TRAY COMPRISING A CARDBOARD BASE FOR FOOD DISPLAY

Abstract

Tray (21) having a cardboard base (1) and at least a first wall (3a) and a second wall (3b) formed by a first layer and a second layer each having at least one hole (6), the second layer of the first wall having a first planar projection (12), forming an angle with the first wall of between 30? and 90? arranged to retain a first embossing of a lid, the second layer of the second wall having a second planar projection forming an angle with the second wall of between 30? and 90? to retain a second embossing of the lid.

Claims

1. A tray comprising a cardboard base arranged to engage a lid, said base comprising a basal wall provided with at least three walls which extend predominantly upwards from the basal wall, at least a first wall and a second wall of the three walls being made of a first layer of cardboard and a second layer of cardboard, said first layer of cardboard facing the inside of the tray and said second layer of cardboard facing the outside of said tray, said second layer of said first wall and said second wall comprising at least a first longitudinal through hole and a second longitudinal through hole, respectively, said first longitudinal through hole of the first wall being delimited by the cardboard of the second layer of the first wall forming at least a top edge and a bottom edge between which the first hole is located, said top edge being positioned at a distance H1 measured from a horizontal plane passing through a straight portion of an upper edge of said first wall and along the height of said first wall and said second longitudinal through hole of the second layer of the second wall being delimited by the cardboard of the second wall forming at least a top edge and a bottom edge between which the second hole is located, said top edge being positioned at a distance H2 measured from a horizontal plane passing through a straight portion of an upper edge of said second wall and along the height of said second wall, said second layer of said first wall having a first substantially planar projection positioned above said first hole, having a height h1, measured between said top edge and a fold line predominantly forming said upper edge of said first wall, measured along the height of said projection, said height h1 being greater than said height H1, said first projection forming an angle with said first wall of less than or equal to 90? and greater than 30? arranged to retain a first embossing present on an inner surface of a first downwardly extending side wall of a cover wall of a lid, said second layer of said second wall having a second substantially planar projection, positioned above said second longitudinal through hole, having a height h2, measured between said top edge and a fold line predominantly forming said upper edge of said second wall, measured along the height of said projection, said height h2 being greater than said height H2, said second projection forming an angle with said second wall of less than or equal to 90? and greater than 30? arranged to retain a second embossing present on an inner surface of a second downwardly extending side wall of a cover wall of a lid.

2. The tray according to claim 1, wherein said basal wall provided with at least three walls is a basal wall provided with 3, 4, 6, 8, 10 or 12 walls.

3. The tray according to claim 1, wherein said basal wall is provided with 4 walls and wherein said first wall and said second wall face each other.

4. The tray according to claim 3, wherein said second layer of said first wall has a third longitudinal through hole delimited by the cardboard of the second layer of the first wall forming at least a top edge and a bottom edge between which the third hole is located, said top edge being positioned at a distance H3 measured from a horizontal plane passing through a straight portion of an upper edge of said first wall and along the height of said first wall, said second layer of said first wall having a third substantially planar projection, positioned above said third hole, having a height h3, measured between said top edge and a fold line predominantly forming said upper edge of said first wall, measured along the height of said third projection, said height h3 being greater than said height H3 said third projection forming an angle with said first wall of less than or equal to 90? and greater than 30?.

5. The tray according to claim 4, wherein said second layer of said second wall has a fourth longitudinal through hole delimited by the cardboard of the second layer of the second wall forming at least a top edge and a bottom edge between which the fourth hole is located, said top edge being positioned at a distance H4 measured from a horizontal plane passing through a straight portion of an upper edge of said second wall and along the height of said second wall, said second layer of said second wall having a fourth substantially planar projection, positioned above said fourth longitudinal through hole, having a height h4, measured between said top edge and a fold line predominantly forming said upper edge of said second wall, measured along the height of said fourth projection, said height h4 being greater than said height H4, said fourth projection forming an angle with said second wall of less than or equal to 90? and greater than 30?.

6. The tray according to claim 1, wherein said first wall and said second wall, respectively, have a first and a second length L, and wherein said first longitudinal through hole of the first wall has a first length l and said second longitudinal through hole of the second wall has a second length l, said tray being characterised in that the proportion between the first length L of said first wall and the first length l of said first longitudinal through hole present on the first wall is between 5 and 30 and in that the proportion between the second length L of said second wall and the second length l of said second longitudinal through hole present on the second wall is between 5 and 30.

7. The tray according to claim 1, wherein the upper edge of said first wall has at least a first inner deflection forming the top edge of said first projection.

8. The tray according to claim 1, wherein the upper edge of said second wall has at least a second inner deflection forming the top edge of said second projection.

9. An assembly formed by a tray according to claim 1, the assembly further comprising a lid made of a cover wall from which at least three side walls extend downwards, including the first and second side wall, said first side wall and said second side wall each having an inner surface respectively provided with a first and a second embossing projecting towards the inside of said lid arranged to fit, respectively, under the first projection of the first wall of the tray and under the second projection of the second wall of the tray.

10. The assembly according to claim 9, wherein said first embossing has a depth P1 of between 0.8 and 5 mm and wherein said second embossing has a depth P2 of between 0.8 and 5 mm.

11. A blank of a cardboard tray having a basal section provided with at least three sides, including at least a first and a second side, a first section of first wall adjacent to the basal section, along said first side, a second section of first wall adjacent to the first section of first wall, a first fold line comprising at least one straight portion, arranged to form an upper edge of said first wall of said tray, said second section of said first wall having a first longitudinal recess of length L1, arranged to form a first hole of the first wall, said first fold line further having a first deflection in said first section of first wall, the length of which is greater than the length L1, and a first section of second wall adjacent to the basal section, along said second side, a second section of second wall adjacent to the first section of second wall, a second fold line comprising at least one straight portion, arranged to form an upper edge of said second wall of said tray, said second section of said second wall having a second longitudinal recess of length L2, arranged to form a second hole of the second wall, said second fold line further having a second deflection in said first section of second wall, the length of which is greater than the length L2, said sides of said basal section being fold lines formed by grooving and/or scoring and/or kiss-cutting of the cardboard.

12. The blank according to claim 11, further comprising a first section of third wall adjacent to the basal section, along a third side, a second section of third wall adjacent to the first section of third wall, a third fold line between the first and the second section of third wall, arranged to form an upper edge of a third wall of said tray, said second section of third wall having an edge opposite the third fold line and a first and a second transverse edge facing each other, the blank further comprising a first tab section extending from said first transverse edge and a second tab section extending from said second transverse edge of the second section of the third wall, said first tab section having a linked edge and a free edge, said linked edge being connected to said first transverse edge of the second section of the third wall and forming a fold line, formed by grooving and/or scoring and/or kiss-cutting, said first tab section further having a third edge and a fourth edge, said third edge and said fourth edge being spaced apart by a distance D1 along the linked edge and by a distance D2 along the free edge, the distance D1 being greater than the distance D2, said first tab section being arranged to be introduced between the first section and the second section of the first wall, said second tab section having a linked edge and a free edge, said linked edge being connected to said second transverse edge of the second section of the third wall and forming a fold line, formed by grooving and/or scoring and/or kiss-cutting, said second tab section further having a third edge and a fourth edge, said third edge and said fourth edge being spaced apart by a distance D3 along the linked edge and by a distance D4 along the free edge, the distance D3 being greater than the distance D4, said second tab section being arranged to be introduced between the first section and the second section of the second wall.

13. The blank according to claim 12, wherein the basal section comprises 4 sides, said first and second sides being opposite each other, and comprising a fourth side opposite to the third side, said blank further comprising a first section of fourth wall adjacent to the basal section, along a fourth side, a second section of fourth wall adjacent to the first section of fourth wall, a fourth fold line between the first and the second section of fourth wall, arranged to form an upper edge of a fourth wall of said tray, said second section of fourth wall having an edge opposite the fourth fold line and a first and a second transverse edge facing each other, the blank further comprising a third tab section extending from said first transverse edge and a fourth tab section extending from said second transverse edge of the second section of the fourth wall, said third tab section having a linked edge and a free edge, said linked edge being connected to said first transverse edge of the second section of the fourth wall and forming a fold line, formed by grooving and/or scoring and/or kiss-cutting, said third tab section further having a third edge and a fourth edge, said third edge and said fourth edge being spaced apart by a distance D5 along the linked edge and by a distance D6 along the free edge, the distance D5 being greater than the distance D6, said third tab section being arranged to be introduced between the first section and the second section of the first wall, said fourth tab section having a linked edge and a free edge, said linked edge being connected to said second transverse edge of the second section of the fourth wall and forming a fold line, formed by grooving and/or scoring and/or kiss-cutting, said fourth tab section further having a third edge and a fourth edge, said third edge and said fourth edge being spaced apart by a distance D7 along the linked edge and by a distance D8 along the free edge, the distance D7 being greater than the distance D8, said fourth tab section being arranged to be introduced between the first section and the second section of the second wall.

14. The blank according to claim 11, wherein the basal section comprises 4 sides, said first and second sides being opposite each other and comprising a fourth side opposite a third side, the blank comprising a first section of third wall adjacent to the basal section, along a third side, a second section of third wall adjacent to the first section of third wall, a third fold line between the first and the second section of third wall, arranged to form an upper edge of a third wall of said tray, said second section of third wall having an edge opposite the third fold line and a first and a second transverse edge facing each other, said blank further comprising a first section of fourth wall adjacent to the basal section, along a fourth side, a second section of fourth wall adjacent to the first section of fourth wall, a fourth fold line between the first and second section of fourth wall, arranged to form an upper edge of a fourth wall of said tray, said second section of fourth wall having an edge opposite the fourth fold line and a first and second transverse edge facing each other, the blank further comprising a first section of securing means, between the first section of the first wall and the first section of the fourth wall, a second section of securing means, between the first section of the first wall and the first section of the third wall, a third section of securing means between the first section of the second wall and the first section of the fourth wall, and a fourth section of securing means, between the first section of the second wall and the first section of the third wall.

15. The blank according to claim 11, wherein said first deflection has a first segment A extending from the first fold line towards the basal section, a second segment B substantially parallel to the first fold line and a third segment C extending from the second segment B and joining the first fold line.

16. The blank according to claim 11, wherein said second deflection has a first segment A extending from the second fold line towards the basal section, a second segment B substantially parallel to the second fold line and a third segment C extending from the second segment B and joining the second fold line.

17. The blank according to claim 11, wherein said first fold line has a guideline E passing through the straight portion of the first fold line and wherein said first recess has a point closest to said guideline E, the distance between the closest point and said guideline E, measured transversally along said second section of first wall is H1, whereas the distance between the same point closest to the guideline E of said first recess and the furthest point of the deflection is h1 and is greater than H1.

18. The blank according to claim 11, wherein said second fold line has a guideline (F) passing through the straight portion of the second fold line and wherein said second recess has a point closest to said guideline (F), the distance between the closest point and said guideline (F), measured transversally along said second section of second wall, is H2, whereas the distance between the same point closest to the guideline of said second recess and the furthest point of the deflection is h2 and is greater than H2.

19. The blank according to claim 11, wherein said second section of said first wall having a third longitudinal recess of length L3, arranged to form a third hole of the first wall, said first fold line further having a third deflection in said first section of first wall, the length of which is greater than the length L3.

20. The blank according to claim 11, wherein said second section of said second wall has a fourth longitudinal recess of length L4, arranged to form a fourth hole of the second wall, said second fold line further has a fourth deflection in said first section of second wall, the length of which is greater than the length L4.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0067] In the drawings, FIG. 1 is a perspective view of the cardboard tray according to the present invention.

[0068] FIG. 2 is a top view of the lid of the assembly according to the present invention.

[0069] FIG. 3 is a side view of the lid of the assembly according to the present invention.

[0070] FIG. 4 is a cross-sectional view along the line A-A shown in FIG. 3 of the lid of the assembly according to the present invention.

[0071] FIG. 5 is a perspective view of the lid according to the present invention.

[0072] FIG. 6 is a top view of the tray blank according to the present invention.

[0073] FIG. 7 is an enlarged view of a portion of FIG. 6.

[0074] FIG. 8 is a cross-sectional view along a cross-sectional line of the first wall, taken from the middle of the first projection 12.

DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EMBODIMENTS

[0075] In the figures, the same or like items bear the same references.

[0076] As can be seen in FIG. 1, the tray according to the present invention comprises a cardboard base 1 arranged to engage a lid (not shown). The base 1 comprises a basal wall 2 provided with four walls 3a, 3b, 3c, 3d which extend predominantly upwards from the basal wall 2.

[0077] In the embodiment shown in FIG. 1, all the walls 3a, 3b, 3c, 3d are formed by a first layer 4 of cardboard and a second layer 5 of cardboard. However, it is only required that at least the first wall and the second wall are formed by a first layer of cardboard and a second layer of cardboard.

[0078] The first layer 4 of cardboard faces the inside of the tray and said second layer 5 of cardboard is facing the outside of said tray. The second layer 5 of said first wall 3a and said second wall 3b comprises at least a first longitudinal through hole 6 and a second longitudinal through hole (not visible), respectively. The first longitudinal through hole 6 of the first wall 3a is delimited by the cardboard of the second layer 5 of the first wall 3a forming at least one top edge 7 and one bottom edge 8 between which the first hole 6 is located. Said top edge 7 is positioned at a distance H1 measured from a horizontal plane P passing through a straight portion of an upper edge 9 of said first wall 3a and along the height 10 of said first wall 3a.

[0079] The second longitudinal through hole of the second layer 5 of the second wall 3b is delimited by the cardboard of the second wall 3b forming at least one top edge and one bottom edge between which the second hole is located. The top edge (not shown) is positioned at a distance H2 measured from a horizontal plane passing through a straight portion of an upper edge of said second wall 3b and along the height 11 of said second wall 3b. The second layer 5 of said first wall 3a has a first substantially planar projection 12, positioned above said first hole 6, having a height h1, measured between said top edge 7 and a fold line 13 predominantly forming said upper edge 9 of said first wall 3a measured along the height of said projection 12.

[0080] The height h1 is greater than said height H1. The first projection 12 forming an angle ? (see FIG. 8) with said first wall 3a of less than or equal to 90? and greater than 30? is arranged to retain a first embossing 15 (see FIGS. 2, 3, 4 and 5) present on an inner surface of a first downwardly extending side wall 16a of a cover wall 17 of a lid 18.

[0081] The second layer 5 of said second wall 3b has a second substantially planar projection (not visible) which is positioned above said second longitudinal through hole (not visible), having a height h2, measured between said top edge and a fold line predominantly forming said upper edge of said second wall, measured along the height of said projection. The height h2 is greater than said height H2, said second projection forming an angle with said second wall of less than or equal to 90? and greater than 30?, arranged to retain a second embossing 15 present on an inner surface of a second downwardly extending side wall 16b of a cover wall 17 of a lid 18.

[0082] Preferably, according to the present invention, said first wall 3a and said second wall 3b respectively have a first and a second length L, and wherein said first longitudinal through hole 6 of the first wall 3a has a first length l and said second longitudinal through hole of the second wall 3b has a second length l, said tray being characterised in that the proportion between the first length L of said first wall 3a and the first length l of said first longitudinal through hole 6 present on the first wall 3a is between 9 and 11, preferably between 9.5 and 10.5, more particularly between 9.8 and 10.2 and in that the proportion between the second length L of said second wall 3b and the second length l of said second longitudinal through hole present on the second wall 3b is between 9 and 11, preferably between 9.5 and 10.5, more particularly between 9.8 and 10.2.

[0083] According to the present invention, the upper edge 9 of said first wall 3a has at least a first inner deflection 19 forming the top edge of said first projection 12.

[0084] As can be seen in FIGS. 2, 3, 4 and 5, the lid 18 is formed by a cover wall 17 from which four side walls 16a, 16b, 16c, 16d extend downwards, facing each other in pairs, said first side wall 16a and said second side wall 16b each having an inner surface respectively provided with a first and a second embossing 15 projecting towards the inside of said lid 18 arranged to fit respectively under the first projection 12 of the first wall 3a of the tray and under the second projection of the second wall of the tray.

[0085] At least the first 16a and second side walls 16b have a shoulder 14 of a width x, so that the cover wall 17 has a smaller section than the section of basal wall 2 of the tray. Therefore, the lid 18 has a cross-section that enlarges towards the bottom, and the shoulder 14 creates a rim that is arranged to rest on the edges 9 of the side walls of the tray, enabling it to rest on an area of the tray that is resistant to collapse. The embossings 15 on the first and second side walls of the lid 16a, 16b, beyond the rim formed by the shoulder 14 starting from the cover wall 17, are then made in the lid portion which surrounds the side walls of the tray.

[0086] More particularly, according to the present invention, said first embossing has a depth P1 of between 0.8 and 5 mm, preferably between 1 and 3 mm, preferably 2 mm, and wherein said second embossing has a depth P2 of between 0.8 and 5 mm, preferably between 1 and 3 mm, preferably 2 mm.

[0087] FIG. 6 shows the blank 20 of a cardboard tray 21 having a basal section 22 provided with at least a first 24 and a second side 23, a first section 25 of first wall 3a adjacent to the basal section 22, along said first edge 24, a second section 26 of first wall 3a adjacent to the first section 25 of first wall 3a, a first fold line 27 comprising at least one straight portion 28, arranged to form an upper edge 9 of said first wall 3a of said tray 21.

[0088] The second section 26 of said first wall 3a having a first longitudinal recess 29 of length L1, arranged to form the first hole 6 of the first wall 3a, said first fold line 27 further having a first deflection 30 in said first section 25 of first wall 3a, the length T1 of which is greater than the length L1, and a first section 31 of second wall 3b adjacent to the basal section 22, along said second side 23, a second section 32 of second wall 3b adjacent to the first section 31 of second wall 3b, a second fold line 33 comprising at least one straight portion 34, arranged to form an upper edge 35 of said second wall 3b of said tray 21.

[0089] The second section 32 of said second wall 3b having a second longitudinal recess 36 of length L2, arranged to form a second hole of the second wall 3b, said second fold line 33 further having a second deflection 37 in said first section 31 of second wall 3b, the length T2 of which is greater than the length L2, said sides 23, 24 of said basal section 22 being fold lines formed by grooving and/or scoring and/or kiss-cutting of the cardboard.

[0090] The blank 20 of a cardboard tray 21 further comprises a first section 38 of third wall 3c adjacent to the basal section 22, along a third side 40, a second section 39 of third wall 3c adjacent to the first section 38 of third wall 3c, a third fold line 41 between the first 38 and the second 39 section of third wall 3c, arranged to form an upper edge of a third wall 3c of said tray 21.

[0091] The second section 39 of third wall 3c has an edge 42 opposite the third fold line 41 and a first 43 and a second transverse edge 44 facing each other. The blank further comprises a first tab section 45 extending from said first transverse edge 43 and a second tab section 46 extending from said second transverse edge 44 of the second section 39 of the third wall 3c.

[0092] The first tab section 45 has a linked edge 47 and a free edge 48, said linked edge 47 being connected to said first transverse edge 43 of the second section 39 of the third wall 3c and forming a fold line, formed by grooving and/or scoring and/or kiss-cutting.

[0093] The first tab section 45 further has a third edge 49 and a fourth edge 50, said third edge 49 and said fourth edge 50 being spaced apart by a distance D1 along the linked edge and by a distance D2 along the free edge, the distance D1 being greater than the distance D2, said first tab section 45 being arranged to be introduced between the first section 25 and the second section 26 of the first wall 3a.

[0094] The second tab section 46 has a linked edge 51 and a free edge 52, said linked edge 51 being connected to said second transverse edge 44 of the second section 39 of the third wall 3c and forming a fold line, formed by grooving and/or scoring and/or kiss-cutting.

[0095] The second tab section 46 further has a third edge 53 and a fourth edge 54, said third edge 53 and said fourth edge 54 being spaced apart by a distance D3 along the linked edge 51 and by a distance D4 along the free edge 52, the distance D3 being greater than the distance D4, said second tab section 46 being arranged to be introduced between the first section 31 and the second section 32 of the second wall 3b.

[0096] The blank 21 of a cardboard tray according to the present invention further comprises a first section 55 of fourth wall 3d adjacent to the basal section 22, along a fourth side 61, a second section 56 of fourth wall 3d adjacent to the first section 55 of fourth wall 3d, a fourth fold line 57 between the first 55 and the second section 56 of fourth wall 3d, arranged to form an upper edge of a fourth wall 3d of said tray 21.

[0097] The second section 56 of fourth wall 3d has an edge 58 opposite the fourth fold line 57 and a first 73 and a second transverse edge 62 facing each other. The blank further comprises a third tab section 60 extending from said first transverse edge 73 and a fourth tab section 59 extending from said second transverse edge 62 of the second section 56 of the fourth wall 3d.

[0098] The third tab section 60 has a linked edge 63 and a free edge 64, said linked edge 63 being connected to said first transverse edge 73 of the second section 56 of the fourth wall 3d and forming a fold line, formed by grooving and/or scoring and/or kiss-cutting.

[0099] The third tab section 60 further has a third edge 65 and a fourth edge 66, said third edge 65 and said fourth edge 66 being spaced apart by a distance D5 along the linked edge and by a distance D6 along the free edge, the distance D5 being greater than the distance D6, said third tab section 60 being arranged to be introduced between the first section 25 and the second section 26 of the first wall 3a.

[0100] The fourth tab section 59 has a linked edge 67 and a free edge 68, said linked edge 67 being connected to said second transverse edge 62 of the second section 56 of the fourth wall 3d and forming a fold line, formed by grooving and/or scoring and/or kiss-cutting.

[0101] The fourth tab section 59 further has a third edge 69 and a fourth edge 70, said third edge 69 and said fourth edge 70 being spaced apart by a distance D7 along the linked edge 67 and by a distance D8 along the free edge 68, the distance D7 being greater than the distance D8.

[0102] The fourth tab section 59 is arranged to be introduced between the first section 31 and the second section 32 of the second wall 3b.

[0103] The first deflection 30 has a first segment A extending from the first fold line 27 of the basal section 22, a second segment B substantially parallel to the first fold line 27 and a third segment C extending from the second segment B and joining the first fold line 27.

[0104] The second deflection 37 has a first segment A extending from the second fold line 33 towards the basal section 22, a second segment B substantially parallel to the second fold line 33 and a third segment C extending from the second segment B and joining the second fold line 33.

[0105] The third deflection 72 has a first segment A extending from the first fold line 27 towards the basal section 22, a second segment B substantially parallel to the first fold line 27 and a third segment C extending from the second segment B and joining the first fold line 27.

[0106] The fourth deflection 71 has a first segment A extending from the second fold line 33 towards the basal section 22, a second segment B substantially parallel to the second fold line 33 and a third segment C extending from the second segment B and joining the second fold line 33.

[0107] As can be seen in FIG. 7, in the blank shown, said first fold line 28 has a guideline E passing through the straight portion 28 of the first fold line 27 and wherein said first recess 29 has a point closest to said guideline E, the distance between the closest point and said guideline E, measured transversally along said second section 26 of first wall 3a is H1 whereas the distance between the same point closest to the guideline of said first recess 29 and the furthest point of the deflection is h1 and is greater than H1.

[0108] It is to be understood that the present invention is in no way limited to the embodiments described above and that modifications may be made without departing from the scope of the appended claims.

[0109] For example, it is envisaged for the purposes of the present invention, in a particular embodiment, that all the walls extending from the basal wall comprise at least one longitudinal through hole.

[0110] In a particular embodiment, said first layer of cardboard and said second layer of cardboard of a wall are substantially identical in length.

[0111] In a particular embodiment, said first layer of cardboard and said second layer of cardboard of a wall have different lengths, for example the length of the first layer is greater than the length of the second layer, for example by a factor of 1.2, a factor of 1.5, a factor of 2 or a factor of 3.

[0112] A folding line may be made by a grooving and/or scoring and/or kiss-cutting step.

[0113] In a particular embodiment, the wall or walls that do not have a longitudinal through hole has or have a single layer of cardboard. In this embodiment, the tab sections may be located on the walls comprising one or more longitudinal through holes or on the wall section that does not have a longitudinal through hole.

[0114] In a particular embodiment, the walls are secured together by bellows. The non-recessed portions of the blank present at the intersection of the walls are folded and glued to one of the adjacent walls.

[0115] Thus, while there have shown and described and pointed out fundamental novel features of the invention as applied to a preferred embodiment thereof, it will be understood that various omissions and substitutions and changes in the form and details of the devices illustrated, and in their operation, may be made by those skilled in the art without departing from the spirit of the invention. For example, it is expressly intended that all combinations of those elements and/or method steps which perform substantially the same function in substantially the same way to achieve the same results are within the scope of the invention. Moreover, it should be recognized that structures and/or elements and/or method steps shown and/or described in connection with any disclosed form or embodiment of the invention may be incorporated in any other disclosed or described or suggested form or embodiment as a general matter of design choice. It is the intention, therefore, to be limited only as indicated by the scope of the claims appended hereto.