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热词
    • 3. 发明授权
    • Electronically alarmed lock
    • 电子警报锁
    • US4303909A
    • 1981-12-01
    • US85922
    • 1979-10-18
    • Franklin J. Martin
    • Franklin J. Martin
    • E05B45/10E05B45/14E05B49/00G08B13/00G08B13/08
    • G08B13/08E05B49/004G08B13/00
    • A standard mechanical lock is provided with an electrical coding system for setting off an alarm in the event that an incorrect key is used or the lock is tampered with. The electrical coding system includes a binary code inscribed in the back edge of the key. A plurality of conductive fingers are mounted on the lock body to contact the back of the key when the key is rotated in the lock. A decoding circuit is provided which sounds an alarm in the event that an incorrect code is presented to the fingers. In the event that an attempt is made to pick the lock, one or more of the fingers will become grounded thus setting off the alarm. Automotive and building applications are disclosed wherein microswitch sensors are placed at strategic locations to set off the alarm in the event that an attempt is made to circumvent the mechanical lock.
    • 标准机械锁具有电气编码系统,用于在使用不正确的键或锁被篡改的情况下设置报警。 电气编码系统包括内嵌在键的后边缘中的二进制代码。 当钥匙在锁中旋转时,多个导电指状物安装在锁体上以接触钥匙的后部。 提供一种解码电路,在向手指呈现不正确的代码的情况下会发出警报。 在尝试选择锁定的情况下,一个或多个手指将变为接地,从而设置报警。 公开了汽车和建筑应用,其中微型开关传感器被放置在战略位置以在企图规避机械锁的情况下将警报放下。