Motor
US4806813A · kind A · utility
26Cited by
14References
3Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 17, 1987 |
| Grant date | Feb 21, 1989 |
| Priority date | — |
| Expiry date | Mar 17, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S310/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor comprises a rotor made of a permanent magnet and pairs of yokes having pairs of magnetic pole parts arranged round the circumference of the rotor. The rotor is arranged to be pivotally carried by a bearing part disposed at one end of the yoke. A position detecting element which detects the magnetic pole position of the rotor is carried by the yoke. An exciting coil is wound round each pair of the yokes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.