Axial shaft seal

US7017913B2 · kind B2 · utility

Assignee

• Carl Freudenberg KG · DE

Inventors

• Thomas Klenk · Dossenheim, DE
• Eberhard Bock · Prüm, DE
• Thomas Kramer · Herford, DE
• Werner Hufnagel · Großbettlingen, DE
• Martin Heldmann · Lindenfels, DE
• Markus Clemens · Reichelsheim, DE
• Gilbert Pataille · Langres, FR

Key dates

• Filing date: Jun 25, 2003
• Grant date: Mar 28, 2006
• Expiry date: Jun 25, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16J15/36
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An axial shaft seal disposed between a housing wall and a rotating shaft includes an outer ring insertable into the housing wall in a stationary and sealing manner and an inner ring connectable to the shaft in a non-twisting and sealing manner. The outer ring includes a sleeve having a polymer material extending radially inward and having a spring bellows form. A radially inward end portion of the sleeve has a first sealing surface. The inner ring includes a ring flange extending radially outward so as to provide a second sealing surface for axially mating the first sealing face.