Food container

• US 5,718,368 A
• Filed: 01/25/1996
• Issued: 02/17/1998
• Est. Priority Date: 01/25/1996
• Status: Expired due to Fees

• Current Assignee: Wave Packaging Corporation
• Original Assignee: Boise Cascade Holdings LLC (Madison Dearborn Partners LLC)
• Inventors: Porter, Mark A., Waite, Dale J., Rench, Frederick A., Watanabe, Michael E.
• Primary Examiner(s): Elkins, Gary E.
• Application Number:
  US08/590,393
• Time in Patent Office: 754 Days
• Field of Search: 229/109, 229/110, 229/114, 229/125.27, 229/148, 229/160.2, 229/902, 229/906
• US Class Current: 229/109
• CPC Class Codes: B65D 5/667 Lids in the form of an inverted tray
• CPC Class Codes: B65D 85/66 for jumbo rolls; for rolls of floor covering
• CPC Class Codes: Y10S 229/906 Baked goods

Abstract

A food container consisting of a top and a bottom having obliquely angled side elements is disclosed. The container may be cut from a single blank of container material and formed into a hingedly connected top and bottom. When the top and bottom are open and substantially coplanar the obliquely angled sides permit multiple boxes or containers to be nested within one another for efficient stacking. A preferred embodiment includes tops and bottoms with eight side elements comprising one piece side elements and side elements having overlapping panels. When closed, the top side elements overlap the bottom side elements. The container also includes a locking tongue and opening which receives the tongue. A tab may be provided to assist in moving the tongue to disengage it from the opening.

Claims

1. A food container, comprising:

(a) a top having a top planar surface and a plurality of top side elements, each top side element extending from the top planar surface at an oblique angle and each top side element coupled to two adjacent top side elements at oblique angles, at least one of said top side elements having an opening; and

(b) a bottom having a bottom planar surface and a plurality of bottom side elements, each bottom side element extending from the bottom planar surface at an oblique angle and each bottom side element coupled to two adjacent bottom side elements at oblique angles, at least one of said bottom side elements having a locking tongue; and

(c) the top and bottom lockable by engagement of the at least one tongue and one opening so that the top overlies the bottom, and the top side elements overhang at least some of the bottom side elements.

2. The food container of claim 1 wherein the top has eight top side elements and the bottom has eight bottom side elements.

3. The food container of claim 1 wherein the top has eight top side elements, including rear top side elements and front top side elements diametrically opposed to the rear top side elements, and the bottom has eight bottom side elements, including rear bottom side elements and front bottom side elements diametrically opposed to the rear bottom side elements, and the top is hingedly connected to the bottom at the rear top and bottom side elements, and the opening and tongue are located in respective side elements located adjacent the front top and bottom side elements.

4. The food container of claim 1 wherein the top has eight top side elements and the bottom has eight bottom side elements and the top and bottom are hingedly connected along one of said top side elements and one of said bottom side elements and when the top is coupled to the bottom by engagement of the tongue and opening, seven of said top side elements overhang seven of said respective bottom side elements.

5. The food container of claim 1 further comprising feet that support the bottom above a supporting surface when the container is on the supporting surface and the bottom is oriented below the top.

6. The food container of claim 1 wherein at least some of the top side elements have overlapping panels.

7. The food container of claim 1 wherein alternate top side elements have overlapping panels.

8. The food container of claim 1 wherein at least some of the bottom side elements have overlapping panels.

9. The food container of claim 1 wherein alternate five of said bottom side elements have overlapping panels and three of said bottom side elements do not have overlapping panels including one of said bottom side elements that is hingedly connected to one of said top side elements.

10. The food container of claim 1 wherein the top has eight top side elements including a rear top side element, a front top side element, two lateral top side elements and four bevel top side elements and the bottom has eight bottom side elements including a rear bottom side element, a front bottom side element, two lateral bottom side elements and four bevel bottom side elements and the bevel top side elements include overlapping panels and the lateral bottom side elements have overlapping panels.

11. The food container of claim 1 wherein the top has eight top side elements and the bottom has eight bottom side elements and the top side elements include alternate top side elements that have overlapping panels and the bottom side elements include a front bottom side element and two lateral bottom side elements that have overlapping panels.

12. The food container of claim 1 wherein the opening includes an elongate aperture that engages the tongue, and an integral arcuate aperture so that a person can release the tongue from engagement with the elongate aperture by pressing against the tongue.

13. The food container of claim 1 further comprising a tab hingedly coupled to the top side element having the opening, the tab extending at least partially across the opening and wherein a force can be exerted against the tab to press the tab against the tongue thereby moving the tongue out of engagement with the opening.

14. The food container of claim 1 including two locking tongues on two of said bottom side elements wherein the bottom side elements having the locking tongues are separated by one of said bottom side elements having no locking tongue.

15. The food container of claim 1 wherein the bottom side element having a locking tongue is a front bottom side element and another front bottom side element has a second locking tongue, and wherein the side elements having the locking tongues are separated by one of said bottom side elements having no locking tongue, and wherein one of the top side elements has a second opening associated with the second tongue, and wherein the openings each include an elongate aperture that engages the respective tongue, each opening also including an integral semicircular aperture so that a person can release the respective tongue from engagement with the elongate aperture by pressing against the respective tongue thereby decoupling the top and bottom.

16. The food container of claim 1 wherein one of said top side elements is a rear top side element and is less wide than all other top side elements.

17. The food container of claim 1 wherein one of the top side elements is a narrow top side element that is smaller than the other top side elements and the narrow top side element is hingedly connected to one of said bottom side elements.

18. A food container, comprising:

(a) a first piece having a first planar surface and a plurality of first side elements, each of said first side elements extending from the first planar surface at an oblique angle and each of said first side elements coupled to two adjacent first side elements at oblique angles;

(b) a second piece coupled to the first piece and having a second planar surface and a plurality of second side elements, each of said second side elements extending from the second planar surface at an oblique angle and each of said second side elements coupled to two adjacent second side elements at oblique angles; and

(c) each of two of said second side elements having a locking tongue and each of two of said first side elements having an opening for engaging one of the tongues so as to lockingly engage the first piece and the second piece thereby defining an interior volume for receiving food.

19. The food container of claim 18 wherein the first piece has eight first side elements and the second piece has eight second side elements.

20. The food container of claim 18 wherein the first piece has eight first side elements and the second piece has eight second side elements and when the first piece is coupled to the second piece by the tongues and openings, a plurality of the first side elements overhang respective second side elements.

21. The food container of claim 18 further comprising feet that support the container above a supporting surface when the container is on the supporting surface and the second piece is oriented below the first piece.

22. The food container of claim 18 wherein the first side elements include bevel side elements that have overlapping panels.

23. The food container of claim 18 wherein every other of said first side elements has overlapping panels.

24. The food container of claim 18 wherein the second side elements include a front side element having overlapping panels and lateral side elements that have overlapping panels.

25. The food container of claim 18 wherein the second side elements include two rear bevel side elements having overlapping panels, two lateral side elements having overlapping panels, and a front side element having overlapping panels.

26. The food container of claim 18 wherein the first piece has eight first side elements and the second piece has eight second side elements and wherein a plurality of the first side elements overhang a respective plurality of the second side elements.

27. The food container of claim 18 wherein each of said openings includes an elongate aperture that engages one of said tongues, each opening also including an arcuate aperture so that a person can release the one tongue from engagement with the respective elongate aperture by pressing against the one tongue, thereby lockingly disengaging the first piece and second piece.

28. The food container of claim 18 wherein the two second side elements having the locking tongues are separated by one of said second side elements having no locking tongue.

29. The food container of claim 18 wherein the first piece has eight first side elements and the second piece has eight second side elements and the first side elements include four side elements that have overlapping panels and the second side elements include five side elements that have at least one overlapping panel, and wherein a plurality of the first side elements overhang a respective plurality of the second side elements when the first piece is lockingly engaged with the second piece and wherein each of the openings includes an elongate aperture that engages one of the tongues, and also includes an arcuate aperture so that a person can press against the tongue to release the tongue from engagement with the elongate aperture, thereby decoupling the first piece and second piece.

30. The food container of claim 18 wherein one of the first side elements is a rear first side element that is less wide than all other first side elements.

31. The food container of claim 18 wherein one of the first side elements is a narrow side element that is smaller than the other first side elements and the narrow side element is hingedly connected to one of the second side elements.

32. The food container of claim 18 wherein the openings are cutouts on said two first side elements and the locking tongues are located on tongue panels that are hingedly coupled to support panels, the support panels being hingedly coupled to two of said second side elements.

33. The food container of claim 18 wherein the openings are cutouts on said two first side elements and the locking tongues are located on tongue panels that are hingedly coupled to hinge panels that are hingedly coupled to two of said second side elements, the tongues being coplanar with the respective tongue panels and oblique to the respective hinge panels.

34. The food container of claim 18 further comprising a tab hingedly coupled to one of said first side elements, the tab being located proximate one of the openings and arranged so that a force against the tab presses the tab against the respective tongue and moves the tongue into disengagement with the one opening.

35. A blank for forming a food container, comprising:

(a) a planar, unitary piece of container material, the piece having a plurality of panels defined by cut lines and score lines, the panels including a first panel group and a second panel group, the first panel group being hingedly connected to the second panel group;

(b) the first panel group comprising a first central panel having a plurality of first side panels coupled to a perimeter of the first central panel and separated from the first central panel by score lines, the plurality of first side panels including composite first side panels having a first web panel and at least one first connector panel separated from the first web panel by at least one score line, the plurality of first side panels further including first planar side panels comprising a single planar panel, the first connector panels being proximate to the first planar side panels and separated from the first planar side panels by cut lines, at least one of the first side panels having an opening, one of the first side panels having a hinge connection connecting the first panel group to the second panel group;

(c) the second panel group comprising a second central panel having a plurality of second side panels coupled to a perimeter of the second central panel and separated from the second central panel by score lines, the plurality of second side panels including second composite side panels having a second web panel and at least one second connector panel separated from the second web panel by at least one score line, the plurality of second side panels also including second planar side panels comprising a single planar panel, the second connector panels being proximate to the second planar side panels and separated from the second planar side panels by cut lines, at least one of the second side panels having a support panel and a tongue panel connected thereto, the tongue panel including a locking tongue for engaging the opening, one of the second side panels having a hinge connection connected to the first side panel having a hinge connection.

36. The blank of claim 35 wherein at least three of the second side panels are defined by said score and cut lines separating the three second side panels from the second central panel, the cut lines further defining feet that extend away from the second central panel when these second side panels are bent out of a coplanar relationship with the second central panel.

37. The blank of claim 35 wherein the first panel group has eight first side panels.

38. The blank of claim 37 wherein the second panel group has eight second side panels.

39. The blank of claim 35 wherein the first side panel that has a hinge connection has a width that is more narrow than a width of a plurality of the other first side panels.

40. A food container, comprising:

(a) a first part having a first central planar surface and depending first side elements;

(b) a second part having a second central planar surface and depending second side elements;

(c) a lock mechanism comprising a receiving portion and an engaging portion, the receiving portion comprising one of the first side elements, which has an aperture, and a proximately located hingedly connected tab that at least partially extends over a portion of the aperture, the engaging portion comprising one of the second side elements, which has a hingedly coupled tongue, and in which insertion of the tongue into the aperture latches the first part to the second part and a force against the tab urges the tab against the tongue to move the tongue out of the aperture thereby disengaging the first part from the second part.

41. The container of claim 40 wherein the tab is biased toward the tongue.

42. The container of claim 40 wherein the tab is formed by cut lines in said one of the first side elements and is resiliently hinged to said one of the first side elements and the tongue moves the tab away from the aperture when the tongue is inserted into the aperture and the tab is biased into contact with the tongue.

43. The container of claim 40 wherein the first part is above the second part and the aperture is proximate and below the first planar surface.

44. The container of claim 40 wherein the tongue is a portion of a tongue panel and further comprising a support panel that is hingedly coupled to the second side element of the engaging portion and the tongue panel is hingedly coupled to the support panel.

45. The container of claim 40 wherein the first part is above the second part and the aperture is proximate and below the first planar panel and the tab is defined by cut lines and resiliently biased toward a major plane of the first side element of the receiving portion and the tongue moves the tab away from the first side element of the receiving portion when the tongue is engaged with the aperture, and moving the tab into substantial coplanar arrangement with the first side element disengages the tongue from the aperture.

46. The container of claim 40 wherein the tongue disengages from the aperture when the tab is substantially coplanar with the first side element of the receiving portion.