Axial piston pump with fluid bearing arrangement
US6893228B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 2002 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Mar 2, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B49/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.