Photoelectric smoke detector with improved testing means

Details Photoelectric smoke detector with improved testing means Photoelectric smoke detector with improved testing means

1991-01-25

1992-12-08

Ng, Jin F.

Communications: electrical

Condition responsive indicating system

Specific condition

340635, 340515, 250574, 356338, 324158R, G08B 1710

Patent

active

051701502

ABSTRACT:
An improved smoke detector incorporating means for verifying the detector's smoke sensitivity limits, such verification means including means for positively positioning various light reflecting surfaces to provide predetermined light reflection onto light sensing means to create simulated smoke levels.

REFERENCES:
patent: 4099178 (1978-07-01), Ranney et al.
patent: 4166698 (1979-09-01), Steele
patent: 4374329 (1983-02-01), Shoenfelder et al.

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