Patent · US Active

Filter apparatus for filtering the air for an internal combustion engine

US7632328B2 · kind B2 · utility

0Cited by

17References

15Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Stefan Walz · Freiberg, DE
Pius Trautmann · Dingolfing, DE
Andreas Pelz · Markgröningen, DE
Jobst Eisengraeber-Pabst · Oberstenfeld, DE

Key dates

Filing date	Dec 14, 2006
Grant date	Dec 15, 2009
Priority date	—
Expiry date	Nov 9, 2027

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2279/60
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter device for filtering air in internal combustion engines equipped with a filter that can be inserted into a filter housing and has a flame-retardant effect. The filter comprises a main filter element and an upstream filter fleece whereby the flame-retardant effect is achieved by the fleece prefilter.

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