Speaker device for improving mid/high-range frequencies
US7319772B2 · kind B2 · utility
7Cited by
8References
5Claims
0Family size
Inventor
Key dates
| Filing date | Jan 7, 2005 |
| Grant date | Jan 15, 2008 |
| Priority date | — |
| Expiry date | Apr 30, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/345
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker device for improving mid/high-range frequencies includes a magnetic base, a frame annularly mounted to the magnetic base, a cone mounted to an inner side of the frame, a voice coil mounted to the cone and suspended in a gap of the magnetic base, and a deadening phase plug mounted on a central portion of the magnetic base. The magnetic base includes a T-iron, a magnet, and a pole plate. The deadening phase plug is made of a sound-absorbing material for absorbing and eliminating sound waves generated by the voice coil and the cone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.