Power generation apparatus including an electret and an opposing electrode on the surface of a movable member facing a dielectric
US8304958B2 · kind B2 · utility
4Cited by
6References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 21, 2009 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Dec 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N1/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power generation apparatus includes a dielectric, a movable member being opposed to the dielectric with a predetermined distance, and an electret and an opposing electrode that are formed on the surface of the movable member facing the dielectric so as to generate a fringe electric field penetrating the dielectric between the two electrodes. When the volume occupancy of the dielectric between the electret and the opposing electrode varies in accordance with a displacement of the movable member, the power generation apparatus outputs the electric charge induced in the opposing electrode as electric current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.