Plastic molded center tube assembly

Details Plastic molded center tube assembly Plastic molded center tube assembly

2007-01-30

2007-01-30

Savage, Matthew O. (Department: 1724)

Liquid purification or separation

Filter

With central pervious tubular receiver

C428S036900

Reexamination Certificate

active

11217558

ABSTRACT:
A filter for a fluid system includes a housing having an interior cavity. A filter media is disposed in the housing and defines a central opening. A center tube assembly is arranged within the central opening and includes discs which are stackable upon one another. Each disc includes a central portion having base received by an inner wall of the central portion of the adjacent disc. An outer portion extends radially outwardly from the central portion and is positioned adjacent to the filter media. The central portion, base, and outer portion may include openings to permit the flow of fluid through the center tube assembly. The center tube assembly provides the desired structural integrity while permitting fluid to flow through the center tube. The present invention center tube assembly may be produced by a plastic molding process.

REFERENCES:
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patent: 5601711 (1997-02-01), Sklar et al.
patent: 5601717 (1997-02-01), Villette et al.
patent: 5906737 (1999-05-01), Hoeppner
patent: 6511101 (2003-01-01), Sommer et al.
patent: 6615990 (2003-09-01), Jokschas et al.
patent: 6783833 (2004-08-01), Bordner et al.
patent: 1 902 534 (1964-10-01), None
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patent: 1 441 269 (1976-06-01), None
European Search Report, Sep. 8, 2004, Application No. EP04253067.

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