Oil filter

Details Oil filter Oil filter

2007-11-27

2007-11-27

Drodge, Joseph (Department: 1723)

Liquid purification or separation

Filter

Within flow line or flow line connected close casing

C184S006240, C210S136000, C210S232000, C210S450000

Reexamination Certificate

active

11678898

ABSTRACT:
An oil filter is provided which comprises a housing main body, a cover attached to the housing main body on the lower side thereof, an inner tubular member axially movably disposed in a recessed portion of the housing main body, a seal member interposed between the inner tubular member and the cover so as to provide a seal therebetween, a biasing unit for urging the inner tubular member in the direction to protrude from the recessed portion, and a filter element disposed in an oil flowing space between the housing main body and the cover, wherein when the cover is in a sate of being attached to the housing main body, the inner tubular member is pushed down into the recessed portion of the cover against a bias of the biasing unit.

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patent: 22 57 077 (1973-05-01), None
patent: 944639 (1963-12-01), None
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Shoji Morita, U.S.P.T.O. Notice of Allowance, U.S. Appl. No. 10/618,584, Feb. 20, 2007, 8 pages.

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