Two stage filter

Details Two stage filter Two stage filter

1984-06-13

1985-12-10

Fisher, Richard V.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Fluid pressure responsive by-pass

210137, 210315, 210443, 210509, B01D 2710

Patent

active

045578290

ABSTRACT:
A multistage filter unit comprises a housing having a closed end and an other end closed except for liquid inlet means and liquid outlet means. Within the housing are first and second filter elements. The improvement is characterized by the second filter element being comprised of a porous disc retained in or adjacent the opening of the first filter element by a foraminous element. The porous disc is deformable in response to increase in differential pressure due to clogging of the porous disc to reduce the liquid flow path through the porous disc and relieve some of the differential pressure, without opening an unfiltered path for liquid.

REFERENCES:
patent: 2098725 (1937-11-01), Hurn
patent: 2833416 (1958-05-01), Wilkinson
patent: 3344923 (1967-10-01), Pall et al.
patent: 3450632 (1969-06-01), Olson et al.
patent: 3467256 (1969-09-01), Humbert, Jr. et al.
patent: 3487929 (1970-01-01), Sample et al.
patent: 3493110 (1970-02-01), Rosaen
patent: 3586171 (1971-06-01), Offer
patent: 3975273 (1976-08-01), Shaltz et al.
patent: 4038189 (1977-07-01), Dison et al.
patent: 4048071 (1977-09-01), Yamada et al.
patent: 4240908 (1980-12-01), Swain et al.

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