Headphone
US8213665B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2007 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | May 3, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R5/0335
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A headphone includes a headband and a left housing and a right housing. The left housing and the right housing are mounted to respective ends of the headband through respective hangers. Each housing accommodates a drive unit. Sliders including hollow cylindrical members are mounted to the respective hangers, and are slidably supported at slidably supporting portions at the respective ends of the headband. A cord, disposed between the left and right housings and used to pass drive electric current to the drive unit in one of the housings, is spirally accommodated in the hollow cylindrical members making up the respective sliders so that the cord is capable of being stretched and compressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.