Patent · US Expired

Piston pump for hydraulic vehicle brake system

US6652245B2 · kind B2 · utility

11Cited by

4References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Manfred Hauser · Schwieberdingen, DE
Norbert Alaze · Markgröningen, DE
Thorsten Duermeier · Lambach, DE
Ursula Eckstein · Schwieberdingen, DE
Erika Mank · Ludwigsburg, DE

Key dates

Filing date	Mar 27, 2002
Grant date	Nov 25, 2003
Priority date	—
Expiry date	Mar 27, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B53/20
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a piston pump for a hydraulic, slip-controlled vehicle brake system. The piston pump has a piston, which is inserted with a part of its length into a sleeve. A tubular filter that encompasses the piston is attached to the sleeve and constitutes a captive retainer, which secures the piston in a captive fashion in the sleeve. In order to reduce an axial mobility of a sealing ring that seals the piston in the pump housing, the invention proposes attaching the filter, which limits the axial mobility of the sealing ring, to the sleeve in an axially mobile fashion.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.