Shipping pallet

• US 5,456,189 A
• Filed: 10/06/1993
• Issued: 10/10/1995
• Est. Priority Date: 10/06/1993
• Status: Expired due to Fees

• Current Assignee: Cellular Technology Limited
• Original Assignee: Cellular Technology Limited
• Inventors: Belle Isle, Richard
• Primary Examiner(s): Chen, Jose V.
• Application Number:
  US08/132,177
• Time in Patent Office: 734 Days
• Field of Search: 108/901, 108/902, 108/51.1, 108/56.1, 108/56.3, 108/54.1
• US Class Current: 108/57.17
• CPC Class Codes: B65D 19/0095 and each contact surface having a stringer-like shape
• CPC Class Codes: B65D 2519/00034 Plastic
• CPC Class Codes: B65D 2519/00069 Plastic
• CPC Class Codes: B65D 2519/00273 made of more than one piece
• 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 2519/00562 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 2519/00761 the surface being variable, e.g. extendable pallets B65D2519/00746 takes precedence
• CPC Class Codes: B65D 2519/0087 collapsible pallet
• CPC Class Codes: Y10S 108/902 Made with deformable integral fastening elements

Abstract

A plastic pallet comprises a plurality of longitudinal spaced apart and parallel base members; a plurality of longitudinal spaced apart and parallel cross-members disposed transversely over the base members; and a plurality of compression cups or cylinders for snapping the components together. The base and cross-members are extruded polyvinylchloride. Each of the base member has a substantially "I"-beam cross-section with a web portion disposed between substantially trapezoidal upper and lower flange portions. The base and cross-members each includes a plurality of longitudinal openings for making the pallet lightweight and rigid.

Claims

1. A plastic pallet comprising:

a) a plurality of longitudinal spaced apart and parallel base members;

b) a plurality of longitudinal spaced apart and parallel cross-members disposed transversely over said base members such that each of said cross-member is associated with said base members disposed underneath;

c) each of said cross-members and said base members disposed below having abutting portions, each of said abutting portions including cooperating holes;

d) a plurality of cylinders each having a diametrical slot disposed from its forward end to its intermediate portion to permit said cylinders to be forced into respective abutting holes;

e) each of said cylinders including a circumferential slot at its intermediate portion; and

f) each of said holes including edge portions adapted to be disposed within said circumferential slot such that each of said abutting portions are locked together, thereby to secure each of said cross-members to said base members.

2. A plastic pallet as in claim 1, wherein:

a) said base and cross-members are extruded.

3. A plastic pallet as in claim 1, wherein:

a) each of said base members has a substantially "I"-beam cross-section having a web portion disposed between substantially trapezoidal upper and lower flange portions.

4. A plastic pallet as in claim 3, wherein:

a) each of said web portions has a pair of parallel spaced apart walls and a plurality of ribs disposed between said walls.

5. A plastic pallet as in claim 3, wherein:

a) said upper and lower flange portions each includes a substantially trapezoidal longitudinal opening.

6. A plastic pallet as in claim 1, wherein:

a) said base and cross-members are made from polyvinylchloride plastic.

7. A plastic pallet as in claim 1, wherein:

a) said cross-members are hollow.

8. A plastic pallet as in claim 1, wherein:

a) said slot is tapered from wide to narrow from the forward end of said cylinder to its intermediate portion.

9. A plastic pallet as in claim 1, wherein:

a) said cylinder includes a central tapered bore; and

b) a pin adapted to be forced into said tapered bore such that said cylinder is expanded.

10. A plastic pallet as in claim 1, wherein:

a) said cylinder is molded polyvinylchloride plastic.

11. A plastic pallet as in claim 1, wherein:

a) said cross-members are pivotable about said cylinders, thereby to collapse said pallet into a substantially parallelogram shape.

12. A plastic pallet as in claim 11, and further comprising:

a) means for locking said cross-members to said base members at transverse positions.

13. A plastic pallet as in claim 12, wherein:

a) said locking means includes a plug secured to one of said base members; and

b) said plug includes a crowned head projecting above a surface of said one base member and cooperates with an opening in said one cross-member.

14. A plastic pallet as in claim 1, wherein

a) said base and cross-members each includes a plurality of longitudinal openings.