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.

Date of Patent:
Jan. 24, 2017

Filed:

Jul. 23, 2009
Applicants:

Taichiro Tamida, Tokyo, JP;

Takashi Hashimoto, Tokyo, JP;

Akihiko Iwata, Tokyo, JP;

Tatsushi Sato, Tokyo, JP;

Inventors:

Taichiro Tamida, Tokyo, JP;

Takashi Hashimoto, Tokyo, JP;

Akihiko Iwata, Tokyo, JP;

Tatsushi Sato, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H 1/02 (2006.01);
U.S. Cl.
CPC ...
B23H 1/028 (2013.01); B23H 1/022 (2013.01); B23H 2300/20 (2013.01);
Abstract

An electric discharge machining apparatus includes: electrodes the total quantity of which is equal to N; an alternating-current power source; and capacitors the total quantity of which is equal to N. The alternating-current power source applies an alternating voltage commonly to the electrodes. One end of each of the capacitors is connected to a corresponding one of the electrodes, whereas the other ends of the capacitors are commonly connected to the alternating-current power source.


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