Leak detection means

US7073794B2 · kind B2 · utility

Assignee

• Carl Freudenberg KG · DE

Inventors

• Eberhard Bock · Prüm, DE
• Erich Prem · Hemsbach, DE
• Rolf Vogt · Oftersheim, DE

Key dates

• Filing date: Mar 17, 2004
• Grant date: Jul 11, 2006
• Expiry date: Mar 23, 2024

Classification

• Technology area (CPC G): Physics
• CPC primary: G01M3/045
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sealing arrangement for sealing a machine element, preferably a shaft, with a sealing ring and leak-detection means that comprises a sensor for detecting the leak, and a depot for picking up the leak. The depot is monitored by the sensor and the depot consists of an absorbent and/or swellable material, and is arranged so as to permit delayed leak detection by the sensor.