Operation setting device having stationary touch-sensitive contr

Details Operation setting device having stationary touch-sensitive contr Operation setting device having stationary touch-sensitive contr

1980-02-19

1982-06-08

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340365C, 340365UL, G09G 300

Patent

active

043342191

ABSTRACT:
The operation setting device includes a keyboard having stationary control keys arranged on a transparent support plate of insulating material, each key of the keyboard being formed of a pair of transparent electrically conductive material secured to the outer face of the support plate and being connectable to a switching device sensitive to a change of resistance between the contacts in each pair. A visual identification card is located behind the support plate and having its indentification signs in register with respective keys.

REFERENCES:
patent: 3187321 (1965-06-01), Kameny
patent: 3956745 (1976-05-01), Ellis
patent: 4055735 (1977-10-01), Eachus et al.
patent: 4055755 (1977-10-01), Nakamura et al.
patent: 4078257 (1978-03-01), Bagley
patent: 4088837 (1978-05-01), Singer
patent: 4202038 (1980-05-01), Peterson
patent: 4242676 (1980-12-01), Piguet et al.

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