Patent · US Expired

Electric switch

US4578547A · kind A · utility

7Cited by

7References

5Claims

0Family size

Assignee

International Standard Electric Corporation · US

Inventors

Horst Gunther · Blankenloch, DE
Hermann Oesterle · Nagold, DE

Key dates

Filing date	Oct 1, 1984
Grant date	Mar 25, 1986
Priority date	—
Expiry date	Oct 1, 2004

Classification

Technology area (CPC H)Electricity
CPC primaryH01H19/005
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Electric switches whose fixed contacts (3) are formed by the conductors on a printed circuit board (1), which are coated with a layer of noble metal, the connections between the fixed contacts provided on a contact path (2) and electrically connected among each other, extend outside the contact paths (2) of the movable contacts. Prior to the application of the layer of noble metal the connecting lines are covered and, therefore, a considerable saving of noble metal results.

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