Patent · US Expired

Reciprocating piston pump with auxiliary support shaft

US6616420B2 · kind B2 · utility

5Cited by

5References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Norbert Alaze · Markgröningen, DE
Wolfgang Schuller · Cleebronn, DE
Erwin Sinnl · Meimsheim, DE

Key dates

Filing date	Dec 20, 2001
Grant date	Sep 9, 2003
Priority date	—
Expiry date	Dec 20, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B17/03
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a pump assembly for a hydraulic brake system with traction control, having an electric motor and a piston pump. To reduce a bearing load, the invention proposes rotatably supporting and thereby radially bracing a motor shaft, or an eccentric sleeve pressed onto the motor shaft, on both sides of pump pistons. To economize on installation space, a pump bearing is disposed in an end of the eccentric sleeve that protrudes past the motor shaft.

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