Multi-diaphragm speaker driven by multiple voice coil plates and a shared permanent magnet pair
US11044562B1 · kind B1 · utility
0Cited by
3References
8Claims
0Family size
Assignee
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Key dates
| Filing date | May 12, 2020 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | May 12, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/063
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments are disclosed of a speaker containing multiple diaphragms and multiple voice coils. Each diaphragm is driven by its own voice coil plate, and at least two of the voice coil plates share at least one or more parts of a permanent magnet pair. In some embodiments, the speaker generates bi-directional sound. Optionally, the multiple diaphragms are of varying sizes, such that the diaphragms are configured to transmit different frequency ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.