| 摘要 |
<p>The device for limiting the opening movement of a door, is in the form of a flexible chain with one end piece detachably coupled to a lock on the frame inside and the other linked to a holder on the door wing. The lock (2) is mounted on a base piece with fixing devices, to turn about an axis which is vertical in the lock's operative position. The keyhole (14) is sited in the lock sheat. There can be a flat-profiled bolt, rotatably mounted on a spring-loaded plunger which is only axially movable in the lock.</p> |
