Control motor for a servo valve
US5024247A · kind A · utility
13Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1990 |
| Grant date | Jun 18, 1991 |
| Priority date | — |
| Expiry date | Apr 23, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2278
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control motor for a servo valve which includes pole screws defining an armature space, first and second coils supported by the pole screws, respectively, a soft metal armature which is resiliently mounted to a thin walled tube and a permanent magnet which polarizes the armature. An annular body carrying said pole screws and providing for a magnetic path between the pole screws and the permanent magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.