Magnetic gear arrangement having a variable gear ratio
US8810098B2 · kind B2 · utility
4Cited by
4References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2009 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Jan 6, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K51/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic gear arrangement is provided having a magnetically active gear member that generates a first magnetic field, which is modulated by interpoles. The modulated magnetic field generates magnetic poles on a magnetically passive gear member, and these poles form a second magnetic field. The material of the passive gear member is sufficiently magnetically hard that the first and second magnetic fields interact to couple the motion of the active and passive gear members according to a given gear ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.