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:
Jun. 06, 1989
Filed:
Dec. 09, 1986
Applicant:
Inventors:
Susumu Yamamoto, Itami, JP;
Yoshimitsu Aoki, Itami, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H / ;
U.S. Cl.
CPC ...
219 6912 ;
Abstract
An improved cut wire used as an electrode in electrical discharge machining which has higher tensile strength at high temperatures. It is a composite wire having a core of stainless steel and a covering layer of copper or copper alloy provided around the core. The diameter and the tensile strength of the cut wire and the percentage of the sectional area of the core to that of the entire cut wire are important parameters in the composite wire.