Alarm unit

Details Alarm unit Alarm unit

2011-04-19

2011-04-19

Lieu, Julie (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S629000, C340S630000, C340S584000, C340S693100, C340S693200, C340S577000

Reexamination Certificate

active

07928853

ABSTRACT:
An alarm unit, for sounding an alarm on detection of a fire emergency condition, which comprises a smoke detector, an alarm indicator and a heat detector wherein the smoke detector is capable of receiving power from a first power source and the heat detector is capable of receiving power from a second power source.

REFERENCES:
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patent: 3872355 (1975-03-01), Klein et al.
patent: 4027302 (1977-05-01), Healey et al.
patent: 4363556 (1982-12-01), Belliveau et al.
patent: 4521645 (1985-06-01), Carroll
patent: 4717910 (1988-01-01), Scripps et al.
patent: 6084522 (2000-07-01), Addy
patent: 6084552 (2000-07-01), Robertson et al.
patent: 2002/0011570 (2002-01-01), Castleman
patent: 296 08 999 (1996-09-01), None

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