Mann+hummel Gmbh

Ralf Blum

Markus Kolczyk

Martin Weindorf

Herbert Jainek

Andreas Franz

Sven Epli

Gunnar-Marcel Klein

Rainer Loos

Thomas Petschl

Wolfgang Cedzich

Joerg Kramer

Roland Hartmann

Ralf Kaiser

Birgit Herbst

Mathias Schuster

Steffen Ritter

Alexander Piry

Kai Knickmann

Daniel Lucas

Ellen Fritz

Uwe Kaiser

Joachim Kegel

Hans-Günter Wächter

Jörg Kramer

A filter medium with antimicrobial action and a cabin air filter for filtering air for the interior area of motor vehicles, having at least one first filter layer where pollutants can be retained, and a second filter layer adjacent to the first filter layer is provided. The second filter layer is attached to the on-flow side of the first filter layer and contains antimicrobial agents.

Antimicrobial filter medium and cabin air filter

A filter arrangement for liquids has a filter housing and a functional carrier arranged inside the filter housing. A cylindrical filter element is inserted axially into the filter housing and defines an unfiltered side and a filtered side inside the filter housing. A non-return diaphragm is secured within the filter housing, wherein the non-return diaphragm is arranged on the functional carrier so as to effect an axial and/or radial sealing action of the unfiltered side relative to the filtered side of the filter arrangement.

Liquid filtering device

The invention concerns a filter insert () that is provided as an exchangeable insert in a filter, in particular an oil filter, fuel filter or the like of an internal combustion engine. The filter comprises a filter housing () that can be separated along a separating plane () and the exchangeable filter insert () extending in an axial direction (). Two housing parts () of the filter housing () are sealed relative to one another along the separating plane () by means of a seal (). The seal () is secured slidably and captively in the axial direction () on the filter insert ().

Exchangeable filter insert

A liquid filter, in particular for the lubricating oil of an internal combustion engine, having a housing with an inlet and an outlet formed from a housing pot having a substantially downwardly open filter element installation opening and a screw-on cover that closes the installation opening, and a filter element arranged in the housing, sealingly separating the inlet from the outlet. The screw-on cover has a drain for residual liquid present in the housing with a round drain opening arranged in the central axis of the housing. A device for opening and closing the drain opening is arranged in the area of the drain and connected to an end disk of the filter element so that it moves relative to the drain opening and opens the drain when the cover is unscrewed.

Liquid filter

Growing community of inventors

Aham, Germany

Ralf Blum