Evacuation of liquid from acoustic space
US9226076B2 · kind B2 · utility
41Cited by
32References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2014 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Sep 26, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/15
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An acoustic module, such as a microphone or speaker module, includes an acoustic membrane that vibrates to produce acoustic waves and an acoustic cavity through which acoustic waves produced by the membrane travel. A liquid removal mechanism removes liquid from the acoustic cavity. Such a liquid removal mechanism may include the acoustic membrane, heating elements, hydrophobic and/or hydrophilic surfaces, and so on. In some cases, the liquid removal mechanism may remove liquid from the acoustic cavity upon connection of the acoustic module and/or an associated electronic device to an external power source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.