Audio speaker with back volume containing adsorptive material
US10349167B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2015 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | May 18, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/2849
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An audio speaker having a speaker housing surrounding a back volume that is divided into a rear cavity behind a speaker driver and an adsorption cavity separated from the rear cavity by a permeable partition, is disclosed. More particularly, the adsorption cavity may be defined between the speaker housing and the permeable partition, and may be directly filled with adsorptive particles to adsorb gas during sound generation. The permeable partition may allow the gas to flow between the rear cavity and the adsorption cavity, and may retain the adsorptive particles within the adsorption cavity. Other embodiments are also described and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.