The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 2011
Filed:
Feb. 20, 2008
Applicants:
Gunther Kraft, Ludwigsburg, DE;
Andre Rösgen, Remshalden, DE;
Peter Müller, Saarbrücken, DE;
Inventors:
Assignee:
Mann+Hummel GmbH, Ludwigburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 35/30 (2006.01); B01D 35/34 (2006.01); B01D 27/00 (2006.01); B01D 29/00 (2006.01);
U.S. Cl.
CPC ...
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.