Patent · US Active

Filtering device, in particular diesel particulate filter

US8992652B2 · kind B2 · utility

0Cited by

7References

10Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Arndt-Udo Rolle · Siegburg, DE
Frank Ehlen · Neunkirchen, DE
Kathrin Lichtenwalter · Nuremberg, DE
Jochen Linhart · Waiblingen, DE
Nadine Dietsch · Ilsfeld, DE

Key dates

Filing date	Dec 17, 2012
Grant date	Mar 31, 2015
Priority date	—
Expiry date	Feb 4, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filtering device features a ceramic filter body for filtering a fluid flow, the filter body consisting of a wavy layer and a flat layer and the wavy and flat layer being wound in a spiral-shaped manner. The wave length of the waves increases from the inside to the outside with increasing distance to the longitudinal axis of the filter body such that the wave troughs and the wave peaks of at least two radially adjacent windings each lie on a common radial plane.

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