Detection of products of combustion

Details Detection of products of combustion Detection of products of combustion

1973-07-13

1976-07-20

Caldwell, John W.

Communications: electrical

Systems

Call station

340228R, 340249, G08B 1710

Patent

active

RE0289159

ABSTRACT:
A self-contained, self-powered, early warning fire detector and alarm of small size and attractive appearance especially adapted for use in residences; the detector including readily accessible sensitivity control and operability test means, and having a standby power source which additionally serves to monitor the primary power source and inform occupants of malfunction of the primary power source.

REFERENCES:
patent: 1990659 (1935-02-01), Lindsey
patent: 2408051 (1946-09-01), Donelian
patent: 2870434 (1959-01-01), Schulze
patent: 2880390 (1959-03-01), Calvert
patent: 3150359 (1964-09-01), Hoey
patent: 3155951 (1964-11-01), Duenke
patent: 3189788 (1965-06-01), Cady
patent: 3235857 (1966-02-01), Bagno
patent: 3245067 (1966-04-01), Blevins
patent: 3255441 (1966-06-01), Goodwin et al.
patent: 3349386 (1967-10-01), Zug
patent: 3409885 (1968-11-01), Hall
patent: 3422337 (1969-01-01), Carson

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