Tapered, spirally wound filter cartridge and method of making sa

Details Tapered, spirally wound filter cartridge and method of making sa Tapered, spirally wound filter cartridge and method of making sa

1987-04-06

1989-06-13

Fisher, Richard V.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

210232, 21032183, 210457, 2104971, 55520, 55DIG5, 156187, 156192, 156193, 156258, 156291, 1563042, 1563045, B01D 2704, B01D 2906

Patent

active

048390372

ABSTRACT:
A spirally wound filter cartridge and a method of making the same in which the cartridge includes an elongated, centrally disposed tube or mandrel, and a sheet of filtration material spirally wound around the tube such that the cartridge has a tapered configuration with a first end of the cartridge being greater in diameter than the second end. The present invention also relates to a filtration device having a filter cartridge housing adapted to receive the above mentioned tapered filter cartridge.

REFERENCES:
patent: Re20494 (1937-09-01), Burhans
patent: 1669461 (1928-05-01), Gamble
patent: 2726185 (1955-12-01), Howald
patent: 2995254 (1961-08-01), Bennett
patent: 3050193 (1962-08-01), Gillick, Jr. et al.
patent: 3063888 (1962-11-01), Howard et al.
patent: 3317045 (1967-05-01), Dummler
patent: 4187136 (1980-02-01), Nostrand
patent: 4548714 (1985-10-01), Kirwan, Jr. et al.
patent: 4609466 (1986-09-01), McCausland

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