Earphone
US7551748B2 · kind B2 · utility
121Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2005 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Jul 17, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/1033
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The receiver unit includes a receiver body, a housing containing this receiver body, a cord connected to the receiver body, and a cord protector for protecting the cord. The cord protector is a plate-like member having a substantially rectangular shape, and includes an engaging portion and a semicircular portion. The cord protector is formed of soft material such as urethane rubber having Shore hardness of about A90, and its wall thickness is set to be 0.3 to 0.6 mm (0.5 mm, for example).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.