Antenna unit for use in navigation system
US5757327A · kind A · utility
85Cited by
10References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1995 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Jul 27, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/061
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna unit for use in a navigation system includes a bottom cover and a unit case, a circuit board and an antenna main body are stored in the bottom cover, a cylindrical storage portion in the bottom cover is for storing the circuit board and the antenna main body therein, the cylindrical storage portion being formed integrally with the surface of the bottom cover, a cylindrical joint portion being threaded with the cylindrical storage portion, said cylindrical joint portion being formed integrally in the unit case, and the cylindrical joint portion being threaded with the cylindrical storage portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.