Axial piston pump with fluid bearing arrangement

Details Axial piston pump with fluid bearing arrangement Axial piston pump with fluid bearing arrangement

2005-05-17

2005-05-17

Tyler, Cheryl J. (Department: 3746)

Pumps

Three or more cylinders arranged in parallel, radial, or...

Condition responsive fluid control

C417S270000, C091S499000, C091S504000, C091S506000, C092S012200

Reexamination Certificate

active

06893228

ABSTRACT:
A pump includes a stationary pump housing having a central longitudinal axis and a housing chamber, a rotating pump shaft extending through the pump housing and into the housing chamber, a rotating barrel fixed to the pump shaft and including a plurality of pump chambers, and a plurality of rotating and reciprocating pump pistons. Each pump piston is at least partially contained within a respective pump chamber. A fluid delivery control assembly is provided to selectively vary the amount of fluid delivered by the pump. At least one pressurized fluid pool is located between a portion of the rotating barrel and a portion of the pump housing. The pressurized fluid pool may be located along an end surface of the rotating barrel and/or along a side of the rotating barrel.

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