Backlit membrane keypad

Details Backlit membrane keypad Backlit membrane keypad

1994-09-30

1996-05-28

Walczak, David J.

Electricity: circuit makers and breakers

Electric switch details

Indicators

200310, H01H 900

Patent

active

055213456

ABSTRACT:
An illuminated switch assembly which is suitable for incorporation in a membrane keyboard or other switch array is provided. The membrane switch board is provided with a region through which light may pass about the switches. A light source is mounted proximate the switches with a reflector operatively associated therewith. Reflected light from the light source will be passed through the regions about the switch board illuminating an area that is to be pressed to operate the switch.

REFERENCES:
patent: 3777222 (1973-12-01), Harris
patent: 4197439 (1980-04-01), Mecklenburg
patent: 4376879 (1983-03-01), Nagata
patent: 4414452 (1983-11-01), Denley
patent: 4493958 (1985-01-01), Hamilton et al.
patent: 4772769 (1988-09-01), Shumate
patent: 4811175 (1989-03-01), Desmet
patent: 5138119 (1992-08-01), Demeo
patent: 5149923 (1992-09-01), Demeo
patent: 5280145 (1994-01-01), Mosier et al.

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