US 4,028,750 AGranted

Cover for water-filled outdoor swimming pools

AssigneeBarracudaverken Aktiebolag

InventorErik G. Gustafsson

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Abstract

A buoyant swimming pool cover in the form of a flexible lightweight sheet comprising a large plurality of hollow buoyancy cells spaced apart over the sheet, there being a plurality of drain apertures distributed over the sheet in areas thereof not occupied by the buoyancy cells and serving to allow rain water to flow through the cover into the pool. Best results are achieved when the configuration of the upper surface of the cover presents depressions serving to direct into the drain apertures any water falling onto the cover. Advantageous embodiments are in the form of a lamination of at least two polymeric films at least one of which has been thermoformed to provide generally cup-shaped portions which are closed by another of the polymeric films. Since water cannot collect in any substantial quantity on the cover, the cover can be very lightweight and is always easily lifted off the water, without any dirt or debris which has collected on the cover being carried into the pool as the cover is removed.

Claims10

Dependent claims

A protective cover, for water-filled outdoor swimming pools, comprising

a flexible sheet of size and shape to cover the surface of the water in the pool, said sheet comprising
at least two thin, flexible polymeric films,
a first one of said films having a plurality of laterally spaced pockets which depend from the film when the sheet is in place on the water in the swimming pool,
another of said films overlying said first film so as to extend across said pockets and the portions of said first film which are not occupied by said pockets,
said other film being secured to said portions of said first film to unite said first film and said other film and to seal against entry of water into said pockets,
said pockets, thus sealed, constituting hollow buoyancy cells spaced apart and distributed over the sheet to provide the sheet with an overall positive buoyancy adequate for support of the sheet on the surface of the swimming pool water with the portions of said first film which are not occupied by said pockets then being supported at a level spaced slightly above the surface to the swimming pool water,
there being a plurality of drain apertures spaced apart and distributed over the sheet in areas thereof not occupied by said buoyancy cells, for passage of rain water downwardly through the sheet.

4 more elements

A protective cover, for water-filled outdoor swimming pools, comprising

a flexible sheet of size and shape to cover the surface of the water in the pool,
said sheet having a plurality of hollow buoyancy cells spaced apart and distributed over the sheet to provide the sheet with an overall positive buoyancy adequate for support of the sheet on the surface of the swimming pool water,
said buoyancy cells having a substantial thickness and projecting from that side of the sheet which will be down when the cover is in place, the other side of said sheet being formed with depressions and carrying a plurality of elongated reenforcing elements which are arranged to form ridges which define the edges of said depressions,
there being a plurality of drain apertures spaced apert and distributed over the sheet, with at least one of said apertures being located within each of said depressions, whereby water falling on the sheet is directed into said apertures and will pass downwardly through the sheet.

1 more element

Dependencies are inferred from the claim text.