Lightweight pallet

• US 5,329,861 A
• Filed: 02/12/1993
• Issued: 07/19/1994
• Est. Priority Date: 06/24/1991
• Status: Expired due to Term

• Current Assignee: Ecoduro Incorporated
• Original Assignee: David F. Mccarthy
• Inventors: McCarthy, David F.
• Primary Examiner(s): Chen, Jose V.
• Application Number:
  US08/017,959
• Time in Patent Office: 522 Days
• Field of Search: 108/51.3, 108/56.1, 108/51.1, 108/56.3
• US Class Current: 108/51.3
• CPC Class Codes: B65D 19/0026 and each contact surface having a stringer-like shape
• CPC Class Codes: B65D 2519/00019 Paper
• CPC Class Codes: B65D 2519/00054 Paper
• CPC Class Codes: B65D 2519/00273 made of more than one piece
• CPC Class Codes: B65D 2519/00288 made of one piece
• CPC Class Codes: B65D 2519/00303 Cell type, e.g. honeycomb
• 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 2519/00358 Cell type, e.g. honeycomb
• 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: Y02W 30/80 Packaging reuse or recycling, e.g. of multilayer packaging bio-packaging Y02W90/10

Abstract

This patent discloses an improved lightweight, recyclable, nearly completely paper pallet. The pallet is made of a Honeycomb paper base and Honeycomb paper support runners or blocks. The blocks are protected and significantly strengthened by a rigid paper cap. The base, runners, blocks, and cap may also have a protective liner, such as polyethylene, or be otherwise treated to enhance water and moisture resistance.

Claims

1. An improved pallet of the type used to package, store, or ship goods, the improvement comprising in combination:

(a) a pallet base having an upper face, a bottom face, and a first side opposite a second side;

(b) a predominantly U-shaped cap having an interior wall and an exterior wall and being mounted adjacent to the bottom face of the pallet base and extending from the first side to the second side of the pallet base;

(c) said U-shaped cap having a first arm, a second arm, and a beam section intermediate the first and second arms, the first arm being secured to the bottom side of the pallet base, the beam section being adjacent to the side surface of the support member, and the second arm extending around and below the lowermost portion of the support member; and

(d) a compression support member having an upper end and a side surface extending transversely downwardly from the upper end, the support member being mounted in the U-shaped cap with the side surface of the support member protectively adjacent an interior wall of the U-shaped cap.

2. The improved pallet base of claim 1 wherein the U-shaped cap has lift fork channels whereby lifting forks can penetrate through the channels to lift the pallet, the support member has a honeycomb structure, the pallet base has a honeycomb structure, the U-shaped cap comprises compressed cellulose sheeting, and the support member and pallet base are comprised of cellulose.

3. The improve pallet of claim 1 wherein the support member has a honeycomb structure and wherein the pallet base has a honeycomb structure.

4. The improved pallet of claim 1 further comprising side caps abutting otherwise exposed end portions of the support member to further provide a protective barrier for the support member.

5. An improved pallet of the type useable to package, store, or ship goods, the improvement comprising in combination:

(a) a pallet base having a bottom, a top, and a first pallet side opposite a second pallet side;

(b) a first pallet support secured to the bottom of the pallet base adjacent the first pallet side; and

(c) a second pallet support secured to the bottom of the pallet base adjacent to the second pallet side and distal from the first pallet side;

each such pallet support including;

(i) a compression support member having an upper end and a side surface extending transversely downwardly from the upper end and being nearest the pallet side to which the pallet support is adjacent; and

(ii) a U-shaped cap mounted about the compression member and having an exterior protective wall and an interior wall, the interior wall being adjacent the transverse side of the compression support member of the pallet support, said U-shaped cap having a first arm, a second arm, and a beam section intermediate the first and second arms, the first arm being secured to the bottom side of the pallet base, the beam section being adjacent to the side surface of the support member, and the second arm extending around and below the lowermost portion of the support member.

6. The improved pallet of claim 5 wherein the U-shaped cap has fork channels whereby lifting forks can pass through the channels to lift the pallet, wherein the support member has a honeycomb structure, the U-shaped cap comprises cellulose sheeting, and wherein the support member and the pallet base are comprised of cellulose.

7. The improved pallet of claim 6 wherein the U-shaped cap also includes folded end portions abutting otherwise exposed end portions of the support member to further provide a protective barrier for the support member.

8. The improved pallet of claim 5 wherein the pallet base has a honeycomb structure.

9. An improved lightweight paper pallet of the type that is used to package, store, or ship goods, the improvement comprising in combination:

(a) a rectangular paper honeycomb pallet base having a top face, a bottom face, and a first side opposing a second side;

(b) at least a first and a second compressed paper U-shaped cap, each such cap (i) being mounted adjacent the bottom of the pallet base and extending from the first side to the second side of the pallet base, and (ii) having an interior and exterior wall, a first and a second arm, a beam section interconnecting the first and second arms, and first and second fork channels, the first U-shaped cap being adjacent the first side of the pallet base and distal from the second side of the pallet base, and the second U-shaped cap being adjacent the second side of the pallet base and distal from the first side of the pallet base;

(c) at least a first and a second honeycomb paper support mounted within each U-shaped cap, each such support having an upper end, a bottom end, and a transverse side extending between the upper end and the lower end, the transverse side being adjacent the interior wall of the U-shaped cap, the first support being mounted adjacent one end of the U-shaped cap and the second support being mounted adjacent the other end of the U-shaped cap, each support being mounted separated from a fork channel to avoid contact of a penetrating lift fork with the support member.

10. The improved lightweight pallet of claim 9 further comprising in combination (i) a third compressed paper U-shaped cap mounted between the first and second U-shaped caps, (ii) third and fourth fork channels penetrating the third U-shaped cap, and (iii) third and fourth honeycomb paper support members mounted within the third U-shaped cap, each support member mounted in its respective U-shaped cap adjacent to a fork channel.

11. The improved lightweight pallet of claim 9 also including an additional paper honeycomb support mounted in each U-shaped cap between the two fork channels in the U-shaped cap.

12. The improved pallet of claim 11 wherein the U-shaped cap also includes folded end portions abutting otherwise exposed end portions of the support member to further provide a protective barrier for the support member.