Interconnection of alarms of smoke detectors with distinguishabl

Details Interconnection of alarms of smoke detectors with distinguishabl Interconnection of alarms of smoke detectors with distinguishabl

1977-10-06

1981-08-04

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

340629, G08B 1710, G08B 2100

Patent

active

042825199

ABSTRACT:
A smoke detection alarm system which has at least one detector and alarm in each of the plurality of areas with an interconnection circuit whereby upon the detection of an abnormal smoke condition in any one of the areas, the annunciator or horn of the detector in the area having the abnormal condition is operated with a steady tone and the annunciators of the other detectors in other areas are operated in an intermittent tone so that an occupant of an area can determine by the sound of the tone from the annunciator whether the abnormal condition is in the area in which he is located or in a remote area.

REFERENCES:
patent: 3832552 (1974-08-01), Larsen et al.
patent: 4019139 (1977-04-01), Ortega
RCA Digital Integrated Circuits, Application Note ICAN-6267, Nov. 1973, pp. 531-533.

Affiliated with

Also associated with

Rating

Interconnection of alarms of smoke detectors with distinguishabl does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Interconnection of alarms of smoke detectors with distinguishabl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interconnection of alarms of smoke detectors with distinguishabl will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-242715