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:
Dec. 22, 1987
Filed:
Jan. 09, 1987
Thomas E Arzenti, Munhall, PA (US);
William E Pirl, Penn Township, Westmoreland County, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A gripper assembly whose gripping member is a thin (0.050' to 0.060') pliable elastometer, typically of a Pelethane compound having high coefficient of friction with respect to the surface to be gripped. The assembly includes a hollow retainer formed of abutting retainer sections. Internally the sections form a circularly cylindrical surface. The gripping member is circularly cylindrical and is mounted on the retainer so that it extends over the internal cylindrical surface. The ends of the gripping member have rings which are sealed pressure-tight in slots in the end surfaces of the retainer. Within the gripping member there is a cage formed of rods joined by rings for centering an object to be gripped by windows and defined between the rods and rings of the cage. The retainer has a port through which a fluid (air) under pressure is injected. The retainer has a slot connected to the port so that the fluid is distributed over the region between the gripping member and the internal surface of the retainer causing the gripping member to exert pressure on the object to be gripped.