Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2008-01-29
2008-01-29
Lieu, Julie Bichngoc (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S660000, C250S573000, C250S574000
Reexamination Certificate
active
07324004
ABSTRACT:
A method for reducing false detects may include emitting an infrared light beam from a primary emitter to a primary monitor detector, measuring a first voltage value using a primary receive detector and setting a primary smoke alarm flag corresponding to a primary channel if the first voltage value is above a first threshold value. The method may also include measuring a second voltage value using a secondary receive detector, setting a secondary smoke alarm flag corresponding to a secondary channel if the second voltage value is above a second threshold value and setting an alarm indicating a smoke condition if the primary smoke alarm flag and the secondary smoke alarm flag are set.
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PCT International Search Report PCT/US2004/035494.
Bunn Andrew D.
Cornejo Maria M.
Fujawa Timothy L.
Lohmeier John
Lowery Lester J.
Honeywell International , Inc.
Ingrassia Fisher & Lorenz
Lieu Julie Bichngoc
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