Method of forming precious metal electrical contact
US4403411A · kind A · utility
4Cited by
12References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 4, 1981 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | Feb 4, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49218
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A precious metal electrical contact dot formed from a ribbon of base metal having one substantially flat side and one cylindrically rounded side has precious metal plated on the rounded side and a central ridge formed on the substantially flat side. A tab is formed by cutting a short length from the end of the ribbon, and the substantially flat side of the tab is resistance-welded to the wall of an electrical socket. The wall may be essentially copper, the base metal essentially nickel, and the precious metal essentially gold. A precious metal, gold, wash may be applied over the tab and adjacent wall surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.