Hydraulic control valve with duplicate workports and integrated actuator oscillation control features
US11644050B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 2022 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Aug 9, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/7128
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An example valve assembly includes a first workport fluidly coupled to a first actuator; a second workport fluidly coupled to the first actuator; a third workport fluidly coupled to a second actuator, wherein the third workport is fluidly coupled to the first workport via a first fluid passage; a fourth workport fluidly coupled to the second actuator, wherein the fourth workport is fluidly coupled to the second workport via a second fluid passage; and a spool axially movable in a bore within the valve assembly, wherein when the spool is shifted axially in a first axial direction, pressurized fluid is provided to the first workport and to the third workport via the first fluid passage, and when the spool is shifted axially in a second axial direction opposite the first axial direction, pressurized fluid is provided to the second workport and to the fourth workport via the second fluid passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.