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:
Sep. 21, 2004
Filed:
Jul. 16, 2003
Klemens Dworatzek, Edingen, DE;
Karlheinz Muenkel, Oberderdingen-Flehingen, DE;
Marion Hartmann, Hockenheim, DE;
Filterwerk Mann & Hummel GmbH, Ludwigsburg, DE;
Abstract
A filter device having a filter element arranged in a filter housing with a housing port closed by a housing cover with a housing ring. A medium to be purified is supplied to the filter element through an inlet in the filter housing. On the discharge side of the filter element, purified medium is discharged through an outlet in the filter housing. A pressure relief valve is integrated into the housing cover and is subjected to the pressure on the inlet side of the filter element. The housing cover is constructed in two parts and includes an inside cover and an outside cover. The pressure relief valve is mounted in the inside cover, which closes the housing port. A discharge path for discharging medium exhausted from the filter housing through the pressure relief valve is formed between the inside cover and the outside cover.