Ear radio
US4539708A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1983 |
| Grant date | Sep 3, 1985 |
| Priority date | — |
| Expiry date | Jul 1, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/088
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A self-contained, fully operational radio device adapted in size and configuration for implacement and retention at the entrance to an ear canal, said device being fully self-supported by surrounding ear cartilage, thereby eliminating any need for connecting wires or other radio circuitry. The device includes a casement having an outward and an inward housing for containing the respective radio circuitry and speaker means for the radio device. A battery is also contained within the outward housing for powering the radio system. The maximum outside dimensions of the radio device and enclosed radio circuitry are less than 3/4 of an inch in diameter and one inch in length. Various functional controls are provided for convenient operation of on/off, frequency selection, and volume level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.