发明名称 |
DEAD BOLT COMBINATION LOCK AND PUSH-PULL LOCK, EACH WITH INTEGRATED RE-LOCKING FEATURES, LOCK WITH AUXILIARY SECURITY FEATURES, AND LOCK KEYPAD WITH TAMPER DETECTION AND RESPONSE FEATURES |
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forcibly pressed, the flange breaks plastic pins to release a spring-biased re-locker wire to block the bolt from being withdrawn, and when the wire is in the dead bolting position an extension of the re-locker wire engages a ridge in the lock's case to prevent the re-locker from being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. |
申请公布号 |
EP1049843(A1) |
申请公布日期 |
2000.11.08 |
申请号 |
EP19980963833 |
申请日期 |
1998.12.21 |
申请人 |
SARGENT & GREENLEAF,INC. |
发明人 |
CLARK, MICHAEL, R.;LAINHART, GREG;URSCHEL, NED;HORNE, MARSHALL;CUENOT, CEDRIC;DEXET, CHRISTOPHE;WICHT, JACQUES |
分类号 |
E05B17/20;E05B17/22;E05B41/00;E05B47/00;E05B49/00;E05B63/06;G07C9/00 |
主分类号 |
E05B17/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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