Rotational apparatus including a passive magnetic bearing
US7902706B2 · kind B2 · utility
2Cited by
3References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2007 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Nov 17, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/0236
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotational apparatus with one or more passive magnetic bearing(s) is described. The rotational apparatus includes a rotor with a tapered magnetic ring and a stator with a tapered array of shorted conducting circuits. A repulsive force between the tapered magnetic ring and the tapered array of shorted conducting circuits acts a passive magnetic bearing that centers the rotor radially in a stator cavity and that repels the rotor axially away from an end of the stator cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.