Patent · US Expired

Pump aggregate for a hydraulic vehicle braking system

US7168929B2 · kind B2 · utility

43Cited by

16References

18Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Heinz Siegel · Stuttgart, DE
Norbert Alaze · Markgröningen, DE
Dieter Merklein · Ludwigsburg, DE
Michael Schlitzkus · Dietmannsried, DE
Andreas Weh · Kempten (Allgäu), DE
Alexander Bareiss · Immenstadt im Allgäu, DE

Key dates

Filing date	Jul 25, 2001
Grant date	Jan 30, 2007
Priority date	—
Expiry date	Mar 28, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH02K7/075
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A pump unit for a hydraulic vehicle brake system with traction control has an electric motor driving a radial piston pump. A rotor shaft of the pump unit has a hollow shaft with two standardized, hardened cylindrical pins that are press-fitted into the ends of the hollow shaft. The rotor shaft can be produced simply, economically, and without metal-cutting machining. The hollow shaft has high bending and torsional strength. The rotor shaft has a small diameter at the bearing points, which makes a small bearing diameter and thus a small installation space for the pump unit possible.

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