Filter for liquids, in particular internal-combustion engine lubricant oils

US5589060A · kind A · utility

Assignee

• Knecht Filterwerke GmbH · DE

Inventors

• Hans Gebert · Sankt Augustin, DE
• Rolf M ohle · Scheppach, DE
• Dietmar Sonntag · Waiblingen, DE
• Elke Bruss · Asperg, DE
• Dietwart Guntert · Sachsenheim, DE
• Hubert M uller · Stuttgart, DE

Key dates

• Filing date: Sep 14, 1993
• Grant date: Dec 31, 1996
• Expiry date: Sep 14, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S210/13
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A filter for liquids is disclosed herein. The filter includes a filter housing containing an exchangeable filter element. A support part is provided within the housing that is separable from the at least one filter element and extends at least partly centrally through the interior space of the filter element. A means is provided for releasably attaching one end of said support part to the filter housing. The housing includes first and second radial inner seals for separating a crude space surrounding an exterior of the filter element from a clean space located within interior of the filter element with the radial inner seals being mounted within the housing at the axial ends of the filter element. The filter element is folded star-shaped and sealed on the face side and provided on the inside at each of its two axial ends with a sleeve having an interior portion resting against the radial inner seals. The first radial seal includes an extension portion contained within a groove formed in the support part for separating the crude space from the clean space. An overflow valve is contained within the support part for establishing a flow connection between said crude space and said inte…