Seal carried by a vertically storing dock leveler

• US 5,001,799 A
• Filed: 04/03/1989
• Issued: 03/26/1991
• Est. Priority Date: 04/03/1989
• Status: Expired due to Term

• Current Assignee: 3894576 Canada, Ltd.
• Original Assignee: Serco Limited (Serco Group PLC)
• Inventors: Alexander, James C., Sullivan, Vincent
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US07/331,983
• Time in Patent Office: 722 Days
• Field of Search: 14/69.5, 14/71.1, 14/71.7, 52/173 DS, 49/475, 49/485
• US Class Current: 14/71.1
• CPC Class Codes: B65G 69/2876 Safety or protection means, e.g. skirts

Abstract

A seal for a vertically storing dock leveler employs a foam pad connected to the underside of the deck. As the leveller is lowered, the pad contacts the shelf on to which the leveller is mounted and deflects inward and compresses to seal the space between the underside of the leveller and the shelf. The pad is a tapered foam with a fabric covering.

Claims

1. A vertically storing dock leveler comprising:

a deck assembly, means at one end of said deck assembly to hingedly mount said deck assembly to a fixed surface, means to move said deck assembly from an upright stored position to a horizontal operative position;

a lip pivotally mounted to an opposite end of said deck assembly, means to move said lip and, a seal mounted on said deck assembly and carried thereby to close a space between said deck assembly and a floor when said deck assembly is in operative position and to separate from said floor when said deck assembly is in said upright stored position.

2. The vertically storing dock leveler of claim 1 wherein said seal extends over substantially the width of said deck assembly.

3. The vertically storing dock leveler of claim 1 wherein said seal comprises a resilient foam covered with fabric.

4. The vertically storing dock leveler of claim 1 wherein said seal comprises a wedge shaped resilient pad, said pad deflecting upon contact with said floor to close said space as the deck assembly is lowered.

5. The vertically storing dock leveler of claim 1 wherein said seal is mounted on the underside of the deck assembly at the opposite end.

6. The vertically storing dock leveler of claim 1 wherein said means to move said lip comprises an actuating cylinder mounted to deck assembly and an extensible cylinder rod mounted to said lip and wherein said seal has a gap to permit movement of cylinder rod.

7. The vertically storing leveler of claim 1 wherein said seal comprises a wedge shaped resilient pad covered with fabric, said seal deflecting and compressing upon contact with said floor to close said space as the deck assembly is lowered.

8. The vertically storing leveler of claim 1 further comprising side rails on the deck assembly to prevent a vehicle from running off the side of the leveler.

9. The vertically storing dock leveler of claim 1 wherein said seal comprises a tapered resilient pad, said pad angled inward with respect to the deck assembly whereby the pad deflects inward upon contact with said floor to close the space as said deck assembly is lowered.

10. The vertically storing dock leveler of claim 1 further comprising means to lock to deck assembly into said stored position.

11. A vertically storing dock leveler comprising:

a hingedly mounted deck assembly having at one end a movable lip;

means to move said deck assembly and said lip, said deck assembly mounted to a fixed surface including a generally horizontal floor, said deck assembly stored in a substantially vertical position and lowered into a substantially horizontal operative position, and a seal mounted on and carried by said deck assembly to close a space between said deck assembly and said floor when said deck assembly is in the operative position and to separate from said floor when said deck assembly is in said upright stored position.

12. The vertically storing dock leveler of claim 11 wherein said seal extends over substantially the width of said deck assembly.

13. The vertically storing dock leveler of claim 11 wherein said seal comprises a resilient foam covered with fabric.

14. The vertically storing dock leveler of claim 11 wherein seal comprises a wedge shaped resilient pad, said pad deflecting upon contact with floor to close said space as said deck assembly is lowered.

15. The vertically storing dock leveler of claim 11 wherein said seal is mounted on the underside of said deck assembly at the opposite end.

16. The vertically storing dock leveler of claim 11 wherein said means to move said lip comprises an actuating cylinder mounted to deck assembly and an extensible cylinder rod mounted to said lip and wherein said seal has a gap to permit movement of said cylinder rod.

17. The vertically storing leveler of claim 11 wherein said seal comprises a wedge shaped resilient pad covered with fabric, said seal deflecting and compressing upon contact with floor to close said space as the deck assembly is lowered.

18. The vertically storing leveler of claim 11 further comprising side rails on the deck assembly to prevent a vehicle from running off the side of said leveler.

19. The vertically storing dock leveler of claim 11 wherein said seal comprises a tapered resilient pad, said pad angled inward with respect to the deck assembly whereby said pad deflects inward upon contact with floor to close said space as the deck assembly is lowered.

20. The vertically storing dock leveler of claim 11 further comprising means to lock to the deck assembly in a stored position.