Patent · US Active

Support tube for a filter element

US9168477B2 · kind B2 · utility

12Cited by

1References

15Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Franziska Schulz · Schifferstadt, DE
Bernd Burkhart · Mutterstadt, DE

Key dates

Filing date	Nov 21, 2013
Grant date	Oct 27, 2015
Priority date	—
Expiry date	Nov 21, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2265/06
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter element has a support grid structure with a first axial end and a second axial end. A filter medium surrounds annularly the support grid. The support grid has structural web members that are connected and form a hollow-cylindrical grid structure that surrounds a cylindrical interior. At least three of the structural web members or structural web sections connect to each other to define a through opening. A fluid flow is enabled in radial direction relative to a center axis of the hollow-cylindrical grid structure through the through openings. A first average opening cross-section of the through openings in a first region adjacent to a first axial end is greater than a second average opening cross-section of the through openings in a second region adjacent to the second axial end.

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