Decoupling element impervious to liquid fluids

US7748749B2 · kind B2 · utility

Assignee

• WESTFALIA METALLSCHLAUCHTECHNIK GMBH & CO. KG · DE

Inventors

• Dietmar Baumhoff · Olpe, DE
• Frank Bender · Drolshagen, DE
• Karl-Heinz Münker · Hilchenbach, DE
• Stefan Hauk · Hilchenbach, DE
• Matthias Weiss · Hilchenbach, DE

Key dates

• Filing date: Oct 10, 2006
• Grant date: Jul 6, 2010
• Expiry date: Jul 11, 2028

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L51/023
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

For connection of pipelines which are subject to vibration, for example pipelines in vehicle exhaust systems, a liquid-tight decoupling element is used which includes a, e.g. multi-layer wound, metal hose and a tube accommodated in coaxial relationship inside or outside of the metal hose. A first axial fitting firmly secures one end of the tube. The tube is sized to protrude into a second axial fitting, regardless whether the metal hose is completely compressed or completely stretched, to allow movement of the tube in axial and torsional directions in relation to the second axial fitting.