Radial piston pump
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United States of America Patent
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-
Mar 20, 2001
Grant Date -
N/A
app pub date -
Aug 3, 1999
filing date -
Aug 29, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A radial piston pump comprising a rotating pump shaft (2), one portion (1) of which is connected to an eccentric ring (4) which is arranged rotationally fast thereon, said radial piston pump further comprising a needle roller bearing arranged on an outer peripheral surface of the eccentric ring (4), pump plungers (13) arranged radially of the pump shaft (2) in a star pattern in a pumping housing supported by end faces on the needle roller bearing, the bearing being configured as a self-contained, inseparable assembled unit in which the eccentric ring (4) is arranged within the needle roller bearing between rims (10, 11) of the needle roller bearing which advantageously reduces the axial design space requirement and simplifies assembly.
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