Ultra-high frequency tuning device of the sliding contact type
US4376923A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1981 |
| Grant date | Mar 15, 1983 |
| Priority date | — |
| Expiry date | Mar 4, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P7/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The tuning device comprises a hollow cylindrical part and a moving rod which penetrates a cavity by passing from one side to the other of the hollow cylindrical member. This cylindrical member is fixed and integral with the cavity. It has an end located within the cavity, the end being longitudinally cut to form n slots (n being an integer greater than 1) for forming n elastic members, which are covered with an electrolytic silver deposit. Joined silver contacts are welded to the end of the elastic members to provide the contact with the moving rod and prevent poor conduction of surface currents due to wear to the electrolytic deposit at the contacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.