High speed permanent magnet rotor
US4638200A · kind A · utility
37Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1985 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Dec 23, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The rotor (1), which has magnets (3) in particular of the rare earth-cobalt type, is surrounded by a hoop formed by a metal which has been cold work-hardened and has a high elastic strength so as to form a sleeve which exerts on the subjacent magnets a high pre-stressing force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.