| 摘要 |
- Device for controlling the opening and closing of at least one leaf mounted on a frame in a manner articulated on an axis, characterised in that it comprises - a generally L-shaped arm, of which the free end of the small branch is mounted in a manner articulated on an axis parallel to the axis of rotaton of the said leaf, the large branch of the L having an adjustable length; - means for driving the said L in rotation between a first leaf-opening position, in which the said large branch has a maximum length and is near to and substantially parallel to the plane of the leaf, and a second shutter-closing position, in which the large branch of the said L is of minimum length. <IMAGE> |
