Cup-seal non-return valve

US5511464A · kind A · utility

Assignee

• ITT Automotive Europe GmbH · DE

Inventors

• Rudolf Cezanne · Hofheim, DE
• Peter Gebhardt · Stockelsdorf, DE
• Ralf Jahn · Eschborn, DE
• Horst Laczny · Gifhorn, DE

Key dates

• Filing date: Sep 20, 1994
• Grant date: Apr 30, 1996
• Expiry date: Sep 20, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/7834
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In order to protect a cup-seal non-return valve (1) against permanent deformation, it is suggested to provide radial supporting walls (15) between the cylindrical inner wall (10)* (*translator's note: the correct reference numeral is `14`) and the sealing lip (13). Preferably, three supporting walls (15), roughly 1 mm thick, are provided because both the natural stability and the valve function are safeguarded this way.