System for transferring energy wirelessly
US8536738B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 2009 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Jul 13, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is disclosed a system for transferring energy wirelessly by an evanescent electromagnetic field. The system includes a housing including electrically conducting walls defining a space and an injector configured to inject electromagnetic waves into the space. A wall of the housing is configured to be placed adjacent to an electromagnetic energy reception device and includes one or more apertures. The frequency of the electromagnetic waves is lower than the cutoff frequency of the housing, and the one or more apertures have a size smaller than the waves wavelength so that an evanescent electromagnetic field is emitted from the one or more apertures of the wall and may reach the energy reception device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.