| 摘要 |
<p>An easily removed or installed cover for swimming pools or the like is provided. It consists in one form of a cover sheet of flexible sheet material capable of assuming an arched configuration over the pool having a periphery in the general shape of the pool. An inflatable air tube in the approximate shape of the perimeter of the pool is dependently attached by an intermediate supporting wall to the underside of the cover sheet perimeter. The exhaust of a low pressure continuously operating blower is connected to the air tube by a flexible link of buoyant tubing. The tubing extends beneath the cover sheet from one side of the cover to exhaust air into the air tube on the opposite perimeter. A second low pressure continuously operated air blower is connected by a second tube to the cover sheet to exhaust air underneath the cover. An apron attached to the perimeter of the cover sheet and forming an extension of the cover sheet extends over the edge of the pool and includes provisions for securement of the apron and thus the cover to the pool. In another embodiment the tube connecting the air tube to its associated blower enters the air tube on one side of the pool and runs within the air tube around the perimeter of the pool to the opposite side where it exhausts into the air tube. In another embodiment the tube connecting the air tube to its associated blower enters the air tube on one side of the pool and runs within the air tube around the perimeter of the pool to the opposite side where it exhausts into the air tube. In another embodiment, a single blower supplies the air feeder tubing to the air tube and beneath the cover. A multi-chamber valve having a pair of differently sized apertures and associated doors connected to a pivot arm controls and directs the initial air flow to the air tube and subsequently to beneath the cover. In a further embodiment for pools having a separate portion, such as a whirlpool, an auxiliary cover for this separate portion is provided. The auxiliary cover consists of a cover sheet for over the separate portion of the pool and a second sheet beneath it which form an air bag connected to the main cover, which is in a form as described above, by a tube.</p> |
