Lock control system with lock-down feature
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United States of America Patent
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-
Mar 10, 2009
Grant Date -
Aug 18, 2005
app pub date -
Feb 17, 2005
filing date -
Feb 17, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A control system is for a lock of a door movably disposed within a frame and having a latch engageable with the frame, an interior handle connected with the latch and an exterior handle connectable with the latch. A connective mechanism is configured to releasably connect the exterior handle with the latch and an input device is configured to generate an unlock signal. A controller is coupled with the input device and configured to operate the connective mechanism such that the mechanism connects the exterior handle with the latch. The controller is selectively operable in a standard mode where the controller operates the mechanism when the controller receives the unlock signal and a lockdown mode where the controller does not operate the mechanism when receiving the unlock signal. A lockdown-input device coupled with the controller is configured to generate a lockdown signal to switch the controller to the lockdown mode.
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