Piston pump

US6193481A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Norbert Alaze · Markgröningen, DE
• Friedrich Megerle · Cologne, DE
• Ernst-Dieter Schaefer · Neckartenzlingen, DE
• Wolfgang Schuller · Cleebronn, DE
• Guenther Schnalzger · Blaichach, DE
• Ralf Zitzelsberger · Marktoberdorf, DE
• Gerd Baur · Märkisch Buchholz, DE
• Michael Hellebrandt · Bürgberg, DE

Key dates

• Filing date: Sep 13, 1999
• Grant date: Feb 27, 2001
• Expiry date: Sep 13, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B53/168
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A piston pump, which is provided as a return feed pump for a slip-regulated motor vehicle brake system. In order to simplify the manufacture, a sleeve in the form of a tubular piece is clamped between a fastening element which is inserted into the cylinder bore using a self-clinching technique, and the cylinder bore, and is thus sealed and fixed in place. In addition to the simple manufacture of the sleeve out of reasonably priced tubular material, the piston pump has the advantage of a sealing of the sleeve in the cylinder bore without a separate sealing element such as a sealing ring.