| 摘要 |
<p>The device has a support structure with two crossbars (14, 15) maintaining two sets of pulleys (6a, 6b, 7a, 7b), respectively. A covering part has flexible covering units (1) mounted on the structure by two suspension units (3a, 3b). The units (1) have an elastically deformable concave profile for modifying their width in order to be displaced between open and closed positions, to adjust a covering surface.</p> |
