Composite sensor for door

Communications: electrical – Condition responsive indicating system – Specific condition

Reexamination Certificate

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C340S522000, C340S523000, C340S555000, C250S221000

Reexamination Certificate

active

07064666

ABSTRACT:
A radio-wave transmitter-receiver section (12) forms a radio-wave detection zone (16) for detecting an object at a location way from a door (4). A light emitter-receiver section (20) forms an optical detection zone (42) for detecting an object at a location along and closer to the door (4). The light emitter-receiver section (20) includes mirrors (28, 36) which are used to increase or decrease the depth dimension of the optical detection zone (42) in the direction perpendicular to the door (4).

REFERENCES:
patent: 3852592 (1974-12-01), Scoville et al.
patent: 4317117 (1982-02-01), Chasek
patent: 4577437 (1986-03-01), Gionet et al.
patent: 4967083 (1990-10-01), Kornbrekke et al.
patent: 5142152 (1992-08-01), Boiucaner
patent: 5914655 (1999-06-01), Clifton et al.
BEA Sensors, Activ8 Three On User's Manual, Sep. 28, 2002, www.beasensors.com.
BEA Sensors, Activ8 Three Technical Specification, Sep. 28, 2002, www.beasensors.com.
B.E.A. ACTIV8 .3 motion sensor, product information, 2 pages.

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