Multi-magnetic speaker
US8630441B2 · kind B2 · utility
8Cited by
0References
6Claims
0Family size
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Key dates
| Filing date | Dec 14, 2011 |
| Grant date | Jan 14, 2014 |
| Priority date | — |
| Expiry date | Dec 28, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-magnet speaker is disclosed. The multi-magnet speaker includes a frame defining a hollow space, a magnetic system defining a yoke and a plurality of magnetic gaps positioned in the hollow space, a diaphragm mounted on the frame and a plurality of coils attached to the bottom of the diaphragm. The diaphragm includes a plurality of vibrating membranes each defining a dome part and an arcuate portion radially extending from the periphery of the dome part. Each of the coils is received in the corresponding magnetic gap to drive the corresponding vibrating membrane to vibrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.