Seal arrangement

US4979756A · kind A · utility

Assignee

• AVT Anlagen- und Verfahrenstechnik GmbH · DE

Inventors

• Wolfgang Krambrock · Weingarten, DE
• Helmut Bercx · Wolfegg, DE

Key dates

• Filing date: May 26, 1989
• Grant date: Dec 25, 1990
• Expiry date: May 26, 2009

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/7036
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A ring seal on moved machine parts, in particular for use on a rotary slide valve, is proposed, which is formed by a pressurized annular channel (11) with a ring seal (12). In a connection flange (10), for this purpose an annular channel (11), parallel to the center axis (19), is formed with a pressure space (15) for pressurization of the ring seal (12).