Non-drip and full prime filter

Liquid purification or separation – With drip – overflow or content draining feature

Patent

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Details

210349, 2104164, 2104165, 210418, 210430, 210440, 2104971, B01D 2710, B01D 35153

Patent

active

050303457

ABSTRACT:
A filter for liquids is disclosed, which has a base with a central inlet, and an outlet, a central post with a filtering element surrounding and sealing therewith, a cannister enclosing the element and releasably sealed to the base, a passageway in the post, which is sealed to the inlet, and which has means to permit upward flow but inhibit downward flow or drip. This retains the liquid in the cannister and element when drawn upwardly, to prevent drip or spillage, or when lowered to provide a full prime. A method of removing the filtering element without drip, and a method of installing a primed element are also disclosed.

REFERENCES:
patent: 2094457 (1937-09-01), Lattner
patent: 2978107 (1961-04-01), Gutkowski et al.
patent: 3071251 (1963-01-01), Szwargulski
patent: 3507391 (1970-04-01), Rosaen
patent: 4077876 (1978-03-01), Southall
patent: 4222875 (1980-09-01), Sikula, Jr.
patent: 4256576 (1981-03-01), Rose et al.
patent: 4529514 (1985-07-01), Gruett
patent: 4818397 (1989-04-01), Joy

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