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:
Mar. 17, 2015
Filed:
Feb. 26, 2009
Applicants:
Karlheinz Muenkel, Oberderdingen-Flehingen, DE;
Markus Kolczyk, Mundelsheim, DE;
Stefan Becker, Mannheim, DE;
Michael Heim, Freiberg, DE;
Inventors:
Karlheinz Muenkel, Oberderdingen-Flehingen, DE;
Markus Kolczyk, Mundelsheim, DE;
Stefan Becker, Mannheim, DE;
Michael Heim, Freiberg, DE;
Assignee:
Mann+Hummel GmbH, Ludwigsburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 46/00 (2006.01); B01D 46/52 (2006.01); B01D 46/24 (2006.01); F02M 35/024 (2006.01);
U.S. Cl.
CPC ...
B01D 46/528 (2013.01); B01D 46/0021 (2013.01); B01D 46/2411 (2013.01); B01D 46/522 (2013.01); F02M 35/024 (2013.01);
Abstract
Filter element or air filter in the configuration of a multiple bellows filter with an increased efficiency for use in internal combustion engines, wherein a folded filter bellows is arranged radially inwardly of another folded filter bellows and the inner folded filter bellows has a greater or deeper fold depth than the outer folded filter bellows.