Motor starting switch

Details Motor starting switch Motor starting switch

2007-01-16

2007-01-16

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

Solid contact

Rocking actuator

C200S557000, C200S559000

Reexamination Certificate

active

11326688

ABSTRACT:
An electrical switch is disclosed having improved operational characteristics wherein when a operating handle is rotated from an OFF position to an ON position the switch provides slow motion which accelerates as the operating handle is rotated to a full open position and then provides rapid establishment of electrical contact. The operating handle having a cam that when rotated from the ON position to the OFF position forces a cam follower downwards. As a result, a bridge having coil springs connected to the cam follower is forced downwards to separate at least one electrical contact placed in proximity to the bridge.

REFERENCES:
patent: 2901581 (1959-08-01), Russell
patent: 3206990 (1965-09-01), Uhl
patent: 3852552 (1974-12-01), Kimijima et al.
patent: 4107499 (1978-08-01), Weidler
patent: 4983960 (1991-01-01), Dunn
patent: 5473130 (1995-12-01), Pudims
patent: 5906272 (1999-05-01), Kurek

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