Headphone
US7184565B2 · kind B2 · utility
21Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 11, 2004 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Dec 8, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R5/033
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In order to provide headphones with a cord-winding mechanism capable of favorably retracting and winding a cord, a cord-winding mechanism is incorporated in either or both of the casings of housings 1L and 1R constituting headphones; and a lock is released by joining the left and right casings together, so that the cord is retracted and wound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.