Headphone
US4445005A · kind A · utility
50Cited by
10References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1981 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Apr 30, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/1058
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An arcuate central band piece has coupled thereto at both ends arcuate side band pieces of the same curvature of the central band piece by coupling means, forming a substantially circular headphone band as a whole. Each of the coupling means is arranged so that the side band pieces can be turned about axes lying in the plane formed by the band pieces, by which the headphone band can be folded in thirds. A receiver is attached to each of the side band pieces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.