High pressure pump with improved hub
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United States of America Patent
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Apr 29, 2003
Grant Date -
N/A
app pub date -
Dec 10, 2001
filing date -
Jun 8, 1999
priority date (Note) -
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Abstract
A pump has a main unit (18) for pumping a transferred liquid which is actuated by an secondary unit (20) which pumps a working liquid. The secondary unit (20) has a hub (64) which is rotably mounted in a housing (16). The hub has a cylindrical guiding surface (SG) which is rotatable in the housing. A shoulder (FE) axially positions the hub in the housing. The guiding surface and shoulder cooperate with rotation guiding and axial positioning elements on the housing. The hub connects to a swashplate (62) which actuates a piston (54).
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