Booster pilot valve
US6644351B2 · kind B2 · utility
27Cited by
19References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2001 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Mar 27, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86702
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A booster pilot valve operable at ultra low power levels is provided. The booster valve includes a moveable spool capable of directing a fluid flow to at least two different paths. The booster valve may be coupled to a piezotronic three-way valve, which controls the movement of the spool by redirecting a main fluid flow along different paths to create a force on the spool. The piezotronic valve is capable of actuation at very low power levels such as might be provided by a Profibus PA or other Bus system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.