Smoke warning system

Communications: electrical – Condition responsive indicating system – Specific condition

Reexamination Certificate

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Details

C340S521000, C340S522000, C340S286050, C340S945000

Reexamination Certificate

active

07746238

ABSTRACT:
In a smoke warning system ambient conditions are included in the evaluation of the smoke warning transmitter statuses, or the internal signal evaluation in the smoke warning transmitter is influenced. In this procedure the alarm threshold of the system is raised under certain ambient conditions so that the smoke warning transmitter per se is set so as to be less sensitive.

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International Search Report PCT/EP2005/007876 dated Oct. 13, 2005 (European Patent Office NL).
Li Dingguo et al,. “Design of a Low-Price Smoke and Temperature Alarm Detector”, Coalmine Design, vol. 10, Dec. 12, 1996, pp. 30-31, with English language translation, 6 pages.
Russian Office Action, dated Jun. 19, 2009, issued in corresponding Russian Patent Application No. 2006146347/09 (050619), total 4 pages; English Translation attached, 6 pages.

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