Axial load resistant key switch

Details Axial load resistant key switch Axial load resistant key switch

1987-11-16

1989-02-07

Luebke, Renee S.

Electricity: circuit makers and breakers

Solid contact

Membrane type

200294, 200406, H01H 114, H01H 902

Patent

active

048033219

ABSTRACT:
A short travel key switch comprising an electrically insulating base having a bottom and a cylindrical lateral wall defining a cavity closed by a cap. A central contact and a lateral contact are mounted on the bottom. The periphery of a switching element received in the cavity is in electrical contact with the lateral contact. The element is elastically yieldable to establish an electrical connection between the two contacts in response to an axial load exerted on its convex face by the facing portion of an actuator. The central contact is mounted flush with a plane central portion of the bottom. The facing portion of the actuator which engages the central contact is flat.

REFERENCES:
patent: 3777090 (1973-12-01), Muller
patent: 4352963 (1982-10-01), De Filippis et al.
patent: 4418257 (1983-11-01), Muller et al.
patent: 4484042 (1984-11-01), Matsui

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