Patent ID: 7481926
Filing Date: 2009-01-27
Classification: B01D

Abstract:
1. A filter device for filtering liquids or gases comprising a housing that can be opened and a filter element disposed in the housing, wherein the filter element comprises a first element which at least partially covers an outer structure, and on the housing there is a second element which operatively engages the first element covering the outer structure, and wherein an intermediate element is provided, said intermediate element being equipped with openings such that an operative engagement is established between the first and second elements only when a contour of the first element at least substantially corresponds to the contour of the openings in the intermediate element, wherein the filter element is an essentially cylindrical filter element comprising a zigzag pleated filter medium,and the filter medium is connected to axial end disks, and one of the axial end disks simultaneously serves as the element covering the outer structure, and wherein the inside contour of the housing facing the end disk which serves as the element covering the outer structure is provided with a central mandrel, and the intermediate element and the second element which operatively engages the element covering the outer structure are axially movably mounted on the central mandrel.