Claw pole type synchronous motor
US5818143A · kind A · utility
4Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Sep 10, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2201/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A claw pole type synchronous motor has input frequency increasing portions in a form of notches or holes formed in portions of claw poles which have the lowest magnetic flux densities so that the motor operates in a range from a low frequency to a high frequency without lowering torques too much.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.