Patent ID: 9643109
Date: 2017-05-09
CPC Classifications: B01D

Claim:
1. A filter device, comprising: a filter housing having a detachable housing cover thereon; a filter element in said filter housing; a retainer in said filter housing releasably securing said filter element in said filter housing, said retainer having corresponding and mating first and second threads forming a screw connection between said housing cover and said filter element; a sealing element in a sealing region between said filter element and said housing cover; an end cap on said filter element, said end cap having a connecting piece extending on said end cap, said first thread being on said connecting piece and at least partially in an interior cavity of said filter element; and a receiving connection on said housing cover, said second thread being on said receiving connection, said receiving connection being threaded into said connecting piece by said first and second threads and being a pipe piece formed as a separate component from and mounted on said housing cover, said pipe piece being secured by pressing into said housing cover in such a way that said pipe piece can be replaced for adapting to said filter element with pre-defined specifications and such that said first and second threads can be engaged to locationally secure said filter element in said filter housing, said sealing element being between and forming a seal between an outside of said receiving connection and an inside of said connecting piece, said sealing region being formed by a thread-free section in an entrance area of said connecting piece and a thread-free section on an initial region on said receiving connection.