Photoelectric smoke sensor and lighting equipment

Details Photoelectric smoke sensor and lighting equipment Photoelectric smoke sensor and lighting equipment

2011-02-08

2011-02-08

Goins, Davetta W (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S628000, C340S693600, C250S574000, C356S438000

Reexamination Certificate

active

07884731

ABSTRACT:
The photoelectric smoke sensor includes a casing member1having an internal space S formed by a labyrinth wall1band an opening6communicating with the internal space S on a setting-face side; and a printed board8placed on the setting-face side of the casing member1and having a hole8aopposed to the opening6of the casing member1. The light emitting element2and the light receiving element4are mounted on the printed board8in such a fashion that the optical axes of the light emitting element2and the light receiving element4cross each other on one plane that is substantially parallel to an opening plane of the opening6. The photoelectric smoke sensor can be reduced in both size and cost with a simple construction.

REFERENCES:
patent: 4758733 (1988-07-01), Mochizuki
patent: 5400014 (1995-03-01), Behlke et al.
patent: 5587790 (1996-12-01), Nagashima
patent: 6396405 (2002-05-01), Bernal et al.
patent: 6737977 (2004-05-01), Nishikawa et al.
patent: 6756905 (2004-06-01), Rattman et al.
patent: 6778091 (2004-08-01), Qualey et al.
patent: 6914535 (2005-07-01), Matsukuma et al.
patent: 7248173 (2007-07-01), Yamasaki et al.
patent: 2597832 (2004-01-01), None
patent: 1691075 (2005-11-01), None
patent: 4-160697 (1992-06-01), None
patent: 9-231485 (1997-09-01), None
patent: 2000-235000 (2000-08-01), None
patent: 2005-309735 (2005-11-01), None

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