| 摘要 |
<p>A description is given of a device for controlling the movement of a handle (30) for door and window frames, which handle is mounted to rotate together with a prismatic pin (27) coupled to a bolt (29). A prismatic element (18) has a central seat (19) suitable for receiving the pin (27) in order to rotate together therewith, and a plurality of flat outer thrust surfaces (20) suitable for cooperating with a pair of sliders (22) urged resiliently in order to bring about a corresponding plurality of stable configurations in each of which the bolt (29) is in a locking position, and the handle (30) is in one of a plurality of corresponding angularly spaced stable release positions. <IMAGE></p> |
