Key switch

Details Key switch Key switch

1975-11-14

1977-12-13

Hohauser, Herman

Electricity: circuit makers and breakers

Liquid contact

Time delay

200 16A, 200275, H01H 920

Patent

active

040630544

ABSTRACT:
A key switch provided with plural elastic elements to be actuated in succession in response to the operation of key top by finger and composed to perform opening or closing operation when at least two of said elastic elements are actuated thereby reducing bouncing or chattering.

REFERENCES:
patent: 3448226 (1969-06-01), Mading et al.
patent: 3688066 (1972-08-01), Adelson et al.
patent: 3870840 (1975-03-01), Rivetta et al.
patent: 3909564 (1975-09-01), Scheingold et al.
patent: 3969595 (1976-07-01), Johnson

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