Portable stereophone
US4517418A · kind A · utility
17Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1983 |
| Grant date | May 14, 1985 |
| Priority date | — |
| Expiry date | Nov 7, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/1066
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A stereophone includes a pair of temporal pads which connect to a headband and engage the user's head above each ear. A support arm pivotally connects to each temporal pad and supports an ear cup over the user's ear. A locking mechanism enables the support arm to be positioned in a number of operating positions or swung to a transport position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.