Chair equipped with a speaker
US7130440B2 · kind B2 · utility
14Cited by
7References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 16, 2003 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | Dec 5, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A chair equipped the a speaker is provided with a frame that forms the structural skeleton of the chair, and a speaker unit that is installed to the frame; and wherein hollow pipe is used for the frame, and furthermore wherein the frame functions as an acoustical resonating section or acoustical space for the speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.