Return to neutral device for a hydraulic apparatus
US6701825B1 · kind B1 · utility
46Cited by
7References
62Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 10, 2002 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Jul 10, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B1/324
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a hydrostatic device using an axial piston pump, a return plate is mounted so that it contacts the movable swash plate of the hydrostatic transmission. The plate is biased by a spring-type mechanism to force the swash plate to return to neutral, and the set position of the plate may be externally adjusted to compensate for irregularities. A second plate may be used where necessary based on the arrangement of the return plate with respect to the pump cylinder block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.