Illuminated electric switches

Details Illuminated electric switches Illuminated electric switches

1979-02-16

1980-09-09

Marcus, Stephen

Electricity: circuit makers and breakers

Electric switch details

Indicators

116258, 200317, 200323, H01H 914

Patent

active

042219450

ABSTRACT:
In an illuminated rotary electric switch, for use in a motor vehicle to indicate the location of the switch, its condition of operation, and, if desired, its function, a manually rotatable switch member is provided with a central opening arranged so that light can be projected longitudinally therethrough from a single light source so as to indicate the location of the switch (and its function, if desired) and with a further opening which can be brought into and out of registration with an aperture in a fixed portion of the switch through which light from said source can be projected laterally, so as thereby to uncover or mask said aperture and thus indicate the condition of operation of the switch.

REFERENCES:
patent: 1882584 (1932-10-01), Hayden
patent: 2144138 (1939-01-01), Batcheller
patent: 2798924 (1957-07-01), Kimball
patent: 3377452 (1968-04-01), Bock et al.

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