Rechargeable filter assembly

Details Rechargeable filter assembly Rechargeable filter assembly

1989-08-16

1991-05-14

Dawson, Robert A.

Liquid purification or separation

With repair or assembling means

210450, 210457, 210484, 2104935, 55500, 55502, 55521, B01D 2708, B01D 2921

Patent

active

050153757

ABSTRACT:
A rechargeable filter assembly for removal of contaminants from liquids of all types, particularly dry cleaning solvents comprising three nested and spaced apart concentric perforated metal cylinders defining an inner cavity and an outer cavity held in spatial relationship by a base plate and removable lid. With the lid and outer perforated cylinder (exterior shell) removed, a removable and disposable filter unit may be placed within the outer cavity and similar, or different, filter medium may be placed within the inner cavity. The gaskets of the filter unit in conjunction with the lid, the base, the conduit, exterior shell and the inner perforated cylinder provide seals which prevent liquids from bypassing the filter unit.

REFERENCES:
patent: 2559133 (1951-07-01), Schultz
patent: 2731155 (1956-01-01), James
patent: 3187896 (1965-06-01), Wilkinson
patent: 3189179 (1965-06-01), McMichael
patent: 4303426 (1981-12-01), Battis

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