The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 1998
Filed:
Feb. 18, 1997
James C Alexander, London, CA;
United Dominion Industries, Inc., Charlotte, NC (US);
Abstract
A dock leveler, typically powered by an electric actuator or other motive source has a frame and a deck pivotally mounted to the frame. The source of power to move the deck is coupled to the underside of the deck. An extendable lip is pivotally mounted to one end of the deck and an arm assembly is coupled at one end to the lip and at another end to a crank carried by the deck to utilize movement of the deck to raise said lip into an extended position. A cam-latch arm is resiliently coupled to the arm assembly and selectively bearing on the crank by means of a spring coupling to the arm assembly. A linkage is coupled between the frame and said cam-latch arm to urge said cam-latch arm into contact with the crank as the deck is raised. This tends to cause movement between the cam portion and a roller on the crank which in turn provides a component of force to assist in raising said lip into the extended position.