Vertically-storing dock leveler apparatus and method

• US 7,100,233 B2
• Filed: 05/27/2004
• Issued: 09/05/2006
• 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:
  US10/854,335
• Publication Number:
  US 20050011021A1
• Time in Patent Office: 831 Days
• Field of Search: None
• 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 lip assembly for pivoting a lip about a deck assembly of a vertical storing dock leveler comprising:

a lip pivotally connected to the deck assembly and movable between a pendant position generally perpendicular to the deck assembly and an extended position generally parallel to the deck assembly;

a latch link pivotally connected to the lip at one end of the latch link and the other end of the latch link having at least one engaging surface;

a crank arm connected to the latch link at one end of the crank arm and another end of the crank arm is connected to the deck assembly; and

biasing means configured to urge the crank arm to urge the latch link to urge the lip to the extended position.

2. The lip assembly of claim 1, further comprising a latch lug mounted on the deck assembly and configured to engage an engaging surface on the latch link when the lip is in the extended position and prevent the lip from rotating to the retracted position.

3. The lip assembly claim 1, further comprising a latch block mounted on the deck assembly and configured to engage an engaging surface on the latch link when the lip is in the pendant position and prevent the lip from moving to the extended position.

4. The lip assembly of claim 1, wherein the biasing means is a spring.

5. A method of operating a dock leveler comprising:

inserting a lip actuator into a lip actuator receiver;

rotating the lip by rotating the lip actuator; and

lowering a dock leveler from a substantially vertical position.

6. The method of claim 5, wherein the lip actuator receiver includes a hole in the lip.

7. The method of claim 5, further comprising holding the lip in the extended position with a spring that also biases the deck assembly.

8. The method of claim 5, further comprising dampening the movement of the lip to a pendant position with a shock absorber.

9. The method of claim 5, wherein the lip actuator receiver includes an elongated hole.

10. The method of claim 5, further comprising disengaging a lip latch from a latch bar once the lip rotates past a predetermined point.