The invention concerns a receptacle comprising a container and a cap, the cap being repeatedly attachable to the container for closure of the receptacle.

Receptacles of this kind are used for many applications including the packaging of beauty products such as mascara. For attaching the cap to the container, multiple systems are known, e.g. profiled threads, a bayonet lock, a swiveling cap in com- bination with snap on, a wire hanger as clip lock, an eccentric handle to compress a sealing, or a bistable snap cover.

The systems mentioned above are complex in shape, are difficult to produce, or need more parts. There is a need for a receptacle which allows attaching the cap to the container in a simple, fast and reliable manner.

This need is satisfied by a receptacle according to claim 1 and in particular by a receptacle comprising a container and a cap, the cap being repeatedly attachable to the container for closure of the receptacle, the cap having a passage having an opening formed therein, the container having a neck for insertion into the passage via the opening of the cap along a longitudinal axis of the receptacle, wherein the opening of the cap has a non-circular shaped inner contour formed complemen tary to a non-circular shaped outer contour of the neck, wherein an inner circumferential surface of the passage and an outer circumferen- tial surface of the neck are formed so that a form-fitting engagement in the axial direction is generable by rotating the cap relative to the container around the longi tudinal axis, and wherein the inner circumferential surface of the passage and the outer circum ferential surface of the neck are formed so that a press-fitting engagement in a radial direction between the inner circumferential surface of the passage and the outer circumferential surface of the neck is generable by rotating the cap relative to the container around the longitudinal axis after the cap is in form-fitting en gagement with the neck.

The invention is based on the idea that the cap and the container are attached to each other by first generating a form-fitting engagement - e.g. similar to a thread - in the axial direction and then generating a press-fitting engagement which - dif ferent to a thread - is generated in a radial direction between the inner circumfer ential surface of the passage and the outer circumferential surface of the neck by rotating a non-circular section of the passage in the cap relative to a non-circular section of the neck of the container.

Embodiments of the receptacle are defined by the dependent claims and de scribed in the following disclosure.

The non-circular shaped inner contour of the cap can extend along a subsection of the passage or along substantially the whole passage. Accordingly, the non circular shaped outer contour of the neck can extend along a subsection of the neck or along substantially the whole neck.

According to an embodiment, the outer circumferential surface of the neck is formed as an outer circumferential surface of a twisted non-circular element; and the inner circumferential surface of the passage is correspondingly formed as an inner circumferential surface of a twisted non-circular pipe, in particular a twisted non-cylindrically shaped pipe that is twisted so that sections of this pipe in a plane perpendicular to the longitudinal axis are non-circular, so that the cap can be at tached onto the neck of the container. In other words, the neck has non-circular shaped cross-sections with constant sizes along the longitudinal axis, but the ori entation of the non-circular cross-sections changes constantly so that points of the surface that are equally distanced from the longitudinal axis of the neck are ar ranged along a helix.

According to a second aspect, a receptacle comprising a container and a cap is provided, wherein the cap being repeatedly attachable to the container for closure of the receptacle, the cap having a passage having an opening formed therein, the container having a neck for insertion into the passage via the opening of the cap along a longitudinal axis of the receptacle, wherein the opening of the cap has a non-circular shaped inner contour formed complementary to a non-circular shaped outer contour of the neck, wherein an outer circumferential surface of the neck is formed as an outer circum ferential surface of a twisted non-circular element; and an inner circumferential surface of the passage is correspondingly formed as an inner circumferential surface of a twisted non-circular pipe so that the cap can be attached onto the neck of the container by rotating the cap relative to the con tainer.

According to an embodiment, the non-circular contour of the neck and/or the pas sage has a symmetrical circumferential shape. The circumferential shape can be mirror-symmetrical, e.g. can have an oval shape. This allows to attach the cap on to the neck starting in two different angular positions. Alternatively, the circumfer ential shape can be rotationally symmetrical, e.g. can be shaped like a hyperbolic polygon, e.g. trigon. This simplifies attaching the cap to the neck because it allows placing the cap onto the neck in, e.g. three, different angular positions.

According to a further embodiment, the inner circumferential surface of the pas sage and the outer circumferential surface of the neck are formed and/or config ured so that by rotating the cap relative to the container around the longitudinal axis, the cap is forced towards the container along the longitudinal axis. This al lows that the cap can be attached onto the neck of the container easily.

In order to generate a press-fitting engagement between the neck of the container and the cap in a radial direction, the inner circumferential surface of the passage can have multiple concave surfaces and the outer circumferential surface of the neck can have corresponding convex circumferential surfaces that allow jamming the cap onto the neck by rotating the cap relative to the neck of the container. In particular, this should be only possible in regular operation when the cap is fully attached onto the neck of the container.

Generally, in order to be able to fairly quickly attach the cap onto the container and detach the cap from the container, the outer circumferential surface of the neck can be formed as an outer circumferential surface of a non-circular element twist ed by 360° or less and the inner circumferential surface of the passage can be correspondingly formed as an inner circumferential surface of a non-circular pipe twisted by 360° or less.

In order to create a quick lock function, i.e. in order to be able to quickly attach the cap onto the container and detach the cap from the container, the outer circumfer ential surface of the neck can be formed as an outer circumferential surface of a non-circular element twisted about 180° and the inner circumferential surface of the passage can be correspondingly formed as an inner circumferential surface of a non-circular pipe twisted about 180°. This allows to fully attach the cap onto the neck of the container by rotating the cap relatively to the neck by about half of a turn. The press-fitting engagement can be generable by proceeding to rotate the cap relative to the neck by 5° to 20° after being fully attached onto the neck. In order to have a smooth outer surface on the neck that can be cleaned easily, the contour of the neck along the longitudinal axis and/or the circumferential direc tion can be continuous.

Furthermore, an even smoother surface can be achieved if a pitch of the contour of the neck along the longitudinal axis and/or the circumferential direction is con tinuous. In particular, the contour of the neck along the longitudinal axis and/or the circumferential direction can be continuous in curvature and gradient. This creates a smooth and easy to clean surface.

In other words, the neck can have a continuous outer peripheral extent in a majori ty of sectional planes perpendicular to the longitudinal axis, in particular in all of its sectional planes. Furthermore, the outer circumference of the neck in these sec tional planes can be formed by non-concentric sections.

Similarly, in order to be able to clean the inner circumferential surface of the pas sage of the cap more easily, the contour of the passage along the longitudinal axis and/or the circumferential direction can be continuous. Furthermore, for the rea sons mentioned above, a pitch of the contour of the passage along the longitudinal axis and/or the circumferential direction can be continuous. In particular, the con tour of the passage along the longitudinal axis and/or the circumferential direction can be continuous in curvature and gradient.

Furthermore, the inner contour of the passage can be continuous in a majority of sectional planes perpendicular to the longitudinal axis, in particular in all of its sec tional planes perpendicular to the longitudinal axis. The inner contour of the pas sage in these sectional planes can be formed by non-concentric sections.

According to an embodiment, the non-circular shaped inner contour of the opening of the cap and/or the non-circular shaped outer contour of the neck is selected from the group of shape members consisting of an oval shape, an elliptical shape, a hyperbolic shape, and a hyperbolic trigon, i.e. a triangle with rounded edges. In general, the non-circular contour preferably is symmetrical and/or does not form any sharp edges.

According to a further embodiment, a ratio of the width to height of the non-circular shaped inner contour of the opening in a plane transverse to the longitudinal axis of the receptacle is selected in the range of: 80-95% dependent on the diameter of the receptacle. In other words, a smallest diameter of the contour is between 0.8 to 0.95 times as long as a longest diameter of the contour.

According to an embodiment, the inner contour of the cap and the outer contour of the neck form a clearance fit when the cap attached onto the neck. In particular the inner contour of the cap is 0.5 % to 2.0 % larger than the outer contour of the neck. In other words, each inner diameter of the passage is 0.5 % to 2.0 % larger than the respective outer diameter of the neck.

According to an embodiment, one or more seals are arranged between the neck and the cap for sealing between the neck and the cap when the cap is installed at the container. The seal is preferably arranged between an inner surface of the neck and the cap, in particular an inner support structure of the cap.

In order to be able to apply content of the container, e.g. a beauty product, more precisely, an applicator can be arranged at the cap. In this case, the seal can be arranged between an inner surface of the neck and a support structure for the ap plicator.

According to an embodiment, the receptacle further comprises a securing device, the securing device configured to provide at least one of an audible click and a tangible resistance when the cap is completely installed at the neck. This securing device can comprise an undulating surface, in particular a plurality of peaks sepa rated by a plurality of valleys. Alternatively, or additionally, the securing device can comprise one or more domes. The securing device can be formed on the inner circumferential surface of the passage and the outer circumferential surface of the neck. The securing device may break through the general continuity of the inner and outer circumferential surfaces as long as they do not disturb the attachability of the cap onto the neck.

The container can have a material stored therein, with said material being a liquid, a paste, or a pourable solid material. In particular, said material can be selected from the group of members consisting of: a beauty product, a cosmetic product, a cleaning product, a skin care product, a medical product, a dental product, a pharmaceutical product, an adhesive, a paint, and a building material. In other words, the container is configured to hold at least one of said materials.

Exemplary embodiments and functions of the present disclosure are described herein in conjunction with the following drawings, showing schematically:

Fig. 1 a perspective view of a receptacle according to the disclosure;

Fig. 2 a detailed view of an interface between a container and a cap of the receptacle of Fig. 1 ;

Fig. 3A a first sectional view of the interface of Fig. 2 in a first plane along a longitudinal axis of the receptacle;

Fig. 3B a second sectional view of the interface of Fig. 2 along the longitudi nal axis of the receptacle in a second plane perpendicular to the first plane shown in Fig. 3A;

Fig. 4A a first state of a concept to generate a press-fitting engagement be tween the container and the cap;

Fig. 4B a second state of the concept to generate a press-fitting engagement between the container and the cap;

Fig. 5A a schematic representation to explain the outer shape of the neck; Fig. 5B a more detailed representation of the outer shape of the neck;

Fig. 6A a side view of the interface between the container and the cap if both objects were transparent showing multiple parallel lines that form the securing device;

Fig. 6B a sectional view of the interface of Fig.6A with multiple grooves formed on an inner circumferential surface of the cap that are repre sented by the lines in Fig. 6A;

Fig.7 a sectional view of the interface of Fig.6A in a plane perpendicular to the longitudinal axis;

Fig. 8 a perspective view of a neck of a container according to a first em bodiment;

Fig. 9A a sectional view of the container of Fig. 8 in a plane perpendicular to the longitudinal axis;

Fig. 9B a top view of the container of Fig. 8;

Fig. 10 a perspective view of a neck of a container according to a second embodiment;

Fig. 11 A a sectional view of the container of Fig. 10 in a plane perpendicular to the longitudinal axis;

Fig. 11 B a top view of the container of Fig. 10;

Fig. 12A a further embodiment of a securing device; and

Fig. 12B another embodiment of a securing device.

Fig. 1 depicts a receptacle 10 with a container 12 and a cap 14. The cap 14 is re peatedly attachable to the container 12 in order to close the receptacle 10. To at tach the cap 14 to the container 12, the cap 14 has a passage 16 extending in a longitudinal axis A of the receptacle 10 with an opening 16a in one of its end re gions. In other words, the cap 14 has a blind hole formed therein. The container 12 has a neck 18 that is configured to be inserted into the passage 16 via the opening 16a. As can be seen e.g. by comparing the sectional views of Figs. 3A and 3B, the passage 16 has an inner circumferential shape along the longitudinal axis, i.e. an inner contour 20, that is non-circular shaped at least over a majority of the length of the passage 16, with the majority of the length being at least 51 % preferably at least 80 % of the length of the passage 16. The non-circular shaped inner contour 20 varies along the longitudinal axis so that points on the contour being equidistant to the longitudinal axis form a helix 21. In other words, the passage 16 has an in ner circumferential surface that is formed as an inner circumferential surface of a twisted non-circular pipe.

Accordingly, the neck 18 has an outer circumferential shape along the longitudinal axis, i.e. an outer contour 22, that is non-circular shaped. The outer contour 22 is shaped complementary to the inner contour 20, to enable the cap 14 to be at tached to the neck 18 by rotating the cap 14 relative to the container 12.

The non-circular shaped outer contour 22 varies along the longitudinal axis so that points on the contour being equidistant to the longitudinal axis A form a helix 23 (see Fig. 5B) having the same pitch or gradient as the helix 21 formed by the inner contour 20. In other words, the neck 18 has an outer circumferential surface that is formed as an outer circumferential surface of a twisted non-circular element.

As can be seen from Fig. 2 and 3A, the outer contour 22 of the neck 18 has a con vex outer surface 22a and the inner contour 20 of the cap 14 in a fully attached state forms a corresponding concave surface 20a. In contrast hereto, as can be seen in Fig. 3B, in a second sectional view, the outer contour 22 of the neck 18 has a concave outer surface 22b and the inner contour 20 of the cap 14 in a fully attached state forms a corresponding convex surface 20b.

The outer contour 22 of the neck 18 comprises a surface which includes both the convex outer surface 22a and the concave outer surface 22b, with a relative posi- tion of the different shapes of the outer contour 22 varying both radially and axially relative to the longitudinal axis A to form an engagement surface 22c that interacts with the inner contour 20 of the cap 14 for attachment of the cap 14. The inner contour 20 has a correspondingly shaped counter engagement surface 20c.

The outer contour 22 of the neck 18 and the corresponding inner contour 20 of the cap 14 allow the cap 14 to be attached to the neck 18 creating a form-fitting en gagement in the axial direction without having a classical thread present.

Next, referring to Fig. 4A and 4B, it is explained how a press-fitting engagement is generated after the cap 14 is fully attached to the neck 18. When the cap 14 is fully attached to the neck 18, the outer circumferential surface of the neck 18 and the inner circumferential surface of the cap 14 face each other with a constant dis tance (see Fig. 4A). In particular, since the outer circumference of the neck 18 and the inner circumference of the cap 14 are non-circular, in this example they are oval, the largest outer diameter of the neck 18 matches the largest inner diameter of the cap 14 regarding its angular orientation and the smallest outer diameter of the neck 18 matches the smallest inner diameter of the cap 14 regarding its angu lar orientation. When the cap 14 is then rotated further relative to the neck 18, the largest outer diameter of the neck 18 is placed at an angular position where the inner diameter of the cap 14 is smaller than the largest outer diameter of the neck 18 (see Fig. 4B). Therefore, the cap 14 and the neck 18 form a press-fitting en gagement with the force caused by the press-fitting engagement being directed generally in a radial direction.

Figs. 5A and 5B depict how the outer contour 22, i.e. the form of the engagement surface 22c, of the neck 18 is formed. Fig. 5A shows how the outer contour 22 would look like if manufactured out of different oval rings 24 with a certain thick ness. A first oval ring 24A would be placed on the bottom. Next, a second, identi cal oval ring 24B would be placed on top of the first oval ring 24A but with an an- gular offset with respect to the longitudinal axis A. The next oval ring 24C is placed on the oval ring 24B with the same angular offset with respect to the longitudinal axis A and so on.

In order to create a continuous outer surface of the neck 18, as can be seen in Fig. 5B, the actual outer contour can be described thereby that oval rings 24 having an infinitesimal small thickness are placed on top of each other with a constant angu lar offset with respect to the longitudinal axis A and the previously and subse quently placed respective oval ring 24. In other words, the outer contour 22 of the neck can be described in that an angular position of each of the oval contours is controlled by a helix 23 that is arranged along the longitudinal axis A of the neck 18.

Alternatively, the continuous outer surface of the neck 18 can be described func tionally as an ellipsoid 22 controlled by a helix 23 extending in the longitudinal di rection A.

It is noted that the general shape of the rings 24 and therefore the contour 22 does not have to be oval, but could have other shapes as well. This results in a continu ous outer surface with points being equidistant to the longitudinal axis A forming the helix 23.

The inner contour 20 of the cap 14 is formed by correspondingly shaped rings hav ing an inner surface shaped complementary to the outer shape of the neck 18, depicted by the oval rings 24.

Figs. 6A to 8 show a structure to form a securing device 26 that interrupts the con tinuity of the outer circumferential surface of the neck 18. The securing device 26 is formed by multiple parallel valleys or grooves 26a arranged at least substantially in parallel to one another or in parallel to one another that are formed on the inner circumferential surface of the cap 14 and a plurality of correspondingly shaped elevations or peaks 26b formed on the outer circumferential surface of the neck 18.

The securing device 26 is configured to provide multiple defined locking positions for the cap 14 relative to the neck 18 with each locking position providing an audi ble click and a tangible resistance when the cap is rotated into said locking posi tion after the cap 14 is fully attached onto the neck 18.

It should be noted that also only one valley or groove 26a could be provided at the inner contour 20 of the cap 14, with also only one correspondingly shaped eleva tion or peak 26b formed on the outer circumferential surface of the neck 18.

In this connection it should be noted that the securing device 26 may comprise one or more valleys or grooves 26a arranged at least substantially in parallel to one another or in parallel to one another at the inner circumferential surface of the cap 14.

It should further be noted that the securing device 26 may comprise one or more elevations or peaks 26b arranged at least substantially in parallel to one another or in parallel to one another the outer circumferential surface of the neck 18.

It should yet further be noted that the securing device 26 may be arranged at least substantially in parallel to at least one of the respective helices 21 , 23.

In Fig. 12A an embodiment of the securing device 26’ is shown which comprises a groove or elevation that extends along a majority of the neck along a helix. On the inner circumferential surface of the cap 14, there is at least one corresponding el evation or groove to form a form-fitting engagement between the cap 14 and the neck 18. Similarly, Fig. 12B shows a further embodiment of the securing device 26”. In this embodiment, the securing device comprises a dome 26” or depression. Further more, the securing device 26” comprises a corresponding depression or dome on the inner circumferential surface of the cap 14. The dome 26” can be brought into engagement with the corresponding depression to form a form-fitting engagement to secure the cap 14 on the neck 18.

In Figs. 8 to 9B, a first embodiment of the neck 18 is shown. As can be seen best in Fig. 9A, the outer circumferential surface or outer contour 22 has an oval cross- sectional shape. While the smallest diameter of the oval shape is 12.5 mm, the largest diameter of the oval shape is 13.5 mm. The measurements can vary de pending on the size of the receptacle 10.

Generally speaking the ratio between the smallest diameter of the oval shape and the largest diameter of the oval shape is selected in the range of 0.9 to 0.96, in particular 0.91 to 0.95, especially of 0.92 to 0.94. In particular, the ratio between the smallest diameter of the oval shape and the largest diameter of the oval shape can be 0.926.

The neck 18 also has an inner circumferential surface 28 which defines an inner cross-sectional shape which is a circular shape. The inner circumferential surface 28 defines a passage 30 that leads to a volume 32 (Fig. 9B) defined by the con tainer 12 to store a product, e.g. a beauty product.

In Figs. 10 to 11 B, a second embodiment of the neck 18 is shown. As can be seen best in Fig. 11 A, the outer circumferential surface has a cross-sectional shape that is - like the embodiment shown in Figs. 8 to 9B - axially symmetrical, but - in con trast to the embodiment shown in Figs. 8 to 9B - has 3 largest outer diameters 34. In particular, the shown neck 18 has a cross sectional shape in the form of a hy- perbolic trigon. This embodiment has the advantage that the cap 14 can be placed on the neck 18 in three different angular positions each being 120° apart from each other making it easier to attach the cap 14 onto the neck 18. As can be seen in Figs. 3A and 3B, the cap 14 further comprises a support struc ture 36 for an applicator (not shown). The support structure 36 extends along the longitudinal axis A of the cap 14 and is partly surrounded by the caps inner circum ferential surface. At the inner circumferential surface 28 of the neck 18, a sealing 38 is located. The sealing 38 is configured to seal against the support structure 36 when the cap 14 is attached to the neck 18 of the container 12.

On attaching the cap 14 to the neck 18, the convex shaped part of the of the en gagement surface 22c engages the concave shaped part of the counter engage ment surface 20c, similarly the concave shaped part of the engagement surface 22c engages the convex shaped part of the counter engagement surface 20c, and by rotating the cap 14 relative to the neck 18 to the cap is attached to the neck 18 of the container 12. On rotating the cap 14 relative to the container 12, the cap not only engages the neck 18 in a form fitting engagement, but also in a press-fitting engagement in a radial direction between the inner circumferential surface of the passage 16 and the outer circumferential surface of the neck 18 to secure the cap 14 at the container 12. Use of a common thread would only produce a form-fitting engagement in the radial direction but no such press-fit.

Reference numerals

10 receptacle

12 container 14 cap

16 passage

18 neck

20 inner contour

21 helix 22 outer contour

23 helix

24 oval rings

26 securing device

28 inner circumferential surface 30 passage

32 volume

34 largest outer diameters

36 support structure

38 sealing

A longitudinal axis