Speaker with a large volume chamber and a smaller volume chamber
US9154869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2012 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | May 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A portable electronic device having an enclosure having a top wall, a bottom wall, at least one sidewall connecting the top wall to the bottom wall, an acoustic output opening and a back volume defined by the top wall, the bottom wall and the at least one sidewall. A speaker driver is positioned within the enclosure, the speaker driver including a sound radiating surface having a top face and a bottom face for emitting sound waves therefrom. A frame member is attached to the speaker driver, the frame member forming a front volume chamber acoustically coupling the top face of the sound radiating surface to the acoustic output opening and a back volume chamber that overlaps a side of the speaker drive and acoustically couples the bottom face of the sound radiating surface to the back volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.