Pump aggregate for a hydraulic vehicle braking system
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United States of America Patent
Stats
-
Jan 30, 2007
Grant Date -
Feb 5, 2004
app pub date -
Jul 25, 2001
filing date -
Jul 29, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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