Flexible resonance unit for a speaker
US8804989B2 · kind B2 · utility
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14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2011 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Feb 10, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A resonance device for a speaker is provided. The device includes a speaker unit and a resonance unit. The speaker unit outputs a sound corresponding to a signal. The resonance unit is fixed to the speaker unit to provide a space for allowing a sound to resonate. The resonance unit is flexible, and the space for allowing a sound to resonate is variable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.