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. 04, 2009
Filed:
Dec. 06, 2006
Applicants:
Ulrich Stahl, Laudenbach, DE;
Uwe Felber, Abtsteinach, DE;
Inventors:
Ulrich Stahl, Laudenbach, DE;
Uwe Felber, Abtsteinach, DE;
Assignee:
Carl Freudenberg KG, Weinheim, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 46/52 (2006.01);
U.S. Cl.
CPC ...
Abstract
A filter element comprises a filter medium () with an inflow and an outflow side wherein at least one channel () which is variable in its dimensions is associated to the filter medium (). An arrangement comprises a filter element and a flow channel, wherein the flow channel can be at least partially closed and opened by means of the filter element. Such a filter element and such an arrangement solve the objective to realize a filter system which ensures an engine-friendly operation mode and a long service life of the filter element.