Servovalve apparatus for use in fluid systems
US5005600A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1990 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Jan 31, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2322
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A servovalve apparatus for use in fluid systems which comprises a flexible fluid conduit and a conductive coil which surrounds at least a portion of the conduit adjacent its upstream end. An armature is secured to the flexible conduit so as to be adjacent the conductive coil. Two permanent magnets, preferably formed of a rare earth metal material, are provided adjacent the armature on opposite sides thereof, the magnets being positioned such that one magnet presents a north magnetic pole facing the armature and the other magnet presents a south magnetic pole facing the armature. A receiving plate is provided adjacent the downstream end of the flexible conduit, the receiving plate having one or more channels formed therein for receiving fluid from the conduit. Preferably, the channels in the receiving plate originate within and communicate with a concave socket in the receiving plate which has substantially the same radius of curvature as the path over which the downstream end of the flexible conduit moves during flexure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.