Plane plate vibration device and switch employing the same
US6937124B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2005 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Feb 9, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2215/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A plane plate vibration device includes a plane plate, a coil portion having a first coil and a second coil, the first coil being wound on a circumference of the plane plate in parallel with the plane plate, the second coil being wound along inside of the first coil in parallel with the plane plate, and magnetic field generating mechanisms that are provided in parallel with the plane plate and generate magnetic fields in directions perpendicular to directions of currents respectively flowing through the first coil and the second coil. The currents flow through the first coil and the second coil in reverse directions, the directions of magnetic fields perpendicular to the currents respectively flowing through the first coil and the second coil give forces in the same direction, and the plane plate vibrates in a direction of thickness by adjusting the currents respectively flowing through the first coil and the second coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.