Plastic extruded center tube profile and method of manufacture

Details Plastic extruded center tube profile and method of manufacture Plastic extruded center tube profile and method of manufacture

2006-09-19

2006-09-19

Drodge, Joseph (Department: 1723)

Liquid purification or separation

Filter

Within flow line or flow line connected close casing

C055S498000, C055S521000, C210S457000, C210S483000, C210S493100

Reexamination Certificate

active

07108139

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 is arranged within the central opening and includes a plurality of helical fins extending radially outwardly from a central portion of the center tube. The helical fins terminate in an outer portion that is adjacent to the filter media. The center tube provides the desired structural integrity while permitting fluid to flow through the center tube. The present invention center tube is produced by a plastic extrusion process.

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German Office Action dated Jun. 6, 2006 (Four (4) pages).

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