Magnetic gear arrangement
US8546988B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2009 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Jun 18, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K51/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic gear arrangement having a first gear member for generating a first magnetic field and a second gear member for generating a second magnetic field. An interpole member is provided between the first and second gear members for coupling the two magnetic fields and controlling the gear ratio between the two gear members. The interpole member includes a unitary body of magnetizable material and associated control wiring, and is arranged such that when current is passed through the wiring, space regions of the unitary body are magnetized by an electrically-induced magnetic field. Discrete interpoles, the number and spacing of which define the gear ratio, are then formed in the unitary body between adjacent magnetized regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.