Earphone
US10993009B2 · kind B2 · utility
2Cited by
17References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2019 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Jan 7, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/2826
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An earphone with a first acoustic cavity, a second acoustic cavity, and an electro-acoustic transducer configured to deliver acoustic energy into the first and second acoustic cavities. A port acoustically couples one of the first and second acoustic cavities to a different volume. The port comprises an opening with a mesh structure that is insert molded into the port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.