Hydraulic actuator
US6662559B1 · kind B1 · utility
3Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 2002 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | May 28, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H20/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention provides a hydraulic actuator suitable for use in marine and other harsh environments. In the presently preferred embodiment, the hydraulic actuator includes a motor that is coupled to a pump assembly that is configured to displace hydraulic fluid. The hydraulic actuator also includes a cylinder bore that has an upper chamber and a lower chamber which are separated by a movable piston member. Pressure actuated valves are used to regulate the flow of high pressure hydraulic fluid to the cylinder bore. The pressure actuated valves are actuated in response to pressure generated by the pump assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.