Switch having dust-proof cover

Details Switch having dust-proof cover Switch having dust-proof cover

1988-02-26

1989-06-27

Luebke, Renee S.

Electricity: circuit makers and breakers

Electric switch details

Cases and bases

200339, H01H 2108

Patent

active

048431958

ABSTRACT:
A switch device which can surely prevent introduction of foreign articles past an opening at the top of a case without employing a cover made of a rubber material. The switch device includes a cover made of a synthetic resin material and mounted at the top of a casing on which a switch operating member is supported for pivotal motion and within which a conductor plate is mounted for rocking motion such that a tilting motion of the switch operating member will cause rocking motion of the conductor plate to make a switching operation of the switch device. The cover has an opening formed therein through which the switch operating member extends downwardly into the inside of the casing, and a pair of downwardly extending projected walls are formed on opposite peripheral edges of the opening of the cover while the switch operating member has a pair of semicylindrical flanges formed thereon which extend in a curve centered at the axis of pivotal motion of the switch operating member and are opposed to and engaged at upper faces thereof with the projected walls of the cover.

REFERENCES:
patent: 3742171 (1973-06-01), Howe
patent: 4319107 (1982-03-01), Haskins
patent: 4340791 (1982-07-01), Sorenson

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