| 摘要 |
Pivot window which, at two opposing corners of the sash, preferably the two upper corners, is slidably connected to the frame by means of a groove/pivot means; a mounting on both sides of the window supporting the window sash during pivotal movement thereof beyond the frame. The mountings are arranged at the center of the frame portions which are provided with grooves, and the mountings are constituted by extendible arms which are rigidly connected to the frame and articulated to the sash. The extendible arms are effected on the lazy-tong principle. |
