Moving-magnet electromagnetic device with planar coil
US8718317B2 · kind B2 · utility
0Cited by
6References
13Claims
0Family size
Inventor
Key dates
| Filing date | May 19, 2011 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Nov 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electromagnetic device includes a housing, a planar coil disposed inside the housing, and a magnetic diaphragm disposed inside the housing, wherein the plane of the planar coil is substantially in parallel with the plane of the magnetic diaphragm, wherein the planar coil is separated from the magnetic diaphragm, and wherein the magnetic diaphragm is moveable in the presence of an exterior pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.