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:
Feb. 05, 1991
Filed:
Jun. 30, 1989
Kurt A Grunert, Beaver, PA (US);
Charles R Paton, New Brighton, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A power drive mechanism for a circuit breaker handle which includes a reversible electrical motor, a carriage assembly and a cooperating slide plate assembly mechanically coupled to the motor shaft. The carriage assembly includes a pivotally mounted L-shaped lever, interlocked with the circuit breaker operating handle for driving the operating handle to an on position or alternatively to an off position on command. Microswitches are located at both the on position and the off position for controlling operation of the motor. The microswitches are actuated by the slide plate assembly which, in turn, is driven by the carriage assembly. The slide plate assembly is slidably mounted with respect to the carriage assembly with one or more wave washers. The slide plate assembly provides mechanical damping for the carriage assembly to minimize damage to the microswitches. The slide plate assembly also prevents the contacts in the limit switch from bouncing even though the carriage assembly may oscillate at the end of travel.