Cassette filter

US7288130B2 · kind B2 · utility

Assignee

• Carl Freudenberg KG · DE

Inventors

• Renate Tapper · Bensheim, DE
• Thomas Schroth · Worms, DE
• Thomas Caesar · Weinheim, DE

Key dates

• Filing date: Sep 26, 2002
• Grant date: Oct 30, 2007
• Expiry date: Oct 19, 2023

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2265/06
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A cassette filter comprising a frame and a pleated filter material that is inserted therein, in addition to a protective grid having passage holes. The protective grid is fastened at a distance from the filter material in the frame and has a flow resistance that is smaller than that of the pleated filter material. The protective grid includes at least one film strip that is bent around the passage holes, said film strip extending parallel relative to the direction of flow of the medium to be filtered, and in that the protective grid recurrently contacts at least one other identically bent film strip outside the passage holes in contact points and is glued to said other film strip in the contact points.