Patent · US Expired

Unitary centertube for a fluid filter

US6840386B2 · kind B2 · utility

7Cited by

15References

8Claims

0Family size

Assignee

Fleetguard, Inc. · US

Inventors

Thomas H. Steger, Jr. · Cookeville, US
Jeffrey B. Sharp · Cookeville, US
Paul D. Miller · Winston-Salem, US

Key dates

Filing date	Mar 11, 2002
Grant date	Jan 11, 2005
Priority date	—
Expiry date	May 10, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2201/0415
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A unitary centertube, molded out of a synthetic material and designed for use as part of a fluid filter, includes a tubular body portion arranged with a plurality of annular ribs in alternating sequence with a plurality of annular recessed sections, the tubular body portion defining a plurality of fluid flow apertures and an interior opening. The plurality of fluid flow apertures are arranged in two styles to facilitate the mold design. Included as part of the unitary centertube is a cross-beam section positioned in the interior opening for providing reinforcement to a corresponding filtering element when subjected to a differential pressure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.