Switch assembly

Details Switch assembly Switch assembly

1983-04-07

1984-12-25

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159B, H01H 1370

Patent

active

044905874

ABSTRACT:
A switch assembly comprising a flexible face cover membrane; a flexible keyboard membrane positioned immediately below the face cover membrane and including a base portion and a plurality of raised hollow contact pad portions projecting upwardly from the base portion through openings in the face cover member; a flexible printed circuit board membrane positioned below the keyboard membrane for switching coaction with the contact pad portions of the keyboard membrane; and adhesive means bonding the membranes together into a thin, flexible sealed switch sandwich. In one embodiment of the invention, the keyboard membrane is formed of a non-conductive elastomeric material and conductive elastomeric buttons are secured to the underside of the contact pad portions of the keyboard membrane for coaction with printed circuitry on the upper surface of the circuit board membrane.

REFERENCES:
patent: 3699294 (1972-10-01), Sudduth
patent: 3728509 (1973-04-01), Shimojo
patent: 3898421 (1975-08-01), Suzumura
patent: 3932722 (1976-01-01), Obata et al.
patent: 4289940 (1981-09-01), Sado et al.
patent: 4317011 (1982-02-01), Mazurk
patent: 4390765 (1983-06-01), Sado et al.
patent: 4435796 (1984-03-01), Saito et al.

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