| 摘要 |
<p>The device has a protective cover including an apron provided with rigid and hollow floating slats that are articulated with respect to one another. Each slat has a free end provided with an elastic return unit that supports flat retractable vanes (100) against corresponding vertical walls of a basin of a swimming pool. Each vane has strips (111, 112) that stress the fin, while displacing the fin for being retracted in an adaptation chamber (200) against the action of the elastic return unit.</p> |
