Tobacco smoke detection system with tamper detection

Communications: electrical – Condition responsive indicating system – Specific condition

Reexamination Certificate

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Details

C340S506000, C340S525000, C340S693600

Reexamination Certificate

active

06940410

ABSTRACT:
A smoke detection and monitoring arrangement detects surreptitious smoking in various zones in a building, e.g., rest rooms and break rooms, and also detects tampering. Each detection unit has an intake grille leading to a duct which contains an air flow detector, a smoke detector and an optical intrusion or tampering detector. Air flow may be induced by an internal fan, or may result from an optional connection to ventilation ductwork. Air flow, smoke, and tamper signals are fed from each unit to a central control panel, which may include visible indicators and an audible alarm.

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patent: 4549168 (1985-10-01), Sieradzki
patent: 4630037 (1986-12-01), Escamilla, Jr.
patent: 4796015 (1989-01-01), Admire, Jr.
patent: 5686885 (1997-11-01), Bergman
patent: 6208252 (2001-03-01), Danilychev
patent: 6545608 (2003-04-01), Kaufman

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