Vertically-storing dock leveler apparatus and method

• US 7,043,790 B2
• Filed: 05/27/2004
• Issued: 05/16/2006
• Est. Priority Date: 05/27/2003
• Status: Active Grant

• Current Assignee: 4Front Engineered Solutions Incorporated (Assa Abloy AB)
• Original Assignee: SPX Dock Products, Inc. (Assa Abloy AB)
• Inventors: Alexander, James C., Hoofard, Richard
• Primary Examiner(s): Hartmann, Gary S.
• Application Number:
  US10/854,236
• Publication Number:
  US 20050172426A1
• Time in Patent Office: 719 Days
• Field of Search: 14/695, 14/711, 14/713
• US Class Current: 14/71.3
• CPC Class Codes: B65G 69/2835 with spring-operated means
• CPC Class Codes: B65G 69/2841 extensible by pivoting parts

Abstract

A dock leveler for bridging the gap between a loading dock and the bed of a vehicle parked at the loading dock. The dock leveler is configured for installation on the top of the dock and is designed to rotate from a vertically-stored raised position to at least one lowered, operative position. In some embodiments, the dock leveler can be lowered either for normal operation so that the deck assembly rests on the bed of the vehicle or it can be lowered to accommodate an end-loading condition.

Claims

1. A dock leveler comprising:

a frame configured to be mounted to a loading dock;

a deck assembly having a top surface, the deck assembly pivotally mounted to the frame;

a counter balancing spring mounted at one end to the deck assembly and mounted to the frame at the other end, the counter balancing spring having a line of action located substantially above a pivot axis of the deck assembly; and

a curb attached to the deck assembly, the curb adjacent to the deck assembly along at least one side of the deck assembly, wherein the curb comprises a housing for the counter balancing spring and the counter balancing spring is housed, at least in part, by the curb.

2. The dock leveler of claim 1, wherein the counter balancing spring is located at a side of the deck assembly.

3. The dock leveler of claim 1, wherein no counter balancing springs are located under the deck assembly.

4. The dock leveler of claim 1, wherein at least part of the counter balancing spring extends past a dock face.

5. The dock leveler of claim 1, further comprising a movable effective anchor point for the counter balancing spring.

6. The dock leveler of claim 1, wherein the counter balancing spring has a line of action located substantially above the pivot axis of the dock assembly when the dock assembly is in a substantially horizontal position.

7. A dock leveler comprising:

a frame configured to be mounted to a loading dock;

a deck assembly having a top surface, the deck assembly pivotally mounted to the frame;

a counter balancing spring mounted at one end to the deck assembly and mounted to the frame at the other end, the counter balancing spring having a line of action located substantially above a pivot axis of the deck assembly;

a curb attached to the deck assembly, the curb adjacent to the deck assembly along at least one side of the deck assembly, wherein an end of the curb and the frame define a gap that varies in length with respect to the position of the deck assembly as it pivots on the frame; and

a cover configured to cover the gap.

8. The dock leveler of claim 7, wherein the cover is removable.

9. The dock leveler of claim 7, wherein at least a portion of the cover slides under the curb when the gap is shorted by the pivoting movement of the deck assembly and at least a portion of the cover retreats from under the curb when the gap is lengthened by the pivoting movement of the deck assembly.

10. The dock leveler of claim 9, further comprising a spring configured to urge the cover against an underside of the curb.

11. The dock leveler of claim 7, wherein the cover pivots about a pivot pin located on at least one of the deck assembly and the frame.

12. The dock leveler of claim 11, wherein the cover is removable.

13. The dock leveler of claim 7, wherein the counter balancing spring has a line of action located substantially above the pivot axis of the dock assembly when the dock assembly is in a substantially horizontal position.