Hydrostatic bearing arrangement for pump swashplate having secondary angle
US7757598B2 · kind B2 · utility
0Cited by
25References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2008 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Oct 29, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S92/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hydraulic axial piston pump is designed with a secondary swashplate angle for providing improved performance and life. The secondary swashplate angle produces a sideload on the swashplate that is reacted by the pump's housing. A hydrostatically balanced thrust bearing is used to counteract the sideload produced by the secondary swashplate angle. The bearing design includes a tiltable pad or shoe supplied with pressurized fluid from the pump's discharge port. The same fluid that supplies the tiltable pad may also supply the pump's cradle bearings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.