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:
Aug. 16, 1983
Filed:
Dec. 21, 1981
Joseph R Driear, Thiensville, WI (US);
Jonathan W Kovach, Milwaukee, WI (US);
Kelley Company, Inc., Milwaukee, WI (US);
Abstract
A yieldable and releasable lip lifting mechanism for a dockboard. The dockboard includes a ramp which is pivoted at its rear edge to a supporting structure, and a lip is hinged to the forward edge of the ramp and is movable between a downwardly hanging pendant position and an extended position. As the ramp is walked down from an inclined position toward a horizontal position, a lip lifting mechanism becomes operative to raise the lip and hold the lip in the extended position. A yieldable connection is incorporated in the lip lifting mechanism which enables the lip lifting mechanism to yield and fall out of supporting engagement when a substantial force is applied to the extended lip. In addition, the yieldable connection can be manually released by an operator to permit the lip to fall to its pendant position.