Brushless DC motor having an outer rotor
US4891567A · kind A · utility
55Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1988 |
| Grant date | Jan 2, 1990 |
| Priority date | — |
| Expiry date | Jul 12, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2201/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Herein disclosed is a brushless DC motor of high performance, which has its construction simplified and feasible made by sandwiching an annular coil between two stator yokes having a plurality of magnetic elements in the circumferential direction, by magnetically shorting the two stator yokes through a shorting member, and by providing a magnetic pole detector for detecting the positions of the magnetic poles of a rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.