Patent · US Active

Filter, in particular a fuel filter

US7997422B2 · kind B2 · utility

0Cited by

6References

14Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Gunther Kraft · Ludwigsburg, DE
André Rösgen · Winnenden, DE
Peter Muller · Prien am Chiemsee, DE

Key dates

Filing date	Feb 20, 2008
Grant date	Aug 16, 2011
Priority date	—
Expiry date	Aug 21, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2201/4084
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter has a housing with cylindrical wall having a first end face and a second end face. The housing has an end wall that closes of the first end face. A filter insert is arranged in the housing. A lid is attached to the cylindrical wall and closes off the second end face. The housing has two layers of different plastic materials, wherein the different plastic materials have different ductility and in particular different hardness. The cylindrical wall has elements that provide a positive-locking connection of the two layers in the axial direction of the housing.

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