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:
Nov. 18, 2014
Filed:
Jul. 26, 2012
Steffen Ackermann, Speyer, DE;
Ralf Bauder, Ketsch, DE;
Duc Cuong Nguyen, Laatzen, DE;
Mann+Hummel GmbH, Ludwigsburg, DE;
Abstract
A filter device () for an internal combustion engine includes a separator that is embodied as a cyclone preseparator (), a main filter element () exchangeably arranged in a housing compartment () of the filter housing (), and a secondary filter element (. The housing compartment () includes insertion stays (). The main filter element () is embodied in as a double bellows filter including a first radially inwardly positioned filter bellows () and a second radially outwardly positioned filter bellows () surrounding it. Upon closing of a servicing housing cover () a sealing force is generated that acts onto the main filter element () and is maintained in the closed state of the servicing cover ().