arrangements described herein are provided as mere exemplary arrangements. A person versed in the art will appreciate that other arrangements may also be suitable, and these are also encompassed by the present disclosure.

In the example of Fig. 12D, the inner surface of a terminal end 820 of the primary element's bottom skirt portion 818 may be provided with at least one at least partially circumferential, inwardly-facing bulge 822 that is received within a circumferential groove or recess 824 formed on the external surface of the sealing member. Associating the primary element with the sealing member in the direction of arrow 803 (seen in Fig. 12A), will cause bulge 822 to be received within groove or recess 824, thus associating between the assembly unit and the cap body via the sealing member. It is to be appreciated, that as also explained hereinabove, that more than one bulge and/or more than one groove or recess may be utilized. As also noted hereinabove, the arrangement may be such that one or more outwardly-extending bulges are formed onto the external surface of the sealing member, while one or more grooves or recesses are formed on the inner surface of the of the terminal end of the primary element's bottom skirt portion.

In the cap of Fig. 12E, the bottom skirt portion 826 of the primary element is elastic or deformable. This permits the skirt portion to accommodate sealing members having various diameters (thus enabling the assembly unit to be fitted onto cap bodies with variously dimensioned sealing members). The better the dimensional fit between dimeters D and d, the smaller vertical distance Z between the sealing member and the primary element will be obtained. In addition, the sealing member may have an external surface having a slanted or generally frustoconical shape (as seen in Fig. 12E), such that the elastic or deformable bottom skirt portion can be more easily fitted onto the sealing member.

It is also appreciated that, regardless if the bottom skirt portion 826 is made of an elastic or deformable material or not, the bottom skirt portion may generally have a frustoconical shape, thus suitable for fitting onto sealing members having various diameters. This enables a user to fit the assembly unit onto various-sized standard caps.

Other exemplary arrangements are those shown in Figs. 12F and 12G, in which the inner surface of the bottom skirt portion 830 of the primary element is provided with a friction-increasing texture, e.g. circumferential teeth 832 and 834, respectively, for engaging with the external surface of the sealing member. In the example of Fig. 12G, the teeth have are angled, such that their angling directionality permits relatively smooth sliding of the primary element onto the sealing member when the assembly unit is attached to the sealing member, and causes increased friction or otherwise limit the sliding displacement when detaching the assembly unit from the sealing member.

EMBODIMENTS

The present disclosure also encompasses embodiment as defined in the following numbered phrases. It should be noted that these numbered embodiments intended to add to this disclosure and is not intended in any way to be limiting.

1. A cap for fitting onto a container's top portion, comprising a cap body having an upper end associated with a closure assembly for sealing an orifice that is defined in said upper end and configured, once the cap body is fitted onto a container, for establishing flow communication with an opening of the container;

the closure assembly comprising a first element and a second element, each of said first and second elements having an external face and an internal face, the closure assembly having (i) a closed state in which the first element seals the orifice and (ii) an open state;

the two elements being hinged to one another by a main hinge permitting the second element to be angled to an extending angle with respect to the first element between a collapsed state and an extended state; such that in the collapsed state the two elements are fitted one against the other and their internal faces are opposite one another, and in the extended state the two internal faces are exposed,

at least one of said first and second elements bears a reflective surface on its internal face. 2. The cap of embodiment 1, wherein the closure assembly is associated with the upper end by a sliding mechanism configured for permitting the closure assembly to slidingly displace with respect to said upper end between said open and closed states.

3. The cap of embodiment 1, wherein the closure assembly is associated with the upper end by a rotational- sliding mechanism configured for permitting the closure assembly to rotationally displace with respect to said upper end between said open and closed states.

4. The cap of embodiment 1, wherein the first element is constituted by a primary element and a sealing member, the primary element having a bottom space defined by a bottom skirt portion that accommodates at least a top portion of the sealing member, the sealing member being associated with the upper end for sealing said orifice.

5. The cap of embodiment 4, wherein the primary element is snap-fitted onto the sealing member to constitute said first element.

6. The cap of embodiment 4, wherein the primary element comprises an elastic or deformable bottom skirt portion that is dimensioned to snugly accommodate at least a portion of the sealing member.

7. The cap of embodiment 4, wherein the primary element comprises a bottom skirt portion having an inner surface configured with friction-increasing texture or bulges for engaging with an external surface of the sealing member.

8. The cap of embodiment 4, wherein the primary element comprises a bottom skirt portion with a terminal bottom end, the terminal bottom end being configured with at least one bulge, and the external surface of the sealing member is formed with at least one circumferential groove or recess configured for receiving said at least one bulge.

9. The cap of embodiment 4, wherein the external surface of the sealing member is formed with at least one bulge, and the primary element comprises a bottom skirt portion with a terminal bottom end having an inner surface that is formed with at least one circumferential groove or recess configured for receiving said at least one.

10. The cap of any one of embodiments 4 to 9, wherein the sealing member is hingedly attached to the upper end by an auxiliary hinge.

11. A cap comprising:

a cap body for fitting onto a container's top portion, the cap body comprising an upper end with an orifice defined therein that is configured, once fitted onto a container, for establishing flow communication with an opening of the container, the upper end being associated with a sealing member for sealing said orifice, and

a closure assembly comprising a first element and a second element, the first element of the closure assembly being configured to be detachably associated with said sealing member, wherein

each of said first and second elements having an external face and an internal face, the closure assembly having (i) a closed state in which the first element seals the orifice and (ii) an open state;

the two elements being hinged to one another by a main hinge permitting the second element to be angled to an extending angle with respect to the first element between a collapsed state and an extended state; such that in the collapsed state the two elements are fitted one against the other and their internal faces are opposite one another, and in the extended state the two internal faces are exposed, and

at least one of said first and second elements bears a reflective surface on its internal face.

12. A cap for fitting onto a container's top portion, comprising a cap body having an upper end that is associated with a closure assembly,

the closure assembly comprising a first element and a second element, each of said first and second elements having an internal face, the two elements being hinged to one another by a hinge permitting the second element to be angled to an extending angle with respect to the first element between a collapsed state and an extended state; such that in the collapsed state the two elements are fitted one against the other and their internal faces are opposite one another, and in the extended state the internal faces are exposed, at least one of said first and second elements bears a reflective surface on its internal face,

the upper end is configured for sealing an orifice that is defined in said first element and is configured, once the cap body is fitted onto a container, for establishing flow communication with an opening of the container,

the cap is configured to have (i) a closed state in which the upper end engages the orifice and (ii) an open state in which the upper end is disengaged from the orifice. 13. The cap of embodiment 12, wherein the closure assembly is associated with the upper end by a tilting mechanism configured for permitting the closure assembly to tiltingly displace with respect to said upper end between said open and closed states.

14. The cap of embodiment 12, wherein the closure assembly is associated with the upper end by a rotation mechanism configured for permitting the closure assembly to rotationally displace with respect to said upper end between said open and closed states.

15. The cap of embodiment 12, wherein the orifice is defined in the side wall of the first element, and the upper end is constituted by a ring circumferencing the first element, such that in the closed state, the first element is at least partially circumferenced by the ring and the ring engages the orifice, and in the open state, the closure assembly is tilted about a tilting axis to disengage the orifice from the ring.

16. The cap of embodiment 15, wherein the tilting axis is about a dimeter of the closure assembly.

17. The cap of embodiment 15, wherein the orifice is defined in the side wall of the first element, and the upper end is constituted by a ring circumferencing the first element, the closure assembly being associated with the ring by a vertical biasing arrangement, such that in the closed state, the first element is circumferenced by the ring and the closure assembly is held at a bottom vertical position against the biasing force of the biasing arrangement to permit the ring to engage the orifice, and in the open state, the closure assembly is at a top vertical position in which the orifice is disengaged from the ring, the closure assembly being biased to the top vertical position by the vertical biasing arrangement.

18. The cap of embodiment 15, wherein the orifice is defined in the side wall of the first element and the upper end is constituted by as an upwardly-extending wall portion that at least partially circumferences the first element, the closure assembly being associated with the upwardly-extending wall portion by a rotation mechanism configured for permitting the closure assembly to rotationally displace with respect to said upwardly-extending wall portion about a central axis between said open and closed states, in the closed state the orifice and the wall's opening being out of alignment, and in the open state the orifice and the wall's opening are aligned.

19. The cap of embodiment 15, wherein the orifice is defined in the side wall of the first element and the upper end is constituted by as an upwardly-extending wall portion that circumferences the first element, the closure assembly being associated with the upwardly-extending wall portion by a rotation mechanism configured for permitting the upwardly-extending wall portion to rotationally displace with respect to the closure assembly about a central axis between said open and closed states, in the closed state the orifice and the wall's opening being out of alignment, and in the open state the orifice and the wall's opening are aligned.

20. A cap for fitting onto a container's top portion, comprising a cap body having an upper end and associated a closure assembly by a tilting mechanism configured for permitting the closure assembly to tiltingly displace with respect to said upper end between said open and closed states,

the closure assembly comprising a first element and a second element, each of said first and second elements having an internal face, the two elements being hinged to one another by a main hinge permitting the second element to be angled to an extending angle with respect to the first element between a collapsed state and an extended state; such that in the collapsed state the two elements are fitted one against the other and their internal faces are opposite one another, and in the extended state the internal faces are exposed,

the upper end is configured for sealing an orifice that is defined in said first element and is in flow communication with an opening of the container to have (i) a closed state in which the upper end engages the orifice and (ii) an open state in which the upper end is disengaged from the orifice,

at least one of said first and second elements bears a reflective surface on its internal face.

21. A cap for fitting onto a container's top portion, comprising a cap body having an upper end and associated a closure assembly a rotation mechanism configured for permitting the closure assembly to rotationally displace with respect to said upper end between said open and closed states,

the closure assembly comprising a first element and a second element, each of said first and second elements having an internal face, the two elements being hinged to one another by a main hinge permitting the second element to be angled to an extending angle with respect to the first element between a collapsed state and an extended state; such that in the collapsed state the two elements are fitted one against the other and their internal faces are opposite one another, and in the extended state the internal faces are exposed, the upper end is configured for sealing an orifice that is defined in said first element and is in flow communication with an opening of the container to have (i) a closed state in which the upper end engages the orifice and (ii) an open state in which the upper end is disengaged from the orifice,

at least one of said first and second elements bears a reflective surface on its internal face.

22. A cap for fitting onto a container's top portion, comprising a cap body having an upper end that is associated with a closure assembly,

the closure assembly comprising a first element and a second element, each of said first and second elements having an internal face, the two elements being hinged to one another by a main hinge permitting the second element to be angled to an extending angle with respect to the first element between a collapsed state and an extended state; such that in the collapsed state the two elements are fitted one against the other and their internal faces are opposite one another, and in the extended state the internal faces are exposed,

the upper end is constituted by a ring circumferencing the first element and is configured for sealing an orifice that is defined in a side wall of said first element and is in flow communication with an opening of the container to have (i) a closed state in which the upper end engages the orifice and (ii) an open state in which the upper end is disengaged from the orifice,

the closure assembly being associated with the ring by a vertical biasing arrangement, such that in the closed state, the first element is circumferenced by the ring and the closure assembly is held at a bottom vertical position against the biasing force of the biasing arrangement to permit the ring to engage the orifice, and in the open state, the closure assembly is at a top vertical position in which the orifice is disengaged from the ring, the closure assembly being biased to the top vertical position by the vertical biasing arrangement, and

at least one of said first and second elements bears a reflective surface on its internal face.

23. The cap of any one of embodiments 1 to 22, wherein the cap is capable of assuming at least the states of: (a) closed and collapsed state; (b) open and collapsed state; (c) closed and extended state; and (d) open and extended state. 24. The cap of any one of embodiments 1 to 23, wherein, in the extended state, the main hinge further permits rotation of the second element with respect to the first element.

25. The cap of any one of embodiments 1 to 24, wherein the main hinge is integrally formed with the first and second elements.

26. The cap of any one of embodiments 1 to 25, wherein the second element has an external face that bears a reflective surface.

27. The cap of any one of embodiments 1 to 26, wherein each of the internal faces bears a reflective surface.

28. The cap of embodiment 26 or 27, wherein said reflective surface is a mirror or a reflective coating.

29. The cap of embodiment 28, wherein said mirror is planar, concave or convex.

30. The cap of embodiment 28, wherein said reflective coating is an optical coating for increasing or decreasing a reflected image and/or increasing or decreasing the angle of reflection.

31. The cap of any one of embodiments 1 to 30, made of a polymeric material.

32. The cap of any one of embodiments 1 to 31, formed by injection molding.

33. The cap of any one of embodiments 1 to 32, wherein the cap body, the first element and the second element are integrally formed.

34. The cap of any one of embodiments 1 to 33, wherein each of the upper end, first element and second element has a cross-sectional shape independently selected from a polygonal shape, an oval shape, a round shape, or an irregular shape.

35. The cap of any one of embodiments 1 to 34, wherein the upper end, first element and second element have similar cross-sectional shapes.

36. The cap of any one of embodiments 1 to 35, wherein each of the internal faces may be slanted with respect to their corresponding external faces, such that when the closure assembly is in the collapsed state, external faces of the first and second elements are substantially parallel one another.

37. The cap of any one of embodiments 1 to 36, being associated with at least one accessory unit.

38. A container associated with the cap of any one of embodiments 1 to 37.

39. The container of embodiment 38, wherein the cap is integrally formed with container. 40. The container of embodiment 38, wherein the cap is detachably associated with the container.

41. A kit comprising at least one container and at least one cap according to any one of embodiments 1 to 37.

42. The kit of embodiment 41, wherein the kit comprises at least one cap and a plurality of containers, the cap being configured for detachable association with any of said containers.

43. A cap kit comprising

a cap body for fitting onto a container's top portion, the cap body comprising an upper end with an orifice defined therein that is configured, once fitted onto a container, for establishing flow communication with an opening of the container, the upper end being associated with a sealing member for sealing said orifice, and

an assembly unit comprising a primary element and a second element, the primary element being configured to be detachably associated with said sealing member, such that a closure assembly is formed once the primary element and the sealing member are associated one with the other, the closure assembly comprising the second element and a first element constituted by the joint primary element and the sealing member, wherein the primary element and the second element being hinged to one another by a hinge permitting the second element to be angled to an extending angle with respect to the primary element between a collapsed state and an extended state; such that in the collapsed state the two elements are fitted one against the other and their internal faces are opposite one another, and in the extended state the two internal faces are exposed, and wherein

the assembly unit is configured such that when the primary element is associated with the sealing member to form said closure assembly, each of said first and second elements having an external face and an internal face, the closure assembly having (i) a closed state in which the first element seals the orifice and (ii) an open state,

at least one of said primary and second elements bears a reflective surface on its internal face. 44. The cap kit of embodiment 43, wherein the sealing member that is dimensioned to be at least partially accommodated within a bottom space defined in the primary element, such that when the primary element is attached to the cap body, the sealing member is at least partially accommodated within said bottom space.

45. The cap kit of embodiment 43 or 44, wherein the primary element is snap-fitted onto the sealing member.

46. The cap kit of embodiment 43 or 44, wherein the primary element comprises an elastic or deformable bottom skirt portion that is dimensioned to snugly accommodate at least a portion of the sealing member.

47. The cap kit of embodiment 43 or 44, wherein the primary element comprises a bottom skirt portion having an inner surface configured with friction-increasing texture, bulges or teeth for engaging with an external surface of the sealing member.

48. The cap kit of embodiment 47, wherein the texture, bulges or teeth have a directionality that enables relatively smooth sliding of the primary element onto the sealing member when the primary element is attached to the sealing member, and cause increased friction or limit the sliding displacement when detaching the primary element from the sealing member.

49. The cap kit of embodiment 43 or 44, wherein the external surface of the sealing member is configured with friction-increasing texture, bulges or teeth for engaging with an inner surface of a bottom skirt portion of the primary element.

50. The cap kit of embodiment 49, wherein the texture, bulges or teeth have a directionality that enables relatively smooth sliding of the primary element onto the sealing member when the closure assembly is attached to the sealing member, and cause increased friction or limit the sliding displacement when detaching the primary element from the sealing member.

51. The cap kit of embodiment 43 or 44, wherein the primary element comprises a bottom skirt portion with a terminal bottom end, the terminal bottom end being configured with at least one bulge, and the external surface of the sealing member is formed with at least one circumferential groove or recess configured for receiving said at least one bulge when the primary element is associated with the sealing member.

52. The cap kit of embodiment 43 or 44, wherein the external surface of the sealing member is formed with at least one bulge, and the primary element comprises a bottom skirt portion with a terminal bottom end having an inner surface that is formed with at least one circumferential groove or recess configured for receiving said at least one bulge when the primary element is associated with the sealing member.

53. The cap kit of any one of embodiments 43 to 52, wherein the sealing member is hingedly attached to the upper end by an auxiliary hinge.