Headphone
US8233655B2 · kind B2 · utility
6Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2009 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Jun 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R5/0335
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Headphones capable of giving an optimum mounting feeling to the head of everybody by merely being mounted and without special adjustment, and also capable of being mounted for many hours without giving stress to the user. A headphone cabinet is connected to one end of a link arm, a head pad is provided at the other end of the link arm, and a lateral pressure produced by a spring member is distributed to the headphone cabinet and the head pad via the link arm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.