High ampacity pinless conducting joint in movable contact arm as

Details High ampacity pinless conducting joint in movable contact arm as High ampacity pinless conducting joint in movable contact arm as

1998-12-31

2000-01-18

Friedhofer, Michael

Electricity: circuit makers and breakers

Electric switch details

Contact

218 32, 218146, 335 16, H01H 930

Patent

active

06015957&

ABSTRACT:
An air circuit breaker movable contact arm assembly is presented. The movable contact arm assembly comprises an electrically-conductive support having at least one slot formed therein to receive a first end of the movable contact arm. The movable contact arm comprises first and second sides which face side walls of the electrically-conductive support within the slot. A spring washer is disposed at the first end of the movable contact arm and loads the second side of the movable contact arm against one side wall of the electrically-conductive support to form a variably conducting joint therebetween. By using a spring washer, the movable contact arm pivotally engages the other facing side wall of the electrically-conductive support to provide a variable pivot point. The variable pivot point of the contact arm assembly permits an additional degree of freedom allowing the movable contact arm to rotate about a separate, variable pivot point.

REFERENCES:
patent: 2606983 (1952-08-01), Rypinski
patent: 3264442 (1966-08-01), Holzer
patent: 3286067 (1966-11-01), Menickella et al.
patent: 4864261 (1989-09-01), Kandatsu
patent: 5032813 (1991-07-01), Gula et al.

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