Key switch with snap-action contact and resilient actuator

Details Key switch with snap-action contact and resilient actuator Key switch with snap-action contact and resilient actuator

1980-11-28

1982-02-16

Shepperd, John W.

Electricity: circuit makers and breakers

Capacitive switch

200159A, 200 5A, 200292, H01H 520, H01H 1338

Patent

active

043160662

ABSTRACT:
A key switch for data-entry keyboards and the like, the switch having a housing supporting a snap-action spring with a movable contact positioned adjacent a fixed contact on the housing. An actuator leaf spring is anchored at one end to the housing, and has a free end which is movable to drive the snap-action spring between first and second bi-stable positions to operate the switch. A keystem is slidably supported in the housing, and has a portion in contact with the actuator spring so depression of the keystem displaces the actuator spring to drive the snap-action spring.

REFERENCES:
patent: 3062932 (1962-11-01), Korsgren et al.
patent: 3281552 (1966-10-01), Tennant
patent: 3800104 (1974-03-01), Lien et al.
patent: 3899648 (1975-08-01), Murata
patent: 3909564 (1975-09-01), Scheingold et al.
patent: 3989914 (1976-11-01), Stearley et al.
patent: 4032728 (1977-06-01), Oelsch
patent: 4099037 (1978-07-01), Hartzler et al.
patent: 4177367 (1979-12-01), Tirone et al.

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