Audiovisual signaling device

Details Audiovisual signaling device Audiovisual signaling device

1976-12-27

1978-07-18

Caldwell,, Sr.,

Communications: electrical

Systems

Plural

315241S, 340331, 340371, 340384E, G08B 700

Patent

active

041018800

ABSTRACT:
An audiovisual signaling device including an auditory signaling means, an inductor for energizing the signaling device, and a circuit interruptor in series circuit with the inductor. A flashtube is electrically connected to the inductor and interruptor, and the inductor acts as an electromagnet when a voltage is impressed across the inductor and interruptor. The series circuit is intermittently interrupted by the interruptor, and the flashtube is actuated in response to the decaying magnetic field of the inductor when the circuit is thus interrupted.

REFERENCES:
patent: 2809366 (1957-10-01), Van Boort et al.
patent: 3145375 (1964-08-01), Webb
patent: 3618079 (1971-11-01), Denning et al.
patent: 3774186 (1973-11-01), Enemark
patent: 3810149 (1974-05-01), Miller et al.
patent: 3866211 (1975-02-01), Curtis
patent: 3916404 (1975-10-01), Gouge

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