Hoisting pallet

• US 5,329,862 A
• Filed: 03/29/1993
• Issued: 07/19/1994
• Est. Priority Date: 03/29/1993
• Status: Expired due to Fees

• Current Assignee: Alltrista Corporation (Newell Brands Inc.)
• Original Assignee: Penda Corporation (Kruger Family Industries, LLC)
• Inventors: Wolfe, Michael J., Breezer, Harlon W., Pintar, Thomas M.
• Primary Examiner(s): Chen, Jose V.
• Application Number:
  US08/038,526
• Time in Patent Office: 477 Days
• Field of Search: 108/51.1, 108/55.1, 108/55.3, 108/55.5, 108/56.1, 108/56.3, 108/901, 108/902
• US Class Current: 108/55.5
• CPC Class Codes: B65D 19/0012 forming a continuous plane contact surface
• 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 2519/00278 the load supporting surface and the base surface being identical
• CPC Class Codes: B65D 2519/00293 made of more than one piece
• CPC Class Codes: B65D 2519/00308 grid type, e.g. perforated plate
• CPC Class Codes: B65D 2519/00323 made of more than one piece
• CPC Class Codes: B65D 2519/00373 whereby at least one spacer is made of one piece
• CPC Class Codes: B65D 2519/00562 chemical connection, e.g. glued, welded, sealed
• 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: Y10S 108/901 Synthetic plastic industrial platform, e.g. pallet

Abstract

A twin sheet thermoformed pallet upper deck has a reinforcing metal substrate and downwardly protruding detents which engage with a hoisting cable or strap. Notches are formed on the sides of the top deck and restrict the escape of the cable when the pallet is elevated. A twin sheet thermoformed, metal substrate reinforced, lower deck is bolted to the upper deck through injection molded plastic legs which have upper and lower protrusions which fit within semi-circular pockets located on the upper and lower decks. Fasteners extend through metal gusset plates welded to the upper and lower deck substrates to form a rigid and strong pallet.

Claims

1. A pallet comprising:

(a) a twin-sheet thermoformed top deck having a thermoplastic upper sheet which is fused to a thermoplastic lower sheet, wherein the top deck has a lower surface and two opposed ends;

(b) portions of the pallet top deck which define at least one downwardly protruding plastic detent on each of said two opposed ends of the top deck, wherein the detents have inwardly facing surfaces which extend from the top deck lower surface to engage against a flexible lifting member looped beneath the top deck to restrain outward motion of the member when the pallet is supported by the lifting member;

(c) a twin-sheet thermoformed bottom deck having a thermoplastic upper sheet which is fused to a thermoplastic lower sheet; and

(d) a plurality of plastic posts which extend between and are fastened to the top deck and the bottom deck, wherein the posts are located inwardly from the top deck indents.

2. The pallet of claim 1 further comprising portions of the pallet top deck which define a notch on each side of the top deck between said two opposed ends, wherein the notches have a bearing wall which extends vertically and has outwardly extending sidewalls which restrict motion of a flexible lifting member engaged within the notch in a direction between said opposed ends.

3. The pallet of claim 2 further comprising a metal clip connected to the pallet top deck and extending into a notch, wherein the clip has portions which cover the bearing wall of said notch and protect said bearing wall from abrasion.

4. The pallet of claim 1 further comprising:

(a) a depression formed in the top deck lower sheet which defines a recessed pocket positioned above one of said plurality of posts,; and

(b) portions of said one post which protrude upwardly into engagement with the top deck pocket to position said one post and restrict its motion.

5. The pallet of claim 1 further comprising:

(a) a metal substrate located in the top deck between the upper sheet and the lower sheet, the substrate having segments which are positioned above portions of the pallet posts;

(b) at least one metal plate which is connected to one of said substrate segments, wherein the metal plate is positioned above a pallet post, the plate having portions defining a bolt hole; and

(c) a fastener which extends through the top deck upper sheet, through the metal plate bolt hole, through the top deck lower sheet, through the pallet post and through the bottom deck to engage the top deck to the bottom deck.

6. The pallet of claim 5 further comprising:

(a) a metal substrate located in the bottom deck between the bottom deck upper sheet and the bottom deck lower sheet, the substrate having segments which are positioned below portions of the pallet posts; and

(b) at least one metal plate which is connected to a bottom deck metal substrate, wherein the metal plate is positioned below a pallet post, the plate having portions defining a bolt hole, wherein the fastener extends through the bottom deck upper sheet, the bottom deck plate, and the bottom deck lower sheet to engage the top deck to the bottom deck.

7. The pallet of claim 1 further comprising metal lips which are fastened to the top deck and which extend upwardly therefrom to restrict the movement off the pallet of material positioned on the top deck.

8. The pallet of claim 1 wherein the pallet top deck upper sheet defines an upper surface, and further comprising a plurality of grooves which extend beneath the level of the upper surface, the grooves being adapted to engage with a flowable material positioned on the upper surface to restrict motion of said material off the pallet.

9. A pallet comprising:

(a) a twin-sheet thermoformed top deck having a thermoplastic upper sheet which is fused to a thermoplastic lower sheet;

(b) a twin-sheet thermoformed bottom deck having a thermoplastic upper sheet which is fused to a thermoplastic lower sheet;

(c) a plurality of plastic posts which extend between and are fastened to the top deck and the bottom deck;

(d) a metal substrate located in the top deck between the upper sheet and the lower sheet, the substrate having segments which are positioned above and over portions of the pallet posts;

(e) at least one metal plate which is connected to one of said substrate segments, wherein the metal plate is positioned above and over a pallet post, the plate having portions defining a bolt hole; and

(f) a fastener which extends through the top deck upper sheet, through the metal plate bolt hole, through the top deck lower sheet, through the pallet post and through the bottom deck to engage the top deck to the bottom deck.

10. The pallet of claim 9 further comprising:

(a) a metal substrate located in the bottom deck between the bottom deck upper sheet and the bottom deck lower sheet, the substrate having segments which are positioned beneath portions of the pallet posts; and

(b) at least one metal plate which is connected to a bottom deck metal substrate which is positioned beneath a pallet post, the plate having portions defining a bolt hole, wherein the fastener extends through the bottom deck upper sheet, the bottom deck plate, and the bottom deck lower sheet to engage the top deck to the bottom deck.

11. A pallet comprising:

(a) a twin-sheet thermoformed top deck having a thermoplastic upper sheet which is fused to a thermoplastic lower sheet, wherein the top deck has a lower surface, and two opposed ends and two sides which extend between the ends;

(b) portions of the pallet top deck which define at least one downwardly protruding plastic detent on each of said two opposed ends of the top deck, wherein the detents have an inwardly facing surface which extends beneath the top deck lower surface to engage against a flexible lifting member looped beneath the top deck to restrain outward motion of the member when the pallet is supported by the lifting member;

(c) portions of the pallet top deck which define a a pair of notches proximate each of said opposed ends, wherein a notch is positioned on each of said top deck sides intermediate said opposed ends, and wherein each notch has a bearing wall which extends vertically and has outwardly extending sidewalls which restrict motion of a flexible lifting member engaged within a notch in a direction between said opposed ends;

(d) a bottom deck disposed beneath the top deck; and

(e) a plurality of plastic posts which extend between and are fastened to the top deck and the bottom deck, wherein the posts are located inwardly from the top deck indents and notches.

12. The pallet of claim 11 further comprising a metal clip which is connected to the pallet top deck and which has portions which extend into a notch to cover the bearing wall of a notch and protect said bearing wall from abrasion.

13. The pallet of claim 11 wherein a plurality of detents are aligned along each opposed end.