Smoke or fire detector

Details Smoke or fire detector Smoke or fire detector

1984-12-31

1986-10-14

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

340629, 340630, G08B 1710

Patent

active

046175601

ABSTRACT:
This invention is a smoke or fire detector that first utilizes a signal that is indicative of a detected smoke or fire condition to operate an air moving device to purge the detectors photocell or ionization chamber and to thereafter allow an additional signal indicative of a detected smoke or fire condition within a predetermined time frame to provide an alarm signal. The smoke or fire detector avoids many false alarm situations by placing a cyclic purge switching control system between the smoke or fire detector and the alarm signal device. The cyclic purge switching control system sequentially connects the signal indicative of a detected smoke or fire condition between the air moving device such as a fan and the alarm signal device.

REFERENCES:
patent: 3209343 (1965-09-01), Dunham et al.
patent: 3948202 (1976-04-01), Voshikawa
patent: 4097851 (1978-06-01), Klein
patent: 4238677 (1980-12-01), Hugon

Affiliated with

Also associated with

Rating

Smoke or 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 Smoke or fire detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Smoke or fire detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1343147