| 摘要 |
The present invention is a lock system particularly suited to the requirements of restricting access to an aircraft cockpit, although the invention may be equally applied to a range of other applications. Disclosed is a lock system including a door mounted locking bolt () that may be actuated by a handle (32) on the cockpit side of the door and by a key (34) on the cabin side of the door. The key actuator may be disabled from the cockpit side of the door. The bolt (48) is configured to engage a doorframe mounted bolt-receiver (40); the bolt and the bolt-receiver thereby interlocking in a way that holds the bolt in the bolt-receiver in the advent of attempted forced entry to the cockpit, such as by a terrorist. The doorframe elements are further configured so as to automatically release the bolt and allow the door to open freely in the case of a sudden differential in cockpit and cabin air pressure. The automatic release may also be activated by a manual switch or system override (30). |
