Valve for controlling fluids
US6805329B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2002 |
| Grant date | Oct 19, 2004 |
| Priority date | — |
| Expiry date | Sep 19, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/703
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve for controlling fluids for reservoir injection systems, includes a hydraulic coupler and a piezoelectric actuator. The hydraulic coupler includes a first piston, a second piston, and a coupler chamber disposed between the two pistons. The piezoelectric actuator is in communication with the first piston. The first piston is embodied as substantially cup-shaped, and the second piston is disposed in a recess in the first piston. The coupler chamber is disposed between the second piston and an inner bottom region of the first piston. As a result, a hydraulic coupler of compact design can be furnished without reversing the direction of motion of the two pistons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.