Piston for a hydraulic brake and method for production thereof

US8037810B2 · kind B2 · utility

Assignees

• Continental Teves AG & Co. OHG · DE
• Sander Umformtechnik GmbH & Co., KG · DE

Inventors

• Hans-Dieter Leidecker · Eschborn, DE
• Götz Mehner · Nierstein, DE
• Matthias Würz · Oberursel, DE
• Norbert Leidecker · Eschborn, DE
• Uwe Zeibig · Achern, DE
• Herwig Bauer · Bad Vilbel, DE

Key dates

• Filing date: Dec 18, 2006
• Grant date: Oct 18, 2011
• Expiry date: Aug 30, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/4927
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A piston for a hydraulic brake configured as a bowl, open on one side, with a longitudinal axis, a wall and a bottom, and is delimited on an open end face by a rim with an axial abutment surface which is movable into abutment on a brake pad. The bottom has an essentially plane outside surface, a wall thickness of the bottom is thicker than a minimum wall thickness of the wall, and at a transition area between bottom and wall, a wall thickness of the wall is continuously increasing towards the bottom, thus, the wall passing over into the bottom in a slope. Furthermore, a method including forming a disc-shaped round blank into a bowl-type hollow cylinder, and upsetting the hollow cylinder in its longitudinal axis so that the bottom material is thickened due to the upsetting operation.