Voice coil bobbin and speaker system
US8059857B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Mar 9, 2007 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Sep 14, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2209/027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A voice coil bobbin, which transmits a motive force from the voice coil wound around the bobbin to a diaphragm, includes a main part, a reinforcement part formed on the surface side of the main part, and a middle part formed between the main part and the reinforcement part and made of a material which has a lower density than the other two parts, preferably a non-woven cloth. Thus, there can be provided with the simple-design, high-rigidity voice coil bobbin with high internal loss and a speaker system capable of high-quality sound reproduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.