Swimming pool

Claim 2

An in-ground swimming pool including a pair of rigid substantially planar end members; an inner and an outer arcuate flange projecting from each said end member and defining a channel between them having the shape of the bottom and sides of the pool; a sheet of flexible springy material capable of transportation in rolled form, each lateral edge of said sheet being engaged in one said channel, said edge having a clearance from said end member, thereby to form the sides and bottom of the pool; and a resilient sealing gasket inserted in highly compressed condition between each lateral edge of said sheet and the adjacent inner flange, said gasket being the sole sealing means between said edge and the channel.

Claim 3

A swimming pool as claimed in claim 1, in which each said outer flange is wider than said inner flange and projects beyond it.

Claim 4

A swimming pool as claimed in claim 1, including at least one aperture in each said outer flange communicating with said channel between said gasket and said end member.

Claim 5

A swimming pool as claimed in claim 1, including a spacer between said sheet and said inner flange at a curved portion of said channel, said spacer being of material less compressible than that of said gasket and being of less radial width than said highly-compressed gasket.

Claim 6

A swimming pool as claimed in claim 1, in which said sheet is formed of a plurality of longitudinally-extending sections; contiguous flanges on adjacent edges of said sections; a longitudinal fastener having a body, a longitudinal bore in said body and a longitudinal slot through said body leading to said bore, said contiguous flanges being engaged in said slot.

Claim 7

A swimming pool as claimed in claim 5, including slots in each said outer flange through which slot said fastener projects.

Claim 8

An in-ground swimming pool comprising: a. a pair of substantially planar end members spaced so as to define the length of said pool, each of said ends including inner and outer spaced parallel flanges defining a channel between them having a predetermined shape of the bottom and side walls of said pool, b. a sheet of flexible springy material capable of being transported in roll form, the lateral edges of said sheet being engaged in said channels when said sheet is rolled out thereby to form the sides and bottom of said pool, clearances being provided between the edges of said sheet and said end members thereby permitting lateral movement of said sheet relative to said end members in response to hydrostatic pressure on said sheet, temperature changes or earth movements and c. a resilient sealing gasket inserted in highly compressed condition between each lateral edge of said sheet and the corresponding inner flange, said gasket being the sole sealing means between said edge and said channel.

Claim 9

An in-ground swimming pool comprising: a. a pair of substantially planar end members spaced so as to define the length of said pool, each of said ends including inner and outer spaced parallel flanges defining a channel between them having a predetermined shape of the bottom and side walls of said pool, b. a sheet of flexible springy material capable of being transported in roll form, the lateral edges of said sheet being engaged in said channels when said sheet is rolled out thereby to form the sides and bottom of said pool, clearances being provided between the edges of said sheet and said end members thereby permitting lateral movement of said sheet relative to said end members in response to hydrostatic pressure on said sheet, temperature changes or earth movements and c. a resilient sealing gasket inserted in highly compressed condition between each lateral edge of said sheet and the corresponding inner flange, said gasket being the sole sealing means between said edge and said channel.