Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1989-07-11
1992-05-12
Ng, Jin F.
Communications: electrical
Condition responsive indicating system
Specific condition
340577, 340629, G08B 1710
Patent
active
RE0339202
ABSTRACT:
A smoke detector having variable sensitivity to smoke levels and using one button both to test the smoke detector and actuate a mode of diminished sensitivity to smoke levels. The smoke detector is operable in a normal sensitivity mode and a diminished sensitivity mode with rapid switching between the modes. The sensitivity to smoke levels is substantially constant when in either the normal or diminished sensitivity mode.
REFERENCES:
patent: 4097850 (1978-06-01), Conforti
patent: 4101046 (1978-07-01), Malinowski
patent: 4151522 (1979-04-01), Yamauchi
patent: 4222046 (1980-09-01), Pinckaers et al.
patent: 4300133 (1981-12-01), Solomon
patent: 4313110 (1982-01-01), Subulak et al.
patent: 4335378 (1982-06-01), Coleman
patent: 4383251 (1983-05-01), Perelli et al.
patent: 4401979 (1983-08-01), Dobrzanski
patent: 4477798 (1984-10-01), Saul et al.
patent: 4543815 (1985-10-01), Troup et al.
patent: 4567477 (1986-01-01), Cormier
patent: 4568924 (1986-02-01), Wuthrich et al.
patent: 4600314 (1986-07-01), Theriault
"Liefsaver Smoke Alarm" Owners Manual Sep. 1986; Fyrnetics Inc.; Elgin Ill. 60120.
"Lifesave Smoke Alarm" Owners Manual Jun. 1988; Fyrnetics Inc.
McCrink James
Tanguay William P.
Jackson Jill
Ng Jin F.
Seatt Corporation
LandOfFree
Smoke detector having variable level sensitivity 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 detector having variable level sensitivity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Smoke detector having variable level sensitivity will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2422493