ELECTRODE STRUCTURE FOR VACUUM CIRCUIT BREAKER
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United States of America Patent
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Issued Date -
Sep 15, 2011
app pub date -
Oct 2, 2009
filing date -
Nov 4, 2008
priority date (Note) -
Abandoned
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Abstract
Contact plate 11 and Contact base for generating axial magnetic field 12 are made of copper-based alloy such as copper-chromium alloy for example. On the periphery of contact base for generating axial magnetic field 12, Outer circumferential section film 17 is provided. Outer circumferential section film 17 is formed by plasma irradiation of chromium that is a arcing part having a melting point higher than the melting point of contact plate 11.
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