Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2005-09-06
2005-09-06
Mullen, Thomas (Department: 2632)
Communications: electrical
Condition responsive indicating system
Specific condition
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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Molldrem, Jr. Bernhard P.
Mullen Thomas
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