Smoke alarm activated light

Details Smoke alarm activated light Smoke alarm activated light

1982-09-27

1986-02-11

Rowland, James L.

Communications: electrical

Condition responsive indicating system

With particular coupling link

315156, 315241S, 340331, 340628, 362 86, G08B 100, G08B 500

Patent

active

045701555

ABSTRACT:
A portable light for emergency illumination which is activated in response to the sound emitted by a smoke alarm device, which light has an efficient and reliable battery conserving circuit. The present light includes a switch interconnecting a battery and a light bulb for selectively activating the light bulb and a circuit interconnecting a microphone and the switch for selectively activating the switch in response to a smoke alarm signal. A strobe circuit interconnects the source of power and the circuit for periodically activating the circuit which, therefore, draws power for only a small fraction of the time.

REFERENCES:
patent: 4029994 (1977-06-01), Iwans
patent: 4042919 (1977-08-01), Patty
patent: 4074225 (1978-02-01), Vandeweghe
patent: 4283657 (1981-08-01), Gordon et al.
patent: 4417235 (1983-11-01), Del Grande
patent: 4419658 (1983-12-01), Jarosz et al.
patent: 4438428 (1984-03-01), Ober et al.
patent: 4450436 (1984-05-01), Massa

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