Circuit breaker slow close mechanism and method of using same

Details Circuit breaker slow close mechanism and method of using same Circuit breaker slow close mechanism and method of using same

1993-08-09

1995-05-16

Luebke, Renee S.

Electricity: circuit makers and breakers

Contact moved by sudden release of stored energy,

200401, 741001, H01H 1370

Patent

active

054162874

ABSTRACT:
The present invention provides a mechanism for controlling the incremental release and subsequent resetting of a charging mechanism to slowly close an electrical contact operating mechanism of a circuit breaker. The slow close mechanism includes a frame defined by a pair of spaced, generally parallel sideplates connected together and terminating with support legs. The support legs have guide slots to receive a shaft of the charging mechanism. A support block rotatably connects between the sideplates and supports the shaft along the length of the guide slots as the support block rotates. An elongated arm slidingly couples to one of the support legs and has a flange at one end for manual operation. The opposite arm end rotatably couples to a crank arm extending through the one support leg to connect with the support block so that pulling the flange slides the arm and rotates the crank arm and the support block to control the travel of the shaft of the charging mechanism down the guide slots. Operation of a charging mechanism slowly closes the electrical contacts. Preferably, the present invention automatically resets the support block for the shaft of the charging mechanism.

REFERENCES:
patent: 3689720 (1972-09-01), Patel
patent: 3689721 (1972-09-01), McGuffie
patent: 3944772 (1976-03-01), Davies

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