| 摘要 |
A mortice lock is disclosed for recessed installation into the edge of a door or door frame. Various inventive features include> (a) a dead-latching member mounted on the bolt assembly, for pivoting movement, (b) the drive shaft (& hub) can be rotated in either a clockwise or anticlockwise direction to cause bolt retraction, (c) the drive shaft (& hub) can be locked against rotation or not, by a locking means mechanically connected to the cylinder cam rotated by a key, (d) the drive shaft (& hub) can be locked against rotation or not, by a locking means mechanically connected to an assembly comprising, the bolt assembly interacting with a separately activated kick off member, such that on retraction of the bolt, depending on the position of the kick off member, the hub is locked against rotation, (e) the bolt can be retracted by each of the key cylinder cam and the hub, in isolation.
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