Speaker
US10575099B2 · kind B2 · utility
0Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2018 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Jul 11, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker includes a center pole, a voice coil, a diaphragm, and a turbulent flow generator. A center pole includes a through hole formed in the center pole in an axial direction. The voice coil is disposed around the center pole. A diaphragm includes a center cap that is disposed to face an opening of the through hole. A turbulent flow generator is disposed inside the through hole. The turbulent flow generator generates a turbulent flow inside the through hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.