Pressure adjustor and method of manufacturing the same, speaker device using the pressure adjustor, electronic device, and vehicle
US8767998B2 · kind B2 · utility
19Cited by
13References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2010 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Apr 18, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pressure adjustor includes a sheet-like supporter formed of unwoven fabric or woven fabric, a plurality of activated carbon powder particles attached to the supporter, and binders binding the plurality of activated carbon powder particles to each other. If this pressure adjustor is disposed inside a cabinet of a speaker device including a speaker unit provided in the cabinet, a speaker device is obtained which has an excellent bass reproduction effect even if the device is made small.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.