Movable or removable closures – Closure condition signal or indicator
Patent
1990-02-15
1991-04-16
Kannan, Philip C.
Movable or removable closures
Closure condition signal or indicator
340547, G08B 1308
Patent
active
050071998
ABSTRACT:
An anti-intrusion window is disclosed having a sash assembly which is movable along two paths; one for ventilating and one for cleaning the sash. A sensor is supported by one of the window frame or the sash assembly and a position indicator such as a magnet is supported by the other. The sensor detects the momentary presence of the position indicator to trigger an alarm. The sash assembly is movable through a range of ventilating positions without triggering the alarm while the alarm is armed. The sash may be moved into a cleaning position without triggering the alarm while the alarm is armed.
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Bernath Stanley
Dunagan John E.
Kannan Philip C.
Larmco Security, Inc.
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