| 摘要 |
The invention relates to a device (1) for covering a surface (3) of which the contour defines a surface plane, said device comprising: (a) a substantially rectangular cover (10) wound onto (b) a drum (2) which is rotatably mounted on a carriage that can wind up or unwind the cover (10) by movement of the carriage in a longitudinal direction of the surface and thus allows the deployment of the cover or the removal thereof from the surface (3); and (c) a protective casing (20) mounted on said carriage, characterised in that the distance between the edge of the casing and the edge of the surface varies between a first stopping position dp, and a second movement position dm when the carriage moves the drum over the surface (3), and in that dm>dp. |
