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:
Jul. 10, 1990
Filed:
Mar. 01, 1989
Applicant:
Inventor:
Naoki Watanabe, Aichi, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H / ;
U.S. Cl.
CPC ...
219 6912 ;
Abstract
A method of restoring a wire electrode which has been broken during an electric discharge machining operation. A new wire electrode, which replaces the broken wire electrode, moves from an initial machining point to an electrode breaking point with the application of a voltage between a workpiece and the wire electrode to generate an electric discharge therebetween resulting in smooth movement of the electrode.