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:
Apr. 16, 2019
Filed:
Aug. 23, 2016
Meidensha Corporation, Tokyo, JP;
Kazuhiro Nagatake, Numazu, JP;
Kaoru Kitakizaki, Saitama, JP;
Keita Ishikawa, Tokyo, JP;
Shota Hayashi, Tokyo, JP;
Kosuke Hasegawa, Numazu, JP;
MEIDENSHA CORPORATION, Tokyo, JP;
Abstract
Disclosed is a vacuum circuit breaker () including a vacuum interrupter () accommodated in a ground tank () filled with insulating gas. At least one of a fixed electrode () and a movable electrode () of the vacuum interrupter () uses an electrode material in which particles containing a solid solution of a heat resistant element and Cr are finely and uniformly dispersed and in which Cu textures as a high conductive component are finely and uniformly dispersed. The electrode material contains 20 to 70% by weight of Cu, 1.5 to 64% by weight of Cr and 6 to 76% by weight of the heat resistant element relative to a weight of the electrode material. The particles of the solid solution in the electrode material have an average particle size of 20 μm or smaller.