| 摘要 |
<p>PCT No. PCT/DK94/00461 Sec. 371 Date May 31, 1996 Sec. 102(e) Date May 31, 1996 PCT Filed Dec. 9, 1994 PCT Pub. No. WO95/16097 PCT Pub. Date Jun. 15, 1995A window, particularly for installation in an inclined roof surface, comprising a main frame and a frame hinged to the top thereof as well as a frame lifting arm inserted between the main frame and the frame, the arm having one end pivotally connected with a lateral member of the main frame or the frame and its other end pivotally connected with a slide shoe which in a longitudinally displaceable manner is connected with the corresponding lateral member of the main frame or the frame, respectively. The slide shoe is associated with a pre-stressed lifting spring, as a first coupling first coupling member on the slide shoe is adapted to engage with a second coupling member connected with the lifting spring when installing the window. Between the slide shoe and the lifting spring is an auxiliary spring, the pre-stressing of which can be adjusted in dependence on the roof inclination, by a manually operated adjusting element, for supplementing the spring force from the lifting spring within a given range of the opening angle of the window. The auxiliary spring can be accommodated in a spring box between an abutment which is stationary with respect to the spring box and an abutment which is movable along the spring box.</p> |
