Fire detector

Details Fire detector Fire detector

2011-07-12

2011-07-12

Bugg, George A (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C250S574000, C340S577000

Reexamination Certificate

active

07978087

ABSTRACT:
A fire detector operating by the scattered radiation principle is described, having at least one radiation transmitter and at least one radiation receiver, whose beam paths form a scattering volume. The fire detector includes, in addition to at least one first radiation transmitter and one first radiation receiver, at least one second radiation transmitter and one second radiation receiver, whose beam paths form at least two spatially separated scattering volumes.

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