Electricity: circuit makers and breakers – Electric switch details – Indicators
Patent
1980-01-11
1981-04-14
Shepperd, John W.
Electricity: circuit makers and breakers
Electric switch details
Indicators
200159B, H01H 916, H01H 1326
Patent
active
042621828
ABSTRACT:
A printed wire board has lamp socket holes and switch contact pairs adjacent the holes on the top surface of the board and lamp socket contacts adjacent the holes on its bottom surface. An insulating spacer sheet is adhered to the board and has apertures which are congruent with the switch contact pairs. A membrane, adhered to the top surface of the spacer, has lamp holes and short circuiting contacts on its bottom surface for being flexed through the apertures to bridge gaps between the contact pairs on the board. An apertured rigid plate is superposed over and spaced from the membrane. Combination light channel and switch operating plunger elements fit in the plate apertures and contact the membrane. A film on which switch operating touch zones are delineated is adhered to the plate.
REFERENCES:
patent: 1823319 (1931-09-01), Dickinson
patent: 3184569 (1965-05-01), McLaren
patent: 3584162 (1971-06-01), Krakinowski
patent: 3766350 (1973-10-01), Van Dyk et al.
patent: 3811025 (1974-05-01), Bach
patent: 3819895 (1974-06-01), Pittman et al.
patent: 3978297 (1976-08-01), Lynn et al.
patent: 4056701 (1977-11-01), Weber
patent: 4088855 (1978-05-01), Emery
Basler Peter H.
Schwehr Gregory D.
General Electric Company
Shepperd John W.
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