Earphone device with bass adjusting function
US8532325B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2010 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Feb 26, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/2811
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An earphone device with a bass adjusting function is provided. The earphone device includes an accommodating portion and an extension segment. The accommodating portion has an inner chamber for accommodating a speaker. The extension segment which is hollow-shaped and has a first space and a second space therein, and the first space is in communication with the inner chamber of the accommodating portion, and when a portion of the extension segment is adjusted from a first position to a second position, the first space, the second space, and the inner chamber of the accommodating portion are in communication, so as to increase a volume of the back chamber of the speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.