Tunable earphone
US8831266B1 · kind B1 · utility
Assignees
Inventor
Key dates
| Filing date | Nov 18, 2013 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Nov 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/2826
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tunable earphone includes a body, a front cavity, a rear cavity and a decorating plat. The body includes a small air hole and a large air hole. The front cavity and the rear cavity are respectively disposed on the body. The decorating plate covers the rear cavity and includes a receiving groove, a shielding member and a channel. The shielding member and the channel are disposed in the receiving groove. When the decorating plate is rotated to a first position, the shielding member shields the large air hole, the channel corresponds to the small air hole, so that the front cavity communicates with the rear cavity through the channel. When the decorating plate is rotated to a second position, the shielding member shields the small air hole, the channel corresponds to the large air hole, so that the front cavity communicates with the rear cavity through the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.