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:
Dec. 08, 2015
Filed:
Aug. 19, 2013
Mann+hummel Gmbh, Ludwigsburg, DE;
Joerg Menssen, Tamm, DE;
Stefan Becker, Mannheim, DE;
Kai Hilarius, Roemerberg, DE;
Klaus-Dieter Ruhland, Meckenheim, DE;
Mann + Hummel GmbH, Ludwigsburg, DE;
Abstract
A filter element () for an air filter () has a tubular filter medium (), the annular cross-section of which encloses an interior () of the filter element and which has an inner wall () that adjoins the interior of the filter element and that extends in the form of at least one convex arch () and at least two concave arches (), the concave arch () being located between two convex arches () such that the interior () of the filter element has a constriction () in the area of the concave arch (), the constriction () being adjoined by two wide zones () of the interior of the filter element.