Keyboard switch assembly having internal gas passages preformed

Details Keyboard switch assembly having internal gas passages preformed Keyboard switch assembly having internal gas passages preformed

1975-09-22

1977-09-06

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159B, 200306, 200302, H01H 1304

Patent

active

040469751

ABSTRACT:
Sealed keyboard sandwich having actuator means, a plurality of contactor means, a plurality of contact means and support means therefore, said contacts and contactors forming a plurality of key units, and gas passage means positioned between said actuator means and said support means for selectively permitting the flow of trapped gas from the key units upon depression of a portion thereof. In the preferred structure the sandwich is hermetically sealed from the outside atmosphere.

REFERENCES:
patent: 3383487 (1968-05-01), Wiener
patent: 3393284 (1968-07-01), Goble
patent: 3590195 (1971-06-01), Driver
patent: 3617660 (1971-11-01), Krakinowski
patent: 3718791 (1973-02-01), Szablowski
patent: 3723673 (1973-03-01), Clary et al.
patent: 3829632 (1974-08-01), Klehm, Jr.
patent: 3860771 (1975-01-01), Lynn et al.
patent: 3898421 (1975-08-01), Suzumura
IBM Technical Disclosure Bulletin, Lester, J.R., et al.; "Switch", Apr. 1969, vol. 11, No. 11, p. 1569.

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