The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 1998
Filed:
Mar. 07, 1996
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A contact electrode for a vacuum interrupter including a conductive component having at least one selected from the group consisting of copper and silver, and an arc-proof component with a melting temperature of more than 1500.degree. C. In the contact electrode, a gradient A/X of a quantity of a composition component of the contact electrode on a surface or the contact electrode is 0.2-12 volume %/mm. Where, X1 is one point on the line of any radius R1 on the surface of the contact electrode, X2 is another point on the line of the radius R1 on the surface of the contact electrode, and X is a gap between the one point X1 and the another point X2 measured by mm, where X=X2-X1, and X2>X1 .gtoreq.0. A1 is a quantity of the composition component measured by volume % in the contact electrode at the one point X1, A2 is a quantity of the composition component measured by volume % in the contact electrode at the another point X2 and A is a difference between the quantities A1 and A2 of the composition component measured by volume %, where A=A2-A1.