| 摘要 |
<p>The lock consists of a housing (1) fitted within the thickness of the door or window, containing a nut (3) turned by a drive bar (4) to operate a latch (5), long bolts (6, 7) and/or a fixed bolt (8). The nut is able to turn freely inside the housing and has an outer crown (9) with a slot (10) for a pin (11) on a sliding return pusher (12) moved parallel to the back edge of the housing by springs (14).</p> |
