Method forming an electric contact in a vacuum circuit breaker

Details Method forming an electric contact in a vacuum circuit breaker Method forming an electric contact in a vacuum circuit breaker

1995-06-07

1997-12-16

Vo, Peter

Metal working

Method of mechanical manufacture

Electrical device making

218129, 2281791, 164 94, H01R 4316

Patent

active

056971508

ABSTRACT:
According to the present invention there are provided a highly reliable electrode of high strength which undergoes little change even with the lapse of time, and a method for making the same, as well as a vacuum valve using such electrode and a vacuum circuit breaker using such vacuum valve. The vacuum circuit breaker has a fixed electrode and a movable electrode, each comprising an arc electrode, an arc electrode support member for supporting the arc electrode, and a coil electrode contiguous to the arc electrode support member, the arc electrode, the arc electrode support member and the coil electrode being formed as an integral structure by melting, not by bonding, particularly the arc electrode support member and the coil electrode being constituted by a Cu alloy containing 0.05-2.5% by weight of at least one of Cr, Ag, W, V and Zr.

REFERENCES:
patent: 3359623 (1967-12-01), Gwyn, Jr.
patent: 4471184 (1984-09-01), Sano et al.
patent: 4584445 (1986-04-01), Konshiwagi et al.
patent: 5347096 (1994-09-01), Bolongeat-Mobleu et al.

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