Apparatus for detecting the fault of indicating lamps

Details Apparatus for detecting the fault of indicating lamps Apparatus for detecting the fault of indicating lamps

1974-11-11

1976-11-16

Waring, Alvin H.

Communications: electrical

Selective

Having indication or alarm

340251, 315 82, B60Q 100

Patent

active

039926958

ABSTRACT:
In an indicating lamp circuit wherein a plurality of indicating lamps are each connected in series with a plurality of switches which respond to the operating condition of a motor car, each lamp is energized by a power source through a switch adapted to close only when an engine for driving the motor car stops. Upon energization faulty lamps are not illuminated so that their faulty condition is automatically detected when the engine is not in operation.

REFERENCES:
patent: 3514751 (1970-05-01), Pascente
patent: 3566401 (1968-07-01), Smith et al.
patent: 3631393 (1971-12-01), Bennett
patent: 3641488 (1972-02-01), Mullin
patent: 3671955 (1972-06-01), Malekzadeh

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