Asymmetric stator teeth in an electric motor
US8847460B2 · kind B2 · utility
7Cited by
14References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 2011 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Nov 28, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2201/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A permanent magnet motor includes a permanent magnet rotor, a stator surrounding the rotor having a plurality of teeth radially inwardly oriented toward a longitudinal axis of the stator wherein each tooth has a tooth length and a tooth tip surface geometry. An asymmetric air gap is defined by variations in the tooth lengths and tooth tip surface geometries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.