Headphone
US6728388B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2000 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Nov 21, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/1008
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An ear-hanging type headphone has an ear hanger arm attached to a rotation shaft portion that is movably mounted on a convex housing of a headphone body at a location that is offset from a central axis of the convex housing by a predetermined eccentric angle. Upon moving the rotation shaft portion relative to the convex housing a distance between the ear hanger arm and a sound emitting side of the headphone is altered to facilitate placing the headphone on the ear. The rotation shaft portion can be spring biased toward one end position and a retaining element can be used to temporarily retain the rotation shaft portion at another end position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.