Electric motors
US8643256B2 · kind B2 · utility
0Cited by
5References
21Claims
0Family size
Inventor
Key dates
| Filing date | Jun 8, 2011 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Mar 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/225
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electric motors are disclosed with coils which induce a magnetic flux field which by its relationship with ferromagnetic poles provide the motoring force without use of an auxiliary magnetic field. The motors may be employed with fixed or pivotably mounted brushes. Pivotable brushes for electric motor brushes are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.