Smoke detector

Details Smoke detector Smoke detector

1992-11-05

1995-04-25

Peng, John K.

Communications: electrical

Condition responsive indicating system

Specific condition

340629, 340630, 340632, 126299R, G08B 1710

Patent

active

054102995

ABSTRACT:
An improved smoke detector in combination with a fan assembly for reducing the likelihood of smoke detector activation by ambient smoke, has a fan with a timer controlling the fan's motor to automatically shut off the fan either when the time has expired or if the timer fails.

REFERENCES:
patent: 3826180 (1974-07-01), Hayashi
patent: 4383251 (1983-05-01), Perelli et al.
patent: 4600314 (1986-07-01), Theriault
patent: 5300923 (1994-04-01), Gruber

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