Compact snap action switch

Details Compact snap action switch Compact snap action switch

1985-07-26

1987-02-17

Marcus, Stephen

Electricity: circuit makers and breakers

Special application

Liquid or moisture responsive

200267, 200284, H01H 520

Patent

active

046441158

ABSTRACT:
A miniature snap action switch comprises a movable spring sheet which is pivotally supported to a common contact member for movement with a snap action into and out of contact with a cooperative fixed contact. The movable spring sheet is plated with a precious metal such as silver, gold, or an alloy of each at a portion to be pivoted to the common contact member as well as at a portion for contact with the fixed contact for improving electrical conductivity at the respective interfaces and at the same time defining on the movable spring sheet a movable contact of extremely reduced thickness. Accordingly, the movable spring sheet can be dispensed with a conventional contact tip of rather bulky configuration to thereby enable the entire contact assembly to be made in a greatly reduced dimensions particularly in the direction of the thickness of the movable spring sheet, resulting a very compact arrangement of the miniature switch.

REFERENCES:
patent: 2549998 (1951-04-01), Allison
patent: 2818734 (1958-01-01), Howe
patent: 3189703 (1965-06-01), Chapin et al.
patent: 3476898 (1969-11-01), Ehrenfels et al.
patent: 3548131 (1970-12-01), Piber
patent: 4005299 (1977-01-01), Keough
patent: 4032734 (1977-06-01), Burch
patent: 4523064 (1985-06-01), Rose

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