Primary seals for master-slave cylinder systems

US6712362B2 · kind B2 · utility

Assignee

• Mannesmann Sachs AG · DE

Inventors

• Klaus Krappmann · Gochsheim, DE
• Andre Gemeinhardt · Obereuerheim, DE
• Hai Teng Sui · Schonungen, DE
• Dieter Gebauer · Geringswalde, DE
• Boleslaw Tulaczko · Niederwerrn, DE
• Volker Stampf · Schweinfurt, DE

Key dates

• Filing date: Oct 9, 2001
• Grant date: Mar 30, 2004
• Expiry date: Oct 9, 2021

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2300/08
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In a master/slave cylinder system for clutches or brakes, primary seals have bevels which interact with similar bevels of formations on housings of the respective cylinders. Along with the lowest possible friction in the region of the sealing lips, this permits carrying out uncomplicated pressure/negative-pressure filling in the case of the master cylinder. The primary seals slide by the wedge of effects in the direction of the pressure on the bevels of the annular formations and reduce the annular bearing face of the sealing lip in a frictionally optimized manner.