Electric motor
US11075566B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2018 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Feb 19, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2201/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric motor having a rotor having permanent magnets and a first gear arranged on an inner surface of the rotor, a stator having electromagnetic coils wound around sections of the rotor, a shaft arranged to be rotatably supported in the electric motor, the shaft having a second gear arranged on an outer surface of the shaft, and at least one rotary gear member arranged in a space between the first gear and the second gear. A number of the permanent magnets is the same as a number of the electromagnetic coils, and both the permanent magnets and the electromaqnetic coils are evenly spaced apart in a circumferential manner. The rotor further having a plurality of non-magnetic sections positioned between the plurality of permanent magnets to form an outermost layer of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.