Earphone with pressure equilibrium means
US11206471B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2019 |
| Grant date | Dec 21, 2021 |
| Priority date | — |
| Expiry date | Mar 11, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an earphone equipped with a pressure equalizing means, and more specifically to an earphone equipped with a pressure equalizing means, in which a speaker unit is disposed inside an earphone housing in a longitudinal direction and a first air path is formed to discharge sound waves, generated by the diaphragm of the speaker unit, to the external ear canal through one side of the speaker unit. When air inside the external ear canal is discharged out of the speaker unit, air is discharged into the vibration space of the speaker unit by using the first air path, and is then discharged out of the speaker unit through a second air path formed in the other side of the top surface of the speaker unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.