Patent · US Expired

Low-power electric contact

US4339644A · kind A · utility

17Cited by

7References

15Claims

0Family size

Assignee

W. C. Heraeus GmbH · DE

Inventors

Fritz Aldinger · Rodenbach, DE
Elke Biberbach · Hanau, DE
Albrecht Bischoff · Bruchköbel, DE
Nils Harmsen · Bruchköbel, DE

Key dates

Filing date	Oct 1, 1980
Grant date	Jul 13, 1982
Priority date	—
Expiry date	Oct 1, 2000

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31895
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A low-power electrical contact particularly suitable for switching and plug-in connections. The contact comprises an outer contact layer and a substrate composed of a copper base alloy. The contact layer consists essentially of an alloy of 35-55% by weight gold, 18-33.5% silver, 30-40% palladium, and (i) 1-6% indium, or (ii) 0.5-2% tin together with 0.5-2% indium. An intermediate layer of nickel or copper-nickel may be interposed between the contact layer and the substrate.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.