Earphone
US10827248B2 · kind B2 · utility
1Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2019 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Feb 25, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/2888
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An earphone with a first acoustic cavity, an electro-acoustic transducer configured to deliver acoustic energy into the first acoustic cavity, and a port that acoustically couples the first acoustic cavity to a different volume, wherein the port comprises a series of through-holes that are open to the first acoustic cavity and the different volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.