| 摘要 |
<p>The invention provides a chain drive for open-out bottom-hinged or top-hinged sashes, having an elongate, box-shaped housing (5) which is fastened on the frame (1) and exhibits a chain guide (32), having an overall length which is at least equal to three times the length of the housing, and the necessary motor drive (22-25, 29) for the opening-out chain (30), accommodated in the chain guide. <IMAGE></p> |
