Dual rotor having varying air gaps
US8207648B2 · kind B2 · utility
23Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2009 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Mar 30, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/2791
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dual-rotor motor in which inner slot angle φi is larger than outer slot angle φo. An inner notched portion is provided on both circumferential ends of an inner head. This inner notched portion provides a broader space between the inner head and an inner rotor toward both utmost ends of the inner head. An outer notched portion is provided on both circumferential ends of an outer head. This outer notched portion provides a broader space between the outer head and the outer rotor toward both utmost ends of the outer head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.