Electric motor
US5345133A · kind A · utility
46Cited by
10References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1993 |
| Grant date | Sep 6, 1994 |
| Priority date | — |
| Expiry date | Jun 3, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/27
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
High permeability material plates used to construct the stators and the rotor of a motor are formed of the same material, thus reducing the number of fabrication processes and material cost. Also, the rotor containing permanent magnets is cylindrical and two stators are arranged around the inner circumference and the outer circumference of the permanent magnets, respectively, thereby increasing efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.