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. 21, 2012
Filed:
Dec. 23, 2009
Steffen Ackermann, Speyer, DE;
Ralf Bauder, Ketsch, DE;
Duc Cuong Nguyen, Laatzen, DE;
Mann + Hummel GmbH, Ludwigsburg, DE;
Abstract
The invention relates to a filter device (), in particular for filtering intake air of an internal combustion engine. The filter device () comprises a separator that is embodied in particular as a cyclone preseparator (), moreover a main filter element () exchangeably arranged in a housing compartment () of the filter housing (), as well as a secondary filter element () that in the flow direction of the fluid to be cleaned is arranged downstream. The housing compartment (), for facilitating premounting of the main filter element () therein, comprises insertion stays (). The main filter element () is embodied in particular as a double bellows filter, comprising a first radially inwardly positioned filter bellows () and a second radially outwardly positioned filter bellows () surrounding it. Upon closing of a servicing cover () that closes the housing compartment () a sealing force is generated that acts onto the main filter element () and is maintained in the closed state of the servicing cover ().