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:
Sep. 01, 1992
Filed:
Jul. 19, 1991
Franklin D Harsch, Renton, WA (US);
Gary W Gwin, Langley, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
A piston rod (32) retracts to close gripper jaws (50, 52) and cutting jaws (54, 56) and then to pivot the two pairs of jaws away from each other. The upper jaw (50, 54) of each pair is connected to a corresponding actuating lever (78). The levers (78) are pivotally mounted on a housing and are connected to an end connector (42) on the rod (32) by a flexible chain (94) which engages sprocket wheels (92) carried by the levers (78). Retraction of the rod (32) exerts a pulling force on the levers (78) to pivot the levers (78) toward each other. The pulling force has a component parallel to the actuating axis and a perpendicular component to maintain mechanical advantage.