Plastic extruded center tube profile and method of manufacture
US7108139B2 · kind B2 · utility
13Cited by
12References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 2003 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Jan 1, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/0415
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.