Smoke detector having variable level sensitivity

Details Smoke detector having variable level sensitivity Smoke detector having variable level sensitivity

1987-03-05

1988-12-20

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340577, 340629, G08B 1710

Patent

active

047927976

ABSTRACT:
A smoke detector having variable sensitivity to smoke levels and using one button both to test the smoke detector and actuate a mode of diminished sensitivity to smoke levels. The smoke detector is operable in a normal sensitivity mode and a diminished sensitivity mode with rapid switching between the modes. The sensitivity to smoke levels is substantially constant when in either the normal or diminished sensitivity mode.

REFERENCES:
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patent: 4567477 (1986-01-01), Cormier
patent: 4568924 (1986-02-01), Wuthrich et al.
patent: 4600314 (1986-07-01), Theriault
"Lifesaver Smoke Alarm"; 1982, by Fyrnetics, Inc.; Elgin, IL 60120.

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