Flat panel horn loudspeaker
US11317212B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Sep 12, 2020 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Sep 12, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/066
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A distributed mode actuator (DMA) includes a flat panel extending in a plane and a rigid member(s) extended parallel to the plane. The members are mechanically attached to or glued and/or embedded within the face of the flat panel. All associated members are free to vibrate perpendicular and horizontally to the plane. The DMA also includes a magnet and electrically-conducting coil. The coil and magnet are mechanically coupled to the member or associated member. When the coil is energized, an interaction between a magnetic field of the magnet and a magnetic field from the coil applies a force sufficient to generate vibrations and/or movement perpendicular and horizontally to the plane. The DMA also includes components embedded within and attached to the plane, and indentations within the plane, to facilitate acoustical and vibrational waves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.