Backlighted illuminated keyboard

Details Backlighted illuminated keyboard Backlighted illuminated keyboard

1983-05-03

1984-05-15

Shepperd, John W.

Electricity: circuit makers and breakers

Electric switch details

Indicators

200310, 200314, 362 26, 362 31, H01H 918

Patent

active

044490240

ABSTRACT:
A backlighted illuminated keyboard including a printed circuit board on which is mounted in a central location a single lamp easily replaceable from the backside of the board and which extends into a clear plastic light diffuser over which an overlay is disposed and a bezel is provided to define key areas in the translucent overlay such that the single lamp disperses light energy through the diffuser to light up the entire overlay. The single lamp is mounted in a socket formed in the printed circuit board and held in place by a swivel arm which can be swung to one side to allow ease of removal of the lamp.

REFERENCES:
patent: 2831282 (1958-04-01), Hardesty
patent: 2839670 (1958-06-01), Gladstone
patent: 3584162 (1971-06-01), Krakinowski
patent: 3590195 (1971-06-01), Driver
patent: 3755661 (1973-08-01), Bouvrande
patent: 3811025 (1974-05-01), Bach
patent: 4124879 (1978-11-01), Schoemer
patent: 4177501 (1979-12-01), Karlin
patent: 4197439 (1980-04-01), Mecklenburg et al.
patent: 4262182 (1981-04-01), Basler et al.
patent: 4320268 (1982-03-01), Brown
patent: 4343975 (1982-08-01), Sado
patent: 4349705 (1982-09-01), Kuhfus

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