Patent · US Expired

Ring-shaped filter element including an annular end plate and a foamed elastic sealing ring

US6585894B1 · kind B1 · utility

11Cited by

6References

5Claims

0Family size

Assignee

Mahle Filtersysteme GmbH · DE

Inventors

Hans Gebert · Sankt Augustin, DE
Horst Schneider · Lengerich, DE
Hans Waibel · Waiblingen, DE

Key dates

Filing date	Nov 9, 2000
Grant date	Jul 1, 2003
Priority date	—
Expiry date	Nov 9, 2020

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2201/34
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A ring-shaped filter element through which material can flow radially. Web material as is provided filter material which is folded in a zigzag shape and sealingly connected at its longitudinal sides relative to a ring-shaped end plate. The end plate is formed of a first area made of a first material, and extends peripherally and not covering a radial inner and/or outer edge area. A second area forms this edge area and is designed for a seal-tight placement onto a connecting part, of a second material. The ring-shaped filter element contains a second area having a second material which is foamed simultaneously onto the web material of the first material already connected fixedly with the web material.

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