Device for filtering a liquid, particularly water

Details Device for filtering a liquid, particularly water Device for filtering a liquid, particularly water

1995-01-10

1997-07-01

Cintins, Ivars

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Check valve

210266, 210282, 2104163, B01D 2416

Patent

active

056434448

ABSTRACT:
Apparatus for filtering liquids, the apparatus including: a reservoir for the liquid to be purified; a pump operatively associated with the reservoir; a filter having a lower portion and an upper portion and coupled to the pump so that liquid supplied by the pump circulates through the filter from the lower portion to the upper portion; a dispensing member coupled to the filter for dispensing purified liquid; and a one-way valve connected upstream of the filter, with respect to the direction of liquid flow in the apparatus, and operable to maintain the filter in permanent contact with liquid to be purified when the pump is not in operation.

REFERENCES:
patent: 3420709 (1969-01-01), Barrett et al.
patent: 3950253 (1976-04-01), Stern
patent: 4717476 (1988-01-01), Scott
patent: 4741828 (1988-05-01), Alhauser et al.
patent: 5066393 (1991-11-01), Padera et al.
patent: 5092990 (1992-03-01), Muramatsu et al.
patent: 5290442 (1994-03-01), Clack
patent: 5362385 (1994-11-01), Klegerman et al.
Water Treatment Handbook, Degremont, 1991, vol. 1, p. 156.

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