Eddy current apparatus
US5942826A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1997 |
| Grant date | Aug 24, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K49/046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The rotor or the stator of the apparatus has inductor coils whose respective axes are parallel to the axis of rotation and distributed at regular intervals along a circle centred on the axis of rotation. Each coil is traversed by a cylindrical pole core, one end of which is provided with a pole shoe of larger cross-section. An armature disc travels past these pole shoes with interposition of a gap. In relation to the direction of travel of the armature disc, each pole shoe offers an area which is larger in front than to the rear of the radial plane passing through the axis of rotation and through the axis of the corresponding coil. Each pole shoe has a rear edge of convex general shape in a plane parallel to the armature disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.