combination lock with latch and train pressure lock, both with integrated double schliessmerkmalen,lock with additional security features and keypad for lock with features for detection of and reaction to unauthorized manipulation

摘要

A dead bolt lock automatically blocks the extended bolt to prevent externally-applied force from thrusting the bolt back into the lock case, and in the event of physical attack the lock responds by prolonging or perpetuating the dead bolt blocking condition. A push-pull lock has a bolt whose motion in both directions is stopped in response to detection of a rise in motor current above a certain level: a cushioning arrangement allows the current-limiting feature to be implemented without risk of damage to the motor, gear teeth or other drive components. A re-locker arrangement includes an angled flange that is part of a motor-supporting bracket; when forcibly pressed, the flange breaks plastic pins to release a spring-biased re-locker wire to block the bolt from being withdrawn, and when the wire is in the dead bolting position an extension of the re-locker wire engages a ridge in the lock's case to prevent the re-locker from being manipulated back to its original position. Either lock can control the position of a bolt works blocking element that selectively engages a lever-driven mechanism that blocks and unblocks the door from being opened. A sensor switch, especially for use on the push-pull lock, tells the lock when the mechanism is in a secured position, so that the lock is automatically re-locked and the user does not have to manually extend the bolt. Finally, the system has a keypad tampering detection and response system, remote enable/disable unit, duress detection and response unit, low-battery sensing arrangement, bolt extension indication feature, adjustable bolt throw feature, and audit trail feature.