Patent ID: 6893561

Claim:
A liquid filter with a metal housing produced using an original casting forming technique and in which a filter cartridge is installed through which a liquid flows such that the filter cartridge separates a housing inlet from a housing outlet in a sealing manner, and with a lid which can be installed on and sealingly connected to the housing by rotating it relative thereto, wherein structures which form housing working surfaces are arranged on the housing such that the housing working surfaces communicate with working surfaces on the lid when the lid is installed on the housing, said structures which form housing working surfaces being oriented on the housing in such a way that the structures can be produced without an undercut relative to a removal direction of the housing from a mold in which the housing is cast, said mold having a parting line; wherein the communicating working surfaces of the housing and lid secure the lid to the housing; wherein the structures in the area of the parting line extend precisely in the removal direction from the mold, and wherein the working surfaces on the housing are produced solely by the original casting forming technique.