| 摘要 |
<p>Door latches and door locks electrically remotely controllable from a locking or latching condition to an unlocked state have two solenoids in them. Actuation of one solenoid releases locking or latching and actuation of the other applies locking or latching. By the use of two solenoids, each for the specific task, only a brief signal has to be sent to the lock or latch unit rather than supplying continuous power to hold a lock or latch openable in known fashion. The invention may be applied to electrically controllable latch plates for controlling remote entry units or e.g. incorporated in mortice locks used for doors in hotel or office buildings.</p> |
