Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1976-09-24
1978-07-18
Caldwell, Sr., John W.
Communications: electrical
Condition responsive indicating system
Specific condition
169 60, 340540, 169 61, G05B 2300
Patent
active
041018877
ABSTRACT:
An electrical fire protection system including a plurality of extinguishant filled suppressor units activatable by explosive squibs connected in series. In response to the detection of an abnormal condition associated with fires, a control circuit initiates an activating current flow that detonates the explosive squibs and induces release of the extinguishant from the suppressor units. A supervisory current supply establishes through the series connected squibs, a constant level of supervisory current flow that is insufficient to induce detonation of the squibs but establishes a detectable voltage drop thereacross. In response to the detection of an abnormally high voltage level across the series connected squibs, a switching circuit switches the squibs from a series to a parallel circuit relationship.
REFERENCES:
patent: 3562730 (1971-02-01), Hill et al.
patent: 3641547 (1972-02-01), Reiss et al.
patent: 3786501 (1974-01-01), Marnerakis
patent: 3797008 (1974-03-01), Yuasa
patent: 3886932 (1975-06-01), Suessmilch
patent: 3952809 (1976-04-01), Osborne
Caldwell Sr. John W.
Crosland Donnie L.
Toupal John E.
Walter Kidde and Co., Inc.
LandOfFree
Monitored fire protection system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Monitored fire protection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monitored fire protection system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-342123