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:
Oct. 16, 2012
Filed:
Mar. 25, 2012
Eric Gillenberg, Speyer, DE;
Friedrich Kupfer, Poxau, DE;
Klaus-dieter Ruhland, Meckenheim, DE;
Oliver Steins, Römerberg, DE;
Eric Gillenberg, Speyer, DE;
Friedrich Kupfer, Poxau, DE;
Klaus-Dieter Ruhland, Meckenheim, DE;
Oliver Steins, Römerberg, DE;
Mann + Hummel GmbH, Ludwigsburg, DE;
Abstract
A filter element has of a filter medium () folded in a zig-zag manner and designed in a tubular shape. End plates () are arranged on the filter medium end faces. End plate () has a concentric opening as well as a first annular ring () and a second annular ring (), and a sealing groove () arranged between the rings. A reinforcement plate () is arranged at the end plate and has an annular surface () extending in axial direction across folds of the filter element.