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. 30, 2014
Filed:
Dec. 16, 2008
Rainer Loos, Freiberg, DE;
Rainer Loos, Freiberg, DE;
Mann+Hummel GmbH, Ludwigsburg, DE;
Abstract
An oil filter for an internal combustion engine has a filter housing having an interior and an exchangeable filter cartridge arranged in the interior of the filter housing. A drainage valve is arranged in the filter housing and has a valve seat and a valve member. The valve member is movable relative to the valve seat in an opening direction that is parallel and coaxial to a longitudinal axis of the filter housing and oriented toward the interior of the filter housing. The valve member is received in the valve seat in a closing direction opposite to the opening direction. The valve member can be pushed out of the filter housing in the closing direction. The valve member and the filter cartridge form together a servicing unit for joint exchange of the valve member and the filter cartridge.