| 摘要 |
<p>The sash (2) of the window is connected with the frame (1) by means of a hinge device including a set of pivot hinges (12) defining a hinge axis of the window. The hinges are mounted in such a position that the hinge axis is situated between a centre line of the window and the top or bottom of the window. The window is provided with a least one auxiliary opening device, preferably at least one pressure medium operated cylinder with an operating rod. <IMAGE></p> |
