Detector with blinders

Details Detector with blinders Detector with blinders

2007-10-23

2007-10-23

Nguyen, Tai (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S540000, C340S521000, C340S523000, C340S511000, C340S555000, C340S556000, C702S062000

Reexamination Certificate

active

11104724

ABSTRACT:
A detector mountable on either a planar wall or an interior corner and having an adjustable field of view. The detector includes first and second sensors positioned to provide a horizontal field of view defining an angle of approximately 180 degrees. At least one blinder has a first position wherein the first and second sensors have a horizontal field of view defining an angle of approximately 180 degrees and a second position wherein the first and second sensors have a horizontal field of view defining an angle of approximately 90 degrees. A biasing member biases the blinder toward a first one of the first and second positions. A positioning member has a first member position wherein the positioning member biases the blinder toward the other of the first and second positions and a second member position wherein the biasing member biases the blinder into the first one of the first and second positions.

REFERENCES:
patent: 5567942 (1996-10-01), Lee et al.
patent: 5703368 (1997-12-01), Tomooka et al.
patent: 5739753 (1998-04-01), Porter
patent: 6697757 (2004-02-01), Eckel et al.
patent: 6987267 (2006-01-01), Monroe et al.
patent: 295 03 532 (1995-05-01), None
European Search Report mailed May 18, 2005.

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