Retractable antenna system
US5650789A · kind A · utility
24Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1995 |
| Grant date | Jul 22, 1997 |
| Priority date | — |
| Expiry date | Oct 10, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/244
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A retractable antenna system for an electrical device includes a rod antenna movable to an extended position or to a retracted position, an electrical coil carried by one end of the rod antenna and movable therewith to the extended and retracted positions, and a coil antenna carried by the electrical device coaxially with the rod antenna such as to enclose the electrical coil and to be electromagnetically coupled thereto in the retracted position of the rod antenna and electrical coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.