Water filter with strainer scraping means

Details Water filter with strainer scraping means Water filter with strainer scraping means

1997-09-29

1998-09-08

Lithgow, Thomas M.

Liquid purification or separation

Filter

With residue removing means or agitation of liquid

210413, 210106, 210108, 210111, 210136, B01D 2964

Patent

active

058040722

ABSTRACT:
A water filter having a strainer mounted on the inside for straining water, and a reciprocating device controlled by a pressure differential controller to reciprocate a disk-like scraper in the strainer, causing it to scrape out dirt from the strainer, the disk-like scraper having a center water hole and a check valve mounted in the center water hole for permitting water to flow downwards in the strainer through the center water hole and stopping water from flowing upwards in the strainer through the center water hole.

REFERENCES:
patent: 5106500 (1992-04-01), Hembree
patent: 5164079 (1992-11-01), Klein
patent: 5198111 (1993-03-01), Davis
patent: 5202019 (1993-04-01), Skogland
patent: 5364539 (1994-11-01), Castagno
patent: 5527462 (1996-06-01), Davis
patent: 5569383 (1996-10-01), Vander Ark

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