Push-push multiple magnetic air gap transducer
US6996247B2 · kind B2 · utility
3Cited by
6References
46Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 2002 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Nov 5, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2209/022
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electromagnetic transducer such as an audio speaker, having a push-push geometry in which there are two or more air gaps and the magnetic flux across the air gaps is in the same orientation. If there are more than one voice coil, the voice coils may thus be generating the same electromagnetic polarity by being wound in the same direction about the bobbin, or by being wound in opposite directions and having separate, opposite polarity electrical connections. The transducer exhibits high linearity over a long travel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.