Pushbutton switch assembly for telecommunications and other inpu

Details Pushbutton switch assembly for telecommunications and other inpu Pushbutton switch assembly for telecommunications and other inpu

1980-03-20

1982-05-04

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340365S, 361397, 174 685, H04M 150

Patent

active

043283993

ABSTRACT:
A pushbutton switch assembly has at least one of the conventional PCB's replaced by a porcelain coated steel plate. The contact circuit for the pushbutton switches is formed on the top surface of the steel plate. It is also possible to replace both PCB's of a conventional switch by forming a second circuit on the under surface of the steel plate, with the electrical devices mounted thereon. Use of the steel plate enables the normal metal mounting plate to be omitted.

REFERENCES:
patent: 2412624 (1946-12-01), Mallina
patent: 3290439 (1966-12-01), Willcox et al.
patent: 3296099 (1967-01-01), Dinella
patent: 3439255 (1969-04-01), Carnes et al.
patent: 3469729 (1969-09-01), Grekila et al.
patent: 3641254 (1972-02-01), Bunting et al.
patent: 3745095 (1973-07-01), Chadwick et al.
patent: 3934335 (1976-01-01), Nelson
patent: 4033030 (1977-07-01), Robinson et al.

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