Speaker unit having two voice coils wound around a common coil bobbin
US4783824A · kind A · utility
60Cited by
14References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1985 |
| Grant date | Nov 8, 1988 |
| Priority date | — |
| Expiry date | Oct 18, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2209/022
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker unit having a pair of voice coils each wound around a common coil bobbin and a first magnet for driving one coil of the pair of voice coils. A second magnet is provided for suppressing flux leakage of the first magnet and driving one coil of the pair of voice coils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.