Patent Grant
11933335
Embodiments of the present invention relate to panels configured to be locked together with a mechanical locking device. The panels may be floorboards to be locked together to obtain a floor product, or panels that may be assembled and locked together to obtain a furniture product, such as a bookshelf, a cupboard, a wardrobe, a box, a drawer, or a furniture component and may thereafter be dismantled. The mechanical locking device may comprise a flexible tongue.
A furniture product provided with a mechanical locking device is known in the art, as evidenced by WO2015/038059. The furniture product comprises a first panel connected perpendicular to a second panel by a mechanical locking device comprising a flexible tongue in an insertion groove.
The above description of various known aspects is the applicant's characterization of such, and is not an admission that any of the above description is considered as prior art.
Embodiments of the present invention address a need to provide panels that can be assembled and dismantled.
It is an object of certain aspects of the present invention to provide an improvement over the above-described techniques and known art; particularly, to achieve a set that could be dismantled/disassembled after assembly without damaging the mechanical locking device, such that the set yet again could be assembled.
It is an object of at least certain embodiments and aspects of the present invention to provide an improvement over the above-described techniques and known art.
A further object of at least certain aspects of the present invention is to facilitate assembling of panels configured to be assembled without the need of using any tools.
A further object of at least certain aspects of the present invention is to facilitate disassembling of panels configured to be assembled.
A further object of at least certain aspects of the present invention is to facilitate assembling and disassembling of panels configured to be assembled with a locking device that is easy to manufacture and to use.
A further object of at least certain aspects of the present invention is to facilitate a method of disassembling assembled panels.
A further object of at least certain aspects of the present invention is to facilitate assembling of panels configured to be assembled with a locking device that is easy to use and install and which reduces the risk of incorrect installation thereof.
A further object of at least certain aspects of the present invention is to facilitate assembling of panels configured to be assembled in a more stable and aesthetic way.
At least some of these and other objects and advantages that will be apparent from the description have been achieved by a set comprising a first panel, a second panel and a mechanical locking device for locking the first panel to the second panel, wherein the first panel comprises a first edge surface and a first panel surface and the second panel comprises a second edge surface and a second panel surface, characterized in that the mechanical locking device comprises an insertion groove at the second edge surface, a flexible tongue positioned in the insertion groove and an edge tongue comprising a tongue groove, that the flexible tongue comprises a first locking surface and a second locking surface, that the first locking surface is configured to cooperate with the tongue groove for locking of the first panel to the second panel in a first direction when the flexible tongue is positioned in the insertion groove in a first orientation, and that the second locking surface of the flexible tongue is configured to cooperate with the tongue groove for a locking of the first panel to the second panel in a first direction when the flexible tongue is positioned in the insertion groove in a second orientation.
The first locking surface and the second locking surface may be essentially symmetrically positioned on the flexible tongue.
An angle between the first and second locking surface may be within the range of about 90° to about 180°, preferably within the range of about 150° to about 175°, or preferably about 158°.
The flexible tongue may comprise a guiding surface configured to cooperate with the edge tongue during a displacement of the first panel relative to the second panel.
The guiding surface may in a first end be connected to the first locking surface and in a second end be connected to the second locking surface.
The guiding surface may have a curved shape.
The guiding surface may have the shape of a circular segment.
The curved shape of the guiding surface may have a radius between the first and second locking surfaces within the range of about 0.5 mm to about 3 mm, preferably within the range of 1 mm to 2 mm, or preferably about 1.5 mm.
The flexible tongue may have a thickness T and the curved shape of the guiding surface may have a radius between the first and second locking surfaces within the range of about 0.2×T to 1.2×T or about 0.4×T to about 0.8×T, or 0.6×T.
The guiding surface may be configured to cooperate with a curved shape surface of a disassembling tool, wherein the disassembling tool preferably has a circular cross section.
The flexible tongue may have a support surface positioned opposite to the guiding surface, wherein the support surface may have a curved shape with a radius within the range of about 25 mm to about 50 mm, preferably within the range of 30 mm to 45 mm, or preferably about 37 mm.
The curved shape of the support surface may have a radius that is smaller than a radius of a bottom surface of the insertion groove.
The first or second direction for locking of the first panel to the second panel may be parallel and/or perpendicular to the second panel surface.
The edge tongue may be a rod-shaped element at the first edge surface and at a third edge surface of the first panel and the mechanical locking device may comprise a first element groove at the second panel surface and a second element groove at a third panel surface of the second panel, wherein the rod-shaped element may comprise the tongue groove and may be configured to be inserted into the first or second element groove, wherein the first element groove may extend from the second panel surface to the insertion groove and the second element groove may extend from the third panel surface to the insertion groove, the first locking surface of the flexible tongue may be configured to cooperate with the tongue groove for a locking of the first panel to the second panel in a first direction which is perpendicular to the first panel surface when it is inserted into the first element groove and the first edge surface is arranged against the first panel surface; and the second locking surface of the flexible tongue may be configured to cooperate with the tongue groove for locking of the first panel to the second panel in a first direction which is perpendicular to the first panel surface when it is inserted into the second element groove and the third edge surface is arranged against the third panel surface.
A first crosscut of the rod-shaped element, in a plane parallel to the first or second panel surface, may have a circular shape or a rectangular shape.
The mechanical locking device may be configured to automatically lock the first panel to the second panel when the rod-shaped element is inserted into the first or second element groove and the first edge surface is arranged against the first panel surface and/or the third edge surface is arranged against the second panel surface.
The rod-shaped element may have a longitudinal shape with a length direction which may be parallel to the first panel surface of the first panel.
In one aspect the locking surface and the adjacent sides of the flexible tongue may preferably have edges that are rounded, i.e., have a radius, which results in that the tongue is easier to insert and move in the insertion groove, also reducing the risk for fibers falling off from the insertion groove when the flexible tongue is inserted and moved in the insertion groove.
According to one aspect there is provided a flexible tongue comprising a first locking surface and a second locking surface. The first locking surface is configured to cooperate with a tongue groove for locking of a first panel to a second panel in a first direction when the flexible tongue is positioned in an insertion groove in a first orientation. The second locking surface of the flexible tongue is configured to cooperate with the tongue groove for a locking of the first panel to the second panel in a first direction when the flexible tongue is positioned in the insertion groove in a second orientation.
The first locking surface and the second locking surface may be essentially symmetrically positioned on the flexible tongue.
An angle between the first and second locking surface may be within the range of about 90° to about 180°, preferably within the range of about 150° to about 175°, or preferably about 158°.
The flexible tongue may comprise a guiding surface.
The guiding surface may in a first end be connected to the first locking surface and in a second end be connected to the second locking surface.
The guiding surface may have a curved shape.
The guiding surface may have the shape of a circular segment.
The curved shape of the guiding surface may have a radius between the first and second locking surfaces within the range of about 0.5 mm to about 3 mm, preferably within the range of 1 mm to 2 mm, or preferably about 1.5 mm.
The flexible tongue may have a thickness T and the curved shape of the guiding surface may have a radius between the first and second locking surfaces within the range of about 0.2×T to 1.2×T or about 0.4×T to about 0.8×T, or 0.6×T.
According to an aspect the core of the first panel and/or of the second panel may be a wood-based core, preferably made of MDF, HDF, OSB, WPC, plywood, or particleboard. The core may also be a plastic core comprising thermosetting plastic or thermoplastic e.g., vinyl, PVC, PU or PET. The plastic core may comprise fillers.
The first panel and/or the second panel may also be of solid wood.
The second panel may also be of metal, such as sheet metal.
The first panel and/or the second panel may be provided with a decorative layer, such as a foil or a veneer, on one or more surfaces.
These and other aspects, features, and advantages of which embodiments of the invention are capable of, will be apparent and elucidated from the following description of embodiments and aspects of the present invention, reference being made to the accompanying drawings, in which
Specific embodiments of the invention will now be described with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. The terminology used in the detailed description of the embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, like numbers refer to like elements.
The terminology used herein is for the purpose of describing particular aspects of the disclosure only, and is not intended to limit the disclosure. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be noted that the word “comprising” does not necessarily exclude the presence of other elements or steps than those listed and the words “a” or “an” preceding an element do not exclude the presence of a plurality of such elements. It should further be noted that any reference signs do not limit the scope of the claims, that the example aspects may be implemented at least in part by means of both hardware and software, and that several “means”, “units” or “devices” may be represented by the same item of hardware.
The different aspects, alternatives and embodiments of the invention disclosed herein can be combined with one or more of the other aspects, alternatives and embodiments described herein. Two or more aspects can be combined.
A first embodiment of the invention is shown, e.g., in
The first panel 1 and the second panel 2 are preferably panels for a furniture product and may be a part of a frame of a furniture product.
For a furniture product, the set is preferably configured for locking the first panel 1 to the second panel 2 with the first panel surface 12 perpendicular or essentially perpendicular to the second panel surface 22.
The first panel 1 and the second panel 2 may also be floorboards, as illustrated in
An embodiment of the flexible tongue 4 is shown in
The second part may comprise a first bevel 65 which configured to cooperate with the rod-shaped element 8 during assembling and a second bevel 64 which is configured to cooperate with the recess for the locking.
The flexible tongue may comprise a flexible material to enable compression and a displacement of the flexible tongue in the edge groove during assembling.
The flexible tongue may comprise an element which is flexible to enable compression and a displacement of the flexible tongue in the edge groove during assembling and another element which is less flexible in order to improve the locking strength.
A part of the curved surface of the flexible tongue 6 may be configured to be displaced against a surface, such as a cylindrical surface, of the edge groove 5.
The first edge surface 12 may comprise two or more of said rod shaped element and the second panel surface 3 may comprise two or more of said insertion groove 7, preferably arranged linearly, wherein each of the rod-shaped elements is configured to be inserted into one of the insertion grooves.
The first element groove 7 may be formed in the second panel surface 22 and in a core of the second panel 2.
The second panel surface 22 may comprise a decorative layer and the first element groove 7 may extend though the decorative layer.
The first element groove 7 may be formed by mechanical cutting, such as drilling.
An edge element 13, such as an edge band, is preferably attached to the second edge surface 21 for covering the insertion groove 3 and for reinforcing the second edge surface 21. The edge element 13 may be glued to the second edge surface 21 or attached by a mechanical locking device, which may comprise a part that protrudes from the edge element and is configured to be inserted into the insertion groove 3. The part may be attached to the insertion groove 3 by friction. The edge element 13 is in
Embodiments are shown in
The flexible tongue 4 may comprise a guiding surface 103 configured to cooperate with the edge tongue during a displacement of the first panel 1 relative to the second panel 2.
The guiding surface 103 in a first end may be connected to the first locking surface 101 and in a second end may be connected to the second locking surface 102.
The guiding surface 103 may have a curved shape.
The guiding surface 103 may have the shape of a circular segment.
The curved shape of the guiding surface 103 may have a radius between the first 101 and second 102 locking surfaces within the range of about 0.5 mm to about 3 mm, preferably within the range of 1 mm to 2 mm, or preferably about 1.5 mm.
The flexible tongue 4 may have a thickness T and the curved shape of the guiding surface 103 may have a radius between the first 101 and second 102 locking surfaces within the range of about 0.2×T to 1.2×T or about 0.4×T to about 0.8×T, or 0.6×T.
The guiding surface 103 may be configured to cooperate with a curved shape surface of a disassembling tool 91, wherein the disassembling tool may have a circular cross section, as shown in
The guiding surface 103 may be configured to cooperate with a disassembling tool 91, wherein the disassembling tool may have a triangular cross section, as shown in
The flexible tongue 4 may have a support surface 104 positioned opposite to the guiding surface 103, wherein the support surface 104 may have a curved shape with a radius within the range of about 25 mm to about 50 mm, preferably within the range of 30 mm to 45 mm, or preferably about 37 mm.
The curved shape of the support surface 104 may have a radius R which is smaller or the same as a radius of a bottom surface 44 of the insertion groove 3, as illustrated in
The flexible tongue 4 may comprise a bendable part 61, preferably a first bendable part and a second bendable part. The flexible tongue 4 preferably comprises a recess 63 at each of said bendable part. An advantage with this embodiment of the flexible tongue is that a stronger spring force may be obtained which may provide a stronger locking. A disadvantage for some embodiments of the second panel is that the size of the insertion groove 3 may have to be larger which may weaken the second edge surface 21 of the second panel 2.
The flexible tongue may comprise a side 106, with a beveled or rounded shape. The side 106 may be configured to guide the insertion tool 91 during insertion into the tongue groove 9, see
The flexible tongue may comprise a protruding friction element 107 on the first and/or second bendable part 61. The size of the friction element 107 does not have to be the same on the first and second bendable part, but the size of the friction element 107 may be bigger on one side, which facilitates the movement of the tongue 4 sideways in the insertion groove 3.
The first edge surface 11 may comprise two or more of said rod-shaped element 6 and the second panel surface 22 may comprise two or more of said first element groove 7, preferably arranged linearly, wherein each of the rod-shaped elements 6 is configured to be inserted into one of the first element grooves 7.
A locking of the first panel 1 to the second panel 2 in a second direction which is perpendicular to the first panel surface 12 may be obtained by cooperating locking surfaces between the first element groove 7 and the rod-shaped element 6.
A locking of the first panel 1 to the second panel 2 in a third direction which is perpendicular to the first direction and the second direction surface may be obtained by cooperating locking surfaces between the first element groove 7 and the rod-shaped element 6.
A second crosscut of the first element groove 7, in a plane parallel to the second panel surface 22, preferably has a shape that matches a first crosscut of the rod-shaped element 6, in a plane parallel to the second panel surface 22. An advantage of this may be that an improved locking of the first panel 1 to the second panel 2 in the second direction is obtained and/or an improved locking of the first panel 1 to the second panel 2 in a third direction is obtained.
The first element groove 7 may comprise a bottom-ended groove, such as a bottom ended drill hole, comprising a bottom surface 43 which is positioned at a distance from the insertion groove 3.
The first element groove 7 may have a first part on a first side of the insertion groove 3 and a second part on a second side of the insertion groove 3, wherein the second part comprises a bottom surface 43 and side walls 71, 72, wherein, in a locked position, the rod-shaped element 6 passes through the first part of the first element groove 7, through the insertion groove 3 and into the second part of the first element groove 7.
The rod-shaped element 6 may be configured to cooperate, for the locking in the second direction, with the side walls 71, 72 of the second part of the first element groove 7.
The rod-shaped element 6 may be configured to cooperate, in a locked position, with the bottom surface 43, or may be configured not to cooperate, in a locked position, with the bottom surface, i.e., leaving a gap between the rod-shaped element 6 and the bottom surface 43.
The first part may comprise side walls 73, 74, wherein the rod-shaped element 6 may be configured to cooperate, for the locking in the second direction, with side walls 73, 74 of the first part.
The sidewalls may comprise material of the core of the second panel 2.
The insertion groove 3 may extend from the second edge surface 21 to the first element groove 7.
The insertion groove 3 may be a bottom-ended groove, comprising a bottom surface 44 which is positioned at a distance from the first element groove 7.
The flexible tongue 4 may be arranged at the bottom surface 44 of the insertion groove 3.
The flexible tongue 4 may be arranged between the tongue groove 9 and the bottom surface 44 of the insertion groove 3 in the locked position.
The rod-shaped element 6 may be configured to be attached in an attachment groove 45 in the first edge surface 11.
The rod-shaped element 6 may be configured to be glued in the attachment groove 45 in the first edge surface 11.
The rod-shaped element 6 may be configured to be locked in the attachment groove 45 by a friction connection or by a mechanically connection, such as threads or by a locking element, such as a barb.
The second edge surface 21 may be essentially perpendicular to the second panel surface 22.
An embodiment of the invention is shown in
The first element groove 7 may be formed in the second panel surface 22 and in a core of the second panel 2.
The second panel surface 22 may comprise a decorative layer and the first element groove 7 may extend though the decorative layer.
The first element groove 7 may be formed by mechanical cutting, such as milling or sawing.
An edge element 13, such as an edge band, is preferably attached to the second edge surface 21 for covering the insertion groove 3 and for enforcing the second edge surface 21. The edge element 13 may be glued to the second edge or attached by a mechanical locking device, which may comprise a part that protrudes from the edge element 13 and is configured to be inserted into the insertion groove 3. The part may be attached to the insertion groove 3 by friction. The edge element 13 is in
In a second embodiment of the present invention, e.g., as shown in
This allows for locking of several panels together, not just as one module, but several modules connected to each other, such as several cubes or rectangular.
As is illustrated in
The first panel 1 and the rod-shaped element 6 of the second embodiment may be identical to the first panel 1 and the rod-shaped element 6, respectively, of the first embodiment.
The features and characteristics as described above for the first element groove 7 also apply to the second element groove 10.
A first crosscut of the rod-shaped element 6, in a plane parallel to the first 22 or second 23 panel surface may have a circular shape or a rectangular shape.
The mechanical locking device may be configured to automatically lock the first panel 1 to the second panel 2 when the rod-shaped element 6 is inserted into the first 7 or second 10 element groove and the first edge surface 11 is arranged against the first panel surface 22 and/or the third edge surface 14 is arranged against the second 23 panel surface.
The rod-shaped element 6 may have a longitudinal shape with a length direction which is parallel to the first panel surface 12 of the first panel 1.
The insertion groove 3 may extend from the second edge surface 21 to the first element groove 7.
The insertion groove 3 may extend from the second edge surface to the second element groove 10.
The insertion groove 3 may comprise a first surface, an opposite second surface and a bottom surface 44 extending between the first surface and the opposite second surface.
The bottom surface 44 may be positioned at a distance from the first 7 and/or second 10 element groove.
The bendable part 61 of the flexible tongue 4 may be arranged at the bottom surface 44 of the insertion groove 3.
The flexible tongue 4 may be arranged at the bottom surface 44 of the insertion groove 3.
The flexible tongue 4 may be arranged between the tongue groove 9 and the bottom surface 44 of the insertion groove 3 in the locked position.
The support surface 104 and a side surface 105 of the flexible tongue 4 preferably have edges that are rounded to reduce the risk of fibers falling off from the insertion groove 3 when the flexible tongue 4 is inserted and moved in the insertion groove 3.
A part of the flexible tongue 4 may be configured to be displaced against a surface of the insertion groove 3, such as the first surface and/or the second surface.
The core of the first panel 1 and/or of the second panel 2 may be a wood-based core, preferably made of MDF, HDF, OSB, WPC, plywood, or particleboard. The core may also be a plastic core comprising thermosetting plastic or thermoplastic e.g., vinyl, PVC, PU or PET. The plastic core may comprise fillers.
The first panel 1 and/or the second panel 2 may also be of solid wood.
The first panel 1 and/or the second panel 2 may be provided with a decorative layer, such as a foil or a veneer, on one or more surfaces.
The flexible tongue 4 according to the present invention enables a locking on both sides of the flexible tongue due to the first 101 and second 102 locking surface. Since the flexible tongue has locking surfaces on both sides, and thus may be symmetric, there risk of the tongue 4 being inserted in the insertion groove 3 in an incorrect way is strongly reduced.
Further, since the edges of the flexible tongue 4 are rounded, the risk of the flexible tongue 4 being stuck in the insertion groove 3 during the insertion of the flexible tongue 4 is reduced.
Further, the flexible tongue 4 according to an embodiment of the present invention enables the use of an essentially circular disassembling tool for disassembling of the panels. Such essentially circular disassembling tools are easier to manufacture with a high precision than rectangular disassembling tools. The circular disassembling tools further have a smaller cross-section than the rectangular ones, which has the advantage that a smaller opening in the panel for the disassembling tool is necessary, resulting in a more stable and aesthetic construction when the panels are mounted.
1. A set comprising a first panel (1), a second panel (2) and a mechanical locking device for locking the first panel (1) to the second panel (2), wherein the first panel (1) comprises a first edge surface (11) and a first panel surface (12) and the second panel (2) comprises a second edge surface (21) and a second panel surface (22), characterized in
that the mechanical locking device comprises an insertion groove (3) at the second edge surface (21), a flexible tongue (4) positioned in the insertion groove (3) and an edge tongue comprising a tongue groove (9),
that the flexible tongue (4) comprises a first locking surface (101) and a second locking surface (102),
that the first locking surface (101) is configured to cooperate with the tongue groove (9) for locking of the first panel (1) to the second panel (2) in a first direction when the flexible tongue (4) is positioned in the insertion groove (3) in a first orientation, and
that the second locking surface (102) of the flexible tongue (4) is configured to cooperate with the tongue groove (9) for a locking of the first panel (1) to the second panel (2) in the first direction when the flexible tongue (4) is positioned in the insertion groove (3) in a second orientation.
2. The set as in embodiment 1, wherein the first locking surface (101) and the second locking surface (102) is essentially symmetrically positioned on the flexible tongue (4).
3. The set as in embodiment 1 or 2, wherein an angle (50) between the first (101) and second (102) locking surface is within the range of about 90° to about 180°, preferably within the range of about 150° to about 175°, or preferably about 158°.
4. The set as in any one of the previous embodiments, wherein the flexible tongue (4) comprises a guiding surface (103) configured to cooperate with the edge tongue during a displacement of the first panel (1) relative to the second panel (2).
5. The set as in embodiment 4, wherein the guiding surface (103) in a first end is connected to the first locking surface (101) and in a second end is connected to the second locking surface (102).
6. The set as in embodiment 4 or 5, wherein the guiding surface (103) has a curved shape.
7. The set as in embodiment 6, wherein the guiding surface (103) has the shape of a circular segment.
8. The set as in embodiment 6 or 7, wherein the curved shape of the guiding surface (103) has a radius between the first (101) and second (102) locking surfaces within the range of about 0.5 mm to about 3 mm, preferably within the range of 1 mm to 2 mm, or preferably
9. The set as in any of embodiments 6 to 8, wherein the flexible tongue has a thickness T and wherein the curved shape of the guiding surface (103) has a radius between the first (101) and second (102) locking surfaces within the range of about 0.2×T to 1.2×T or about 0.4×T to about 0.8×T, or 0.6×T.
10. The set as in any of embodiments 4 to 9, wherein the guiding surface (103) is configured to cooperate with a curved shape surface of a disassembling tool, wherein the disassembling tool preferably has a circular cross section.
11. The set as in any of the previous embodiments, wherein the flexible tongue (4) has a support surface (104) positioned opposite to the guiding surface (103), wherein the support surface (104) has a curved shape with a radius within the range of about 25 mm to about 50 mm, preferably within the range of 30 mm to 45 mm, or preferably about 37 mm.
12. The set as in any of embodiments 6 to 12, wherein the curved shape of the support surface (104) has a radius that is smaller than a radius of a bottom surface (44) of the insertion groove (3).
13. The set as in any of the previous embodiments, wherein the first or second direction for locking of the first panel (1) to the second panel (2) is parallel and/or perpendicular to the second panel surface (22).
14. The set as in any of the previous embodiments, wherein the edge tongue is a rod-shaped element (6) at the first edge surface (11) and at a third edge surface (14) of the first panel (1) and the mechanical locking device comprises a first element groove (7) at the second panel surface (22) and a second element groove (10) at a third panel surface (23) of the second panel (2), wherein the rod-shaped element (6) comprises the tongue groove (9) and is configured to be inserted into the first (7) or second (10) element groove, wherein
the first element groove (7) extends from the second panel surface (22) to the insertion groove (3) and the second element groove (10) extends from the third panel surface (23) to the insertion groove (3),
the first locking surface (101) of the flexible tongue (4) is configured to cooperate with the tongue groove (9) for a locking of the first panel (1) to the second panel (2) in a first direction which is perpendicular to the first panel surface (22) when it is inserted into the first element groove (7) and the first edge surface (11) is arranged against the first panel surface (22); and
the second locking surface (102) of the flexible tongue (4) is configured to cooperate with the tongue groove (9) for locking of the first panel (1) to the second panel (2) in a first direction which is perpendicular to the first panel surface (22) when it is inserted into the second element groove (10) and the third edge surface (14) is arranged against the third panel surface (23).
15. The set as in embodiment 14, wherein a first crosscut of the rod-shaped element (6), in a plane parallel to the first (22) or second (23) panel surface has a circular shape or a rectangular shape.
16. The set as in any of embodiments 14 to 15, wherein the mechanical locking device is configured to automatically lock the first panel (1) to the second panel (2) when the rod-shaped element (6) is inserted into the first (7) or second (10) element groove and the first edge surface (11) is arranged against the first panel surface (22) and/or the third edge surface (14) is arranged against the second (23) panel surface.
17. The set as in any of embodiments 14 to 16, wherein the rod-shaped element (6) has a longitudinal shape with a length direction which is parallel to the first panel surface (12) of the first panel (1).
| Number | Date | Country | Kind |
|---|---|---|---|
| 1850441-5 | Apr 2018 | SE | national |
The present application is a continuation of U.S. application Ser. No. 16/386,874, filed on Apr. 17, 2019, which claims the benefit of Swedish Application No. 1850441-5, filed on 18 Apr. 2018. The entire contents of U.S. application Ser. No. 16/386,874 and Swedish Application No. 1850441-5 are hereby incorporated herein by reference in their entirety.
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| Number | Date | Country | |
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| Parent | 16386874 | Apr 2019 | US |
| Child | 18058037 | US |
