Swimming pool filter

Details Swimming pool filter Swimming pool filter

1997-05-29

1998-06-09

McCarthy, Neil

Liquid purification or separation

Structural installation

Closed circulating system

210287, 210288, 210289, 2104162, B01D 2913

Patent

active

057627851

ABSTRACT:
A swimming pool filter including a cylindrical receptacle made of plastic material and casket-forming ends to which a valve head is coupled, the latter to be connected by conduits to a diffusor and a manifold located, respectively, at the top and bottom of the receptacle; the filter including sand as filtering material, and a buffer is located between the bottom of the receptacle and the manifold occupying a predetermined sand-free space, which buffer when subject to an inner overpressure that causes the receptacle to expand, prevents the sand from accumulating at the bottom of the receptacle, thus neutralizing the pressures that may act upon the manifold. The cylindrical wall of the receptacle is reinforced with a band made of a resistant material.

REFERENCES:
patent: 3278034 (1966-10-01), West
patent: 3420376 (1969-01-01), Smith
patent: 3493116 (1970-02-01), Edmiston
patent: 3625365 (1971-12-01), Armstrong et al.
patent: 4105555 (1978-08-01), Pease
"Hayward S-200 High Rate Sand Filters", Hayward Pool Products, Inc. 1992.
"Hayward S-160T High Rate Sand Filters Systems", Pool Products, Inc. 1992.

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