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:
Sep. 11, 1984
Filed:
Sep. 27, 1982
Katsumi Michishita, Fukuyama, JP;
Mitsugi Kawano, Fukuyama, JP;
Fujio Aoshima, Nagoya, JP;
Yukio Kato, Kani, JP;
Tetsuhiro Asamoto, Nagoya, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Nippon Kokan Kabushiki Kaisha, Tokyo, JP;
Abstract
There is disclosed a method for electrical discharge machining of a workpiece in the form of a roll by application of an electrical voltage across said workpiece and an electrode or electrodes mounted opposite to each other with a predetermined gap therebetween, and more particularly such method wherein each such electrode is formed by plural electrode segments separated from one another by insulators, and the electrical discharge operation is performed with said electrode segments in each electrode short-circuited to one another in the rough machining step and with said electrode segments insulated from one another in the finish machining step for reducing the working time.