Patent · US Active

Filter medium and filter element

US8584868B2 · kind B2 · utility

2Cited by

1References

20Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Heiko Wyhler · Stuttgart, DE
Jochen Reyinger · Waiblingen, DE
Klaus Gehwolf · Mamming, DE

Key dates

Filing date	Sep 17, 2011
Grant date	Nov 19, 2013
Priority date	—
Expiry date	Sep 17, 2031

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2201/188
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter medium for removing particles from a fluid flow has a pre-filter layer and a fine-filter layer joined to each other in the flow direction. A first supporting layer is attached to the unfiltered side of the pre-filter layer and a second supporting layer is attached to the filtered side of the fine-filter layer in order to absorb the longitudinal and transverse forces in the event of tensile loading. The traverse force absorbing layer has a greater bending stiffness in a traverse direction while the longitudinal force absorbing layer has a greater bending stiffness in a longitudinal direction.

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