Audio transducer improvements
US5230021A · kind A · utility
3Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 12, 1991 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Jul 12, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/26
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audio transducer having a pair of magnets supported to provide a magnet gap within which a flexible diaphragm supporting an electrical coil is received. The diaphragm is formed of a pair of flexible cylindrical webs joined at their centers to support the coil within the magnet gap. The diaphragm is provided with a row of perforations on either side of the gap to provide flexibility and is aligned centrally within the gap by flexible foam strips attaching the magnets to the diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.