Patent ID: 6437275
Filing Date: 2002-08-20
Classification: H01H

Abstract:
An electrode for a vacuum circuit breaker produced by the process of:pressure-forming one of an alloy powder of a refractory metal and a highly conductive metal and a powder mixture of a refractory metal powder and a highly conductive powder into a compact in a shape having vanes separated by slit grooves and a central recess; forming, from one of a highly conductive metal and a highly conductive alloy, an electrode rod having a protrusion on a central axis thereof; coupling the electrode rod to the compact by fitting the protrusion of the electrode rod into the recess of the compact; and heating the compact and the electrode rod to a temperature below a melting point of the highly conductive metal to sinter the compact into an electrical contact and metallurgically bond the electrical contact and the electrode rod.