Contact device for a switch

Details Contact device for a switch Contact device for a switch

1989-03-21

1991-04-30

Recla, Henry J.

Electricity: circuit makers and breakers

Electric switch details

Contact

200319, H01H 360, H01H 152

Patent

active

050120530

ABSTRACT:
A contact structure of a switching device having a pivoted movable contact arm for reducing contact chatter, i.e., bounce, at the instant of closing or separation is given. Such chatter is mainly caused by clearances existing around pivots of the movable contact arm and operating mechanisms. A contact spring for applying a contact pressure when the switch is closed is provided between a portion of the movable contact arm at the other side of a contact in relation to the pivot of the movable contact and a stationary portion of the switching device. Also, a stopper is provided on a contact arm support member engagable with the contact arm at a side of the contact. With structure the movable contact arm and operating mechanisms are perfectly biased by the contact spring always in one direction and prevents free movement of the movable contact arm.

REFERENCES:
patent: 3646488 (1972-02-01), Iida et al.
patent: 4129762 (1978-12-01), Bruchet
patent: 4219740 (1980-08-01), Batteux et al.
patent: 4468533 (1984-08-01), Kodera et al.
patent: 4472701 (1984-09-01), Bellows et al.

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