Audio driver housing with expandable chamber for portable communication devices
US8433378B2 · kind B2 · utility
0Cited by
6References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2009 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Sep 28, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A portable communication device includes an audio driver movable within an audio driver housing which forms an expandable chamber. The portable communication device includes at least two portions that are moveably connected to each other allowing the device to be in at least a closed position and an open position. The audio driver can be maintained in a compressed position when the portable communication device is in an open position. Accordingly, the volume of the chamber is independent of the relative position between the portions forming the portable communication device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.