Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1998-12-17
2000-06-13
Lieu, Julie
Communications: electrical
Condition responsive indicating system
Specific condition
3406935, 3406936, 340539, 169 56, 169 61, G08B 1710
Patent
active
060754478
ABSTRACT:
A smoke detection system is provided including a plurality of smoke detector units each having a casing, an outlet cable, and an input cable. The cables of the smoke detector units are each connected end to end. Each smoke detector unit has a smoke detector for generating an activation signal upon the detection of smoke. An alarm unit is connected to the smoke units for generating an alert upon the receipt of the activation signal.
REFERENCES:
patent: 4623878 (1986-11-01), Schoenwetter
patent: 5018586 (1991-05-01), Cawley
patent: 5031702 (1991-07-01), Trumbach
patent: 5396221 (1995-03-01), Bridges
patent: 5821865 (1998-10-01), Solak
patent: 5880676 (1999-03-01), Tsou
Bliss Steven H.
Nightingale Michael S.
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