Filter cartridges for liquid, and to filters fitted with such ca

Details Filter cartridges for liquid, and to filters fitted with such ca Filter cartridges for liquid, and to filters fitted with such ca

1993-07-23

1995-05-09

Dawson, Robert A.

Liquid purification or separation

Filter

Within flow line or flow line connected close casing

210451, 210453, 210455, 210457, 2104931, 21049701, 55498, 55500, 55502, 55521, B01D 2708, B01D 2706

Patent

active

054137128

ABSTRACT:
A filter cartridge for a liquid is designed to be removably received in a housing and comprises a tubular filter element of zig-zag folded paper having two ends that are secured to two respective flexible washers. The cartridge does not have any central reinforcement of its own and its washers co-operate directly for sealing purposes with appropriate annular bearing surfaces of a perforated rigid tube that is included in the housing: the cartridge is therefore easily discarded or degraded after use.

REFERENCES:
patent: 2726184 (1955-12-01), Cox et al.
patent: 3272336 (1966-09-01), Humbert, Jr.
patent: 5211846 (1993-05-01), Kott et al.
patent: 5250179 (1993-10-01), Spearman

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