Smoke detector

Details Smoke detector Smoke detector

2011-04-19

2011-12-13

Bugg, George (Department: 2612)

Communications: electrical

Systems

Audible signals

C340S610000, C340S629000, C340S630000, C340S631000, C340S632000, C250S288000, C250S339020, C250S343000, C073S023310, C073S024030, C073S028010, C073S028020, C073S028030

Reexamination Certificate

active

08077018

ABSTRACT:
To enable an air velocity of sampling air to be precisely measured, a smoke detector (S) includes: a smoke detection part (22) connected to a sampling pipe (11); a fan (12) that sucks sampling air (SA) into the sampling pipe; and an air velocity sensor (15) that measures an air velocity of the sampling air within the sampling pipe. The air velocity sensor (15) is disposed at a primary side of the fan (12), and a straightening vane (25) is disposed between the air velocity sensor (15) and a suction port (12a) of the fan (12).

REFERENCES:
patent: 2004/0035184 (2004-02-01), Yamano et al.
patent: 1485609 (2004-03-01), None
patent: 2000-509535 (2000-07-01), None
patent: 2004-78807 (2004-03-01), None
patent: 97/42486 (1997-11-01), None
Partial European Search Report (in English language) issued Jul. 6, 2009 in European Patent Application No. 09 25 0784.

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