Illuminating device for a push-button switch

Details Illuminating device for a push-button switch Illuminating device for a push-button switch

1981-05-06

1983-05-24

Shepperd, John W.

Electricity: circuit makers and breakers

Electric switch details

Indicators

200310, 200313, H01H 916

Patent

active

043852211

ABSTRACT:
A device for illuminating at least one hood-shaped push button, provided with a transparent surface, of a push-button switch having at least one source of light and having light-guide means acted on by the source. In the hood-shaped push button there is a light-conducting prism whose active illuminating surface is adjacent the light transparent area of the push button, two additional surfaces of the prism being coordinated to the source of light and formed such that the prism is illuminated by the source of light indirectly in one position of the push button and directly in the other position of the push button.

REFERENCES:
patent: 2437555 (1948-03-01), Rees
patent: 2766373 (1956-10-01), Gebel
patent: 3169506 (1965-02-01), Morris
patent: 3377452 (1968-04-01), Bock et al.
patent: 3584174 (1971-06-01), Sprando
patent: 3780248 (1973-12-01), Martin
patent: 4104981 (1978-08-01), Ono et al.
patent: 4131777 (1978-12-01), Bailey et al.

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