Filtering means for the filtration of extraction beverages, in particular espresso

US5711880A · kind A · utility

Assignee

• The Braun Corporation · DE

Inventors

• Dieter Friedrich · Vockenhausen, DE
• Gunther Seidel · Frankfurt, DE
• Michael Machlitt · Idstein, DE
• Rolf Eimecke · Oberursel, DE
• Dieter Koch · Oberrohrdorf, CH
• Christof Miltenberger · Schmitten, DE
• Robert Wirsing · Dreieich, DE

Key dates

• Filing date: Aug 22, 1996
• Grant date: Jan 27, 1998
• Expiry date: Aug 22, 2016

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A47J31/4496
• WIPO field: Furniture, games
• WIPO sector: Other fields

Abstract

A filter for the filtration of extraction beverages includes a disk having a plurality of apertures through which the beverage extracted from the material to be extracted passes form the afflux side to the efflux side. Each aperture is formed by cut edges in the disk and by bending a cut edge away from the surface of the disk to form a roof-shaped dome. The filter is formed by a single punching, bending and embossing operation without scrap slug being produced.