Recyclable plastic pallet

• US 5,365,859 A
• Filed: 07/24/1992
• Issued: 11/22/1994
• Est. Priority Date: 07/24/1992
• Status: Expired due to Fees

• Current Assignee: Consulting Project Managers Incorporated
• Original Assignee: David A. Schrage
• Inventors: Schrage, David A.
• Primary Examiner(s): Milano, Michael J.
• Application Number:
  US07/919,595
• Time in Patent Office: 851 Days
• Field of Search: 108/56.1, 108/55.1, 108/55.5, 108/51.1, 108/53.1, 108/901, 108/902
• US Class Current: 108/56.1
• CPC Class Codes: B65D 19/0071 forming discontinuous or non-planar contact surfaces
• CPC Class Codes: B65D 2519/00034 Plastic
• CPC Class Codes: B65D 2519/00069 Plastic
• CPC Class Codes: B65D 2519/00104 Plastic
• CPC Class Codes: B65D 2519/00293 made of more than one piece
• CPC Class Codes: B65D 2519/00298 skeleton type
• 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 2519/00373 whereby at least one spacer is made of one piece
• CPC Class Codes: B65D 2519/00393 grid type, e.g. perforated plate
• CPC Class Codes: B65D 2519/00567 mechanical connection, e.g. snap-fitted
• CPC Class Codes: B65D 2519/00572 with separate auxiliary element, e.g. screws, nails, bayonets
• CPC Class Codes: B65D 2519/00835 Integral
• CPC Class Codes: B65D 2519/0084 Separated elements, e.g. including in-moulded elements
• CPC Class Codes: B65D 2565/385 especially suited for or with means facilitating recycling
• CPC Class Codes: Y10S 108/901 Synthetic plastic industrial platform, e.g. pallet
• CPC Class Codes: Y10S 108/902 Made with deformable integral fastening elements

Abstract

Pallets (20) upon which objects (22) may be stacked and to which a wrapping sheet (24) of stretch film, or a strap (102), may be secured to retain the objects (22) in relation to the pallet (20), is disclosed. The pallet (20) has rails (30,32,34) with perpendicularly extending slats (36) secured thereto. The rail (30) has an anchor (66) about which the wrapping sheet (24) may be frictionally and wedgingly retained. The anchor (66) may include either an elongate channel (70,72) or tongue (66) or both. The rails (30,32,34) may have ends with corner supports (60) which cooperate with one another to prevent objects secured atop pallet (20) from moving laterally or longitudinally. Corner supports (60) also allow the pallets (20) to be stacked one on top another. The ends of the rails have grooves (90) formed therein so that the wrapping sheet (24) may be stretchably secured within the groove (90) thereby impeding the wrapping sheet (24) from moving upwardly when wrapped about the pallet (20). The rails (30,32,34) may have stakes (50) formed therein which are received into apertures (54) in slat (36), preferably in a press fit and interlocking manner. Further, the stakes (50) and apertures (54) are heat-staked together to further secure slats (36) to rails (30,32,34). At least one of the rails (30,32,34) or one of the slats (36) may have a plurality of spaced slots (104,124) extending therethrough for cooperatively and releasably retaining strap (102) in a self-locking manner.

Claims

1. A pallet upon which objects may be stacked and to which a wrapping sheet, or a strap, or both may be secured to retain the objects in relation to the pallet, the pallet comprising:

longitudinally spaced and laterally extending elongate front and back rails, the rails each having vertically spaced top and bottom surfaces; and

laterally spaced and longitudinally extending elongate slats, the slats being secured to the top and bottom surfaces of the rails;

at least one of the rails further including anchoring means for frictionally retaining the wrapping sheet, the anchoring means including an elongate tongue with an opening formed thereabout.

2. The pallet of claim 1 wherein:

the rails have ends with corner supports including laterally and longitudinally extending flanges extending vertically above the respective top surfaces of the rails, the corner supports cooperating with one another to prevent objects secured atop the pallet from moving in relation to the pallet.

3. The pallet of claim 2 wherein:

the corner supports are dimensioned to cooperate with one another to receive another pallet therebetween, whereby the pallets may be stackably retained one atop another.

4. The pallet of claim 1 wherein:

the slats are generally planar and board-like and have apertures formed therein and the top surfaces of the rails have vertically extending stakes formed therein, the stakes being cooperatively received within the apertures to secure the slats and rails in relation to each other, the stakes having enlarged heads over which the apertures are pressed to retain the slats to the rails.

5. The pallet of claim 4 wherein:

the stakes and the apertures are heat-staked together.

6. The pallet of claim 4 wherein:

the stakes and the apertures have opposing stepped surfaces formed thereon which are configured to be joined in a press-fit manner to form interlocking joints between the stakes and the apertures.

7. The pallet of claim 1 wherein:

the top and bottom surfaces of the rails have laterally spaced notches formed therein which receive associated slats, the top surfaces of the rails and the top surfaces of the slats cooperating to form a flush, planar top surface on the pallet.

8. A pallet which rests upon a floor and upon which objects may be stacked and to which a wrapping sheet can be attached to wrap about objects on the pallet, the pallet comprising:

a first member having a first surface upon which the objects may be stacked;

a second member having a second surface spaced from the first surface and adapted to rest upon a floor;

an intermediate portion connecting the first and second members and defining a laterally extending periphery between the first and second surfaces, the intermediate portion having a wrapping sheet retaining channel and including an elongate tongue with an opening formed thereabout defining the retaining channel;

wherein the wrapping sheet can be frictionally retained within the retaining channel and the sheet wrapped about the pallet and the objects to retain the objects on the pallet.

9. The pallet of claim 8 wherein:

the tongue has one or more laterally spaced slots inclined in relation to the elongate tongue, the slots being dimensioned so as to frictionally retain the wrapping sheet.

10. The pallet of claim 8 wherein:

the tongue has one or more projections formed thereon dimensioned to stretchably retain the wrapping sheet about the projections.

11. A pallet which rests upon a floor and upon which objects may be stacked and to which a strap may be attached to wrap about the objects, the pallet comprising:

a first member having a first surface upon which the objects may be stacked;

a second member having a second surface spaced from the first surface and adapted to rest upon a floor;

an intermediate portion connecting the first and second surfaces and defining a laterally extending periphery;

wherein at least one first member, the second member, or the intermediate portion has two spaced apart bars defining a slot therebetween and having two strap surfaces which are positioned outboard relative to the slot;

a portion of the strap may be threaded about the two outboard strap surfaces and through the slot in an S-shaped fashion with another portion of the strap frictionally capturing the S-shaped portion against the pallet when the strap is placed under tension such that the strap is self-locking and does not require a separate fastener to secure the strap to the pallet

the pallet includes a plurality of spaced apart and parallel extending slats defining the first surface, the two bars defining the intermediate slot and the outboard strap surfaces being formed in one of the slots.

12. In combination, a pallet and a strap for retaining objects which are stacked atop the pallet, the combination comprising:

a first member having a first surface upon which the objects may be stacked;

a second member having a second surface spaced from the first surface and adapted to rest upon a floor;

an intermediate portion connecting the first and second member and defining a laterally extending periphery; and

an elongate strap;

wherein at least one of the first member, the second member, or the intermediate portion has two spaced apart bars defining a slot therebetween and having two strap surfaces which are positioned outboard relative to the slot;

whereby a portion of the strap may be threaded about the two outboard strap surfaces and through the slot in an S-shaped fashion with another portion of the strap frictionally capturing the S-shaped portion against the pallet when the strap is placed under tension such that the strap is self-locking and does not require a separate fastener to secure the strap to the pallet.