Illuminated membrane switch

Details Illuminated membrane switch Illuminated membrane switch

1982-09-28

1985-01-15

Shepperd, John W.

Electricity: circuit makers and breakers

Electric switch details

Indicators

200 5A, H01H 918

Patent

active

044939582

ABSTRACT:
An illuminated membrane switch assembly lighted by a contained rearwardly positioned bulb unit. A membrane switch is actuated by a small reciprocable transparent plunger with an illuminated graphics bearing overlay on its forward surface. Light is transmitted axially from the rear of the switch around the periphery of conductive areas on the membranes to the transparent plunger without any shadowing.

REFERENCES:
patent: 4163883 (1979-08-01), Boulanger
patent: 4177501 (1979-12-01), Karlin
patent: 4262182 (1981-04-01), Basler et al.
patent: 4288672 (1981-09-01), Puccini
patent: 4343975 (1982-08-01), Sado
patent: 4349705 (1982-09-01), Kuhfus

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