Stack of membrane filter pockets commonly potted at their corners

US9656192B2 · kind B2 · utility

Assignee

• WTA VOGTLAND GMBH · DE

Inventors

• Reinhard Voigt · Gotha, DE
• Kurt Bock · Erfurt, DE
• Eberhard Semmler · Blankenhain, DE
• Volker Albrecht · Plauen, DE
• Barbara D. Zimmerman · Chesterfield, US

Key dates

• Filing date: Sep 21, 2012
• Grant date: May 23, 2017
• Expiry date: Sep 21, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F1/444
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A filter element for cleaning liquids, having a stack of at least two filter membrane pockets, which are substantially flat and include a flexible, liquid-permeable filter material for retaining waste particles and/or microbes, wherein each filter membrane pocket has a substantially polygonal shape with at least three corners and a corresponding number of edges, wherein the filter membrane pockets are stacked with a defined distance and aligned with each other, wherein aligned corners of the filter membrane pockets are embedded in a casting covering only part of the adjacent edges such that the casting for each corner is spaced from the castings of the neighboring corners.