Dual-gap transducer with radially-charged magnet
US7477757B2 · kind B2 · utility
6Cited by
0References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 13, 2005 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | May 9, 2026 |
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 multi-gap geometry in which there are two or more magnetic air gaps over which magnetic flux flows in a same radial orientation. The magnetic flux is provided by one or more radially-charged magnets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.