Encapsulated magnets in a permanent magnet rotor
US5488260A · kind A · utility
27Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 15, 1993 |
| Grant date | Jan 30, 1996 |
| Priority date | — |
| Expiry date | Oct 15, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a permanent magnet rotor, the circumferential gaps between circumferentially spaced sintered or cast magnets are filled by a plastic or resin material which also coats the outer circumferential surface of the magnets to secure the magnets to the rotor base. The plastic or resin material has a filler of particulate permanent magnet material to thereby provide a more gradual circumferential variation in magnetic flux between circumferentially adjacent magnets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.