Corrugated pallet

• US 5,535,668 A
• Filed: 12/17/1993
• Issued: 07/16/1996
• Est. Priority Date: 12/17/1993
• Status: Expired due to Fees

• Current Assignee: The Servants, Inc.
• Original Assignee: The Servants, Inc.
• Inventors: Farley, Timothy R., Besaw, Larry G.
• Primary Examiner(s): Chen, Jose V.
• Application Number:
  US08/169,317
• Time in Patent Office: 942 Days
• Field of Search: 108/51.3, 108/56.3, 108/56.1, 108/51.1
• US Class Current: 108/51.3
• CPC Class Codes: B65D 19/0012 forming a continuous plane contact surface
• CPC Class Codes: B65D 19/0024 forming discontinuous or non-planar contact surfaces
• CPC Class Codes: B65D 19/0028 and each contact surface having a discrete foot-like shape
• CPC Class Codes: B65D 19/20 made wholly or mainly of paper
• CPC Class Codes: B65D 2519/00019 Paper
• CPC Class Codes: B65D 2519/00034 Plastic
• CPC Class Codes: B65D 2519/00054 Paper
• CPC Class Codes: B65D 2519/00069 Plastic
• CPC Class Codes: B65D 2519/00089 Paper
• CPC Class Codes: B65D 2519/00104 Plastic
• CPC Class Codes: B65D 2519/00124 Paper
• CPC Class Codes: B65D 2519/00139 Plastic
• CPC Class Codes: B65D 2519/00273 made of more than one piece
• CPC Class Codes: B65D 2519/00278 the load supporting surface and the base surface being identical
• CPC Class Codes: B65D 2519/00288 made of one piece
• CPC Class Codes: B65D 2519/00318 made of one piece
• CPC Class Codes: B65D 2519/00323 made of more than one piece
• CPC Class Codes: B65D 2519/00333 contact surface having a stringer-like shape
• CPC Class Codes: B65D 2519/00338 contact surface having a discrete foot-like shape
• CPC Class Codes: B65D 2519/00343 contact surface being substantially in the form of a panel
• CPC Class Codes: B65D 2519/00373 : whereby at least one spacer is made of one piece
• CPC Class Codes: B65D 2519/00378 : whereby at least one spacer is made of two or more pieces
• CPC Class Codes: B65D 2519/00442 : on the base surface
• CPC Class Codes: B65D 2519/00447 : on the non-integral separating spacer
• CPC Class Codes: B65D 2519/00557 : without separate auxiliary elements
• CPC Class Codes: B65D 2519/00562 : chemical connection, e.g. glued, welded, sealed
• CPC Class Codes: B65D 2519/00572 : with separate auxiliary element, e.g. screws, nails, bayonets
• CPC Class Codes: B65D 2519/0086 : Protection against environmental hazards, e.g. humidity, bacteria, fire

Abstract

A lightweight, high strength disposable or recyclable corrugated pallet. The corrugated pallet is formed from one or more sheets of flat corrugated material, at least one of which is scored and cut to form a plurality of spaced apart opposing panels. The panels are hingeably connected to the primary sheet and folded downwardly normal to the bottom surface of the sheet(s) defining a pair of opposing panel support legs. A generally square aperture is formed in the surface of the sheet upon folding of the panels. A support member complementary sized and shaped according to the aperture formed in the sheet and the length of the opposing panel support legs is inserted through the aperture and secured between the pair of opposing panel support legs, preferably with an adhesive. The support member is formed from one or more layers of a narrow strip of corrugated material having a plurality of scores cut therein along the surface of one side for bending said strip into a generally square configuration. The flutes of the corrugated material comprising the support member and opposing panel support legs are oriented in the vertical plane to maximize the strength to weight ratio.

Claims

1. A corrugated pallet comprising:

a primary sheet of flat corrugated material having a plurality of pairs of opposing panels formed integrally therein, each of said pair of opposing panels being hingeably connected to said primary sheet, each of said opposing panels being folded downwardly normal to the surface of said primary sheet defining a pair of opposing panel support legs having an inner surface and outer surface, being formed of corrugated material having flutes oriented normal to the surface of said primary sheet, and forming a generally square aperture in said primary sheet between said opposing panel support legs;

a support member secured to each pair of opposing panel support legs, said support member comprising a strip of corrugated material having a plurality of scores cut therein along the surface of one side for bending said strip into a corrugated support member having flutes oriented normal to the surface of said primary sheet and forming a generally square configuration defining four sides, a top fluted edge, a bottom fluted edge, and a generally open center, said support member being disposed within said aperture and thereinbetween said opposing panel support legs formed in said primary sheet; and

means for fastening said sides of said support members to said inner surface of said opposing panel support legs for supporting said primary panel.

2. The corrugated pallet of claim 1, wherein said support members comprise a strip of corrugated material forming a first section, a second section, a third section, a fourth section, and a fifth section, and the distal end of said first section and the distal end of said fifth section join near the center of one side, said support member being sized and shaped for insertion between said opposing panel support legs.

3. The corrugated pallet of claim 1, including a second support members sized and shaped for wrapping around the outer periphery of said opposing panel support leg(s).

4. The corrugated pallet of claim 1, wherein said support members are secured to said opposing panel support legs by an adhesive.

5. The corrugated pallet of claim 4, wherein said adhesive is applied to the surface of said opposing panel support legs.

6. The corrugated pallet of claim 5, wherein said adhesive is spread to on the outer surface of said support member(s) by insertion of said support member(s) through the aperture formed in said primary sheet and the surface of said support member(s) is contiguous with the adhesive on the surface of said opposing panel support legs.

7. The corrugated pallet of claim 1, wherein the support members are made of corrugated board with the corrugations extending normal to said primary sheet.

8. The corrugated pallet of claim 1, including at least one cover sheet adhesively secured to said primary panel.

9. The corrugated pallet of claim 8, wherein said cover sheet is rotated 90 degrees with respect to said primary sheet so that the flutes of said primary sheet are positioned normal to the flutes of said cover sheet.

10. The corrugated pallet of claim 1, including a base sheet adhesively secured to a bottom surface of said opposing panel support legs and support members.

11. The corrugated pallet of claim 10, wherein said base sheet is rotated 90 degrees with respect to said primary sheet so that the flutes of said primary sheet are positioned normal to the flutes of said base sheet.

12. The corrugated pallet of claim 1, wherein said corrugated material comprises one or more sheets of fluted single, double, triple, quadruple ply corrugated paper.

13. The corrugated pallet of claim 1, wherein said opposing panel support legs are cut so that the hinge is normal to the direction of the flutes of said primary sheet and the flutes of said opposing panel extend parallel to the flutes in said primary sheet.

14. The corrugated pallet of claim 1, including a second primary sheet comprising a

a) a flat corrugated material having a plurality of pairs of opposing panels formed therein, each of said pair of opposing panels being hingeably connected to said primary sheet, each of said opposing panels being folded downwardly normal to the surface of said primary sheet defining opposing panel support legs and forming an aperture in said primary sheet between said opposing panels;

and

means for fastening said support members to said support legs for supporting said primary panel;

b) said second primary sheet being rotated 90 degrees with respect to said first primary sheet so that said opposing panel support legs from said first primary sheet and said second primary sheet form a four sided opposing panel support leg; and

c) means for fastening said second primary sheet to said first primary sheet.

15. The corrugated pallet of claim 14, wherein said means for fastening is an adhesive.

16. The corrugated pallet of claim 14, wherein said second primary sheet and opposing panel support legs are inverted and said opposing panel support legs of said second primary sheet are upwardly directed and positioned in alignment with and contiguous with said downwardly directed opposing panel support legs of said first primary sheet.

17. The corrugated pallet of claim 14, said support member comprising a strip of corrugated material having a plurality of scores extending normal to the longitudinal axis thereof forming a first section, a second section, a third section, a fourth section, and a fifth section folded inwardly so that the distal end of the first section meets with the distal end of the fifth section.

18. The corrugated pallet of claim 17, wherein said distal end of said first section and distal end of said fifth section join near the center of one side.

19. The corrugated pallet of claim 1, said support member comprising a strip of corrugated material having a plurality of scores extending normal to the longitudinal axis thereof forming a first section, a second section, a third section, a fourth section, a fifth section, a sixth section, a seventh section, an eighth section, and a ninth section folded inwardly so that the outer surface of the first section and ninth section are contiguous with the inner surface of the fifth section, and the outer surface of the second section is contiguous with the outer surface of the eighth section.

20. The corrugated pallet of claim 1, including a second support member(s) sized and shaped to wrap around the outer periphery of said opposing panel support legs.

21. The corrugated pallet of claim 1, wherein said primary sheet includes a pair of spaced apart parallel score lines forming an inner side panel and outer side panel on each side of said primary sheet, said support members being positioned near the score line of the inner side panel, said inner panels and said outer panels folding inwardly around said outer support members forming side rails extending along each side of said primary sheet.

22. The corrugated pallet of claim 1, wherein said primary sheet includes a pair of spaced apart parallel score lines forming an inner side panel and outer side panel on each side of said primary sheet, said support members being positioned near the score line of the inner side panel, said inner panels and said outer panels folding inwardly around said support members positioned near the sides of said primary sheet forming side rails extending along each side of said primary sheet.

23. The corrugated pallet of claim 1, including a base member comprising a support member or reinforced support member adhesively secured to a pre-cut panel of flat corrugated material having an adhesive backing thereon, said adhesive being covered with a nonstick film, or waxed paper material, said base member being adhesively attachable to the bottom of said primary sheet, said cover sheet, or said base sheet for additional structural support.

24. The corrugated pallet of claim 1, wherein insertion of said support members through said aperture in said primary sheet and between said opposing panel support legs extend the length of said opposing panel support legs and the thickness of said primary sheet for providing optimal support for the load supported thereon.

25. The corrugated pallet of claim 1, wherein wrapping or surrounding said support member around said opposing panel support leg(s) provides a reinforcing structure wherein the depth of said support member extends the length of said opposing panel support legs less the thickness of said primary sheet, so that a plurality of top edges of said support member supports the bottom surface of said primary sheet extending around said primary sheet aperture for providing optimal support for the load supported thereon and alleviate stress at a junction of said opposing panel support legs and said primary sheet.

26. The corrugated pallet of claim 1, wherein said support members are formed having a depth of either more or less than that of said primary sheet providing lateral side support and a supporting edge for stacking said pallets one on top of another.

29. The corrugated pallet of claim 1, wherein said support member comprises corrugated material including at least one strip of fluted single, double, triple, or quadruple ply corrugated material.

27. A reinforced corrugated support base member comprising a pre-cut panel of flat corrugated material having an outer surface and an inner surface, said outer surface being covered with an adhesive, said adhesive on said outer surface being covered with a film of removable nonstick material and said inner surface being permanently affixed to an edge of a support member comprising a strip of corrugated material having a plurality of scores cut therein along an inner surface of one side of said strip for bending said strip into a rectangular loop, wherein said film of removable nonstick material covering said adhesive can be removed and said outer surface of said base support member is attachable to a bottom surface of a corrugated pallet providing structural support therefor.

28. The reinforced corrugated support base member of claim 27, wherein said support member comprises corrugated material including at least one strip of fluted single, double, triple, or quadruple ply corrugated material.