Keyboard proximity switch

Details Keyboard proximity switch Keyboard proximity switch

1986-11-21

1988-05-03

Scott, J. R.

Electricity: circuit makers and breakers

Special application

235145R, H02B 108, H01H 908

Patent

active

047421916

ABSTRACT:
A keyboard proximity switch having a detecting face for detecting a position of a movable key member is disclosed. An operator controlled keyboard having a plurality of movable key members is modified by the addition of a proximity switch having no moving parts for each of said movable keys, thereby greatly increasing reliability and decreasing down time.

REFERENCES:
patent: 3588875 (1971-06-01), Gabor
patent: 3797630 (1974-03-01), Zilkha
patent: 4211935 (1980-07-01), Erben
patent: 4288836 (1981-09-01), Thornburg et al.
patent: 4336529 (1982-06-01), Buan
patent: 4500758 (1985-02-01), Guckenheimer

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