Brushless motor
US6218760A · kind A · utility
35Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1999 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Dec 21, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K29/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brushless motor includes (a) a rotor magnet having plural magnetic polarities and (b) a stator core facing the rotor magnet via an annular space. The stator core has plural teeth wound by coils, and a teeth width ranges from not less than 1.7 mm to not more than 2.2 mm, or an outer diameter of the rotor core vs. the teeth width ranges from not less than 8 to not more than 12. This structure allows the brushless motor to rotate with less vibrations, lower noise and lower current consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.