System, valve assembly, and methods for oscillation control of a hydraulic machine
US11781573B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 5, 2021 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Apr 14, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/8613
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An example valve assembly includes a housing having an accumulator fluid passage configured to be fluidly coupled to an accumulator, a supply fluid cavity configured to be fluidly coupled to a source of fluid, a reservoir fluid cavity configured to be fluidly coupled to a reservoir of fluid, a head fluid cavity configured to be fluidly coupled to a head-side chamber of a hydraulic actuator, and a rod fluid cavity configured to be fluidly coupled to a rod-side chamber of the hydraulic actuator; a main spool that is axially-movable within the housing; and a balancing spool that is axially-movable within the housing based on an axial position of the main spool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.