| 摘要 |
<p>PCT No. PCT/GB88/00810 Sec. 371 Date May 12, 1989 Sec. 102(e) Date May 12, 1989 PCT Filed Sep. 30, 1988 PCT Pub. No. WO89/02967 PCT Pub. Date Apr. 6, 1989.A lock assembly (10) for mounting on a door includes a dead-locking element (31), movement of which is controlled by an electrically operated device (35) for mounting on the door frame and magnetically coupled to a linkage system (32,33) whereby the dead-locking element (31) is moved. The linkage system carries a permanent magnet (34) which interacts with the core (37) of the solenoid when the door is in its closed position, and when the solenoid is energised it repels the permanent magnet (34) thereby operating the linkage system to move the dead-locking element (31) away from its operative position, thereby allowing a locking member (12) to be withdrawn.</p> |
