Piston pump

US6082244A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Heinz Siegel · Stuttgart, DE
• Manfred Hauser · Schwieberdingen, DE
• Norbert Alaze · Markgröningen, DE
• Dieter Merklein · Ludwigsburg, DE
• Wolfgang Schuller · Cleebronn, DE
• Julius Bayrhof · Stavenhagen, DE
• Walter Kremsreiter · Dewitt Court, DE
• Joachim Evertz · Sonthofen, DE
• Joerg Zielke · Immenstadt im Allgäu, DE
• Ralf Zitzelsberger · Marktoberdorf, DE
• Andreas Weh · Kempten (Allgäu), DE
• Bernd Allenzon · Wiggensbach, DE

Key dates

• Filing date: Jul 30, 1998
• Grant date: Jul 4, 2000
• Expiry date: Jul 30, 2018

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B53/20
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a piston pump having a piston that is axially displaceable in a bush. In order to keep the piston in the bush in a manner secured against loss, a tubular filter is secured to the bush in the extension thereof; the filter has a smaller inside diameter than the bush and in this way keeps the piston in the bush.