Headphone
US6542615B1 · kind B1 · utility
13Cited by
14References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 2000 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Jul 13, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R5/0335
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A headphone capable of preventing foreign substances, dust and the like from entering a housing and of enhancing acoustic characteristicsin which a hanger of a headband in a housing having a speaker unit is of a storage type and the housing can be swung in a driving direction or a twist direction with respect to the headband, includesan opening provided between the housing and the headband that is blocked by a shielding plate formed on one side of the hanger and a protruded portion formed on the side opposite to the shielding plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.