Planar coil linear actuator and transducer
US11700488B2 · kind B2 · utility
0Cited by
0References
20Claims
0Family size
Inventors
Key dates
| Filing date | Jun 7, 2022 |
| Grant date | Jul 11, 2023 |
| Priority date | — |
| Expiry date | Jun 7, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A planar coil linear actuator/transducer. A stack of individually driven planar coils are used. A common core passes through the center of the stack of coils. A mobile magnet resides in the core. The coils are selectively energized in order to drive the magnet as desired. It is possible to control both frequency and amplitude by controlling the motion of the magnet. In a preferred embodiment, each planar coil is created as a copper (or other conductive material) trace on a multi-layer printed circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.