Keyboard device

Details Keyboard device Keyboard device

1979-12-06

1982-03-30

Moses, Richard L.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159B, 200302, 200340, H01H 926

Patent

active

043225870

ABSTRACT:
A keyboard has a planar surface with depressions formed therein. Switch devices of the type which provide tactile feedback are aligned with the depressions. Exertion of downward force on the base of the depressions will cause switch contacts to be closed with a snap-action to generate an information bearing signal.

REFERENCES:
patent: 3723673 (1973-03-01), Clary et al.
patent: 3860771 (1975-01-01), Lynn et al.
patent: 4046975 (1977-09-01), Seeger, Jr.
patent: 4066850 (1978-01-01), Heys, Jr.
patent: 4127752 (1978-11-01), Lowthorp
patent: 4237351 (1980-12-01), Boulanger et al.

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