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. 26, 2002
Filed:
Mar. 09, 1999
Applicant:
Inventors:
Kiyoshi Shimojima, Ibaraki, JP;
Seigi Aoyama, Ibaraki, JP;
Hideo Kawano, Ibaraki, JP;
Koichi Tamura, Ibaraki, JP;
Takahiro Sato, Ibaraki, JP;
Takamitsu Kimura, Ibaraki, JP;
Masato Watabe, Ibaraki, JP;
Assignee:
Hitachi Cable Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23H 1/00 ;
U.S. Cl.
CPC ...
B23H 1/00 ;
Abstract
It is an object of the invention to provide an electrode wire for an electrical discharge machining apparatus, which is low-priced in cost of production, has sufficient conductivity and strength at high temperature and is suited for improving the speed of electrical discharge machining. Cu—Zn alloy covering layer is formed around a core metallic wire formed of Cu—0.02 to 0.2 Zr alloy or Cu—0.15 to 0.25 Sn—0.15 to 0.25 In alloy.