Fire detector

Details Fire detector Fire detector

1975-02-07

1977-04-26

Caldwell, John W.

Communications: electrical

Systems

Call station

340249, 250389, 324 295, G08B 2100

Patent

active

040204790

ABSTRACT:
An improved early warning fire detector of the ionization type is provided wherein detection circuitry having adjustable sensitivity is connected to an ionization chamber responsive to products of combustion. A supervisory circuit monitors the unit to assure that power is applied to the unit, that the detecting circuitry is operative and that the unit is operating at the proper sensitivity.

REFERENCES:
patent: 3594751 (1971-07-01), Ogden
patent: 3786342 (1974-01-01), Molyneux
patent: 3886195 (1975-02-01), Ried
patent: 3899732 (1975-08-01), Staby

Affiliated with

Also associated with

Rating

Fire detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fire detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fire detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2090679