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. 08, 1988
Filed:
Dec. 17, 1986
Applicant:
Inventors:
Jun Aramaki, Nagoya, JP;
Toshiaki Tanaka, Nagoya, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H / ;
U.S. Cl.
CPC ...
219 / ; 2041292 ; 2042 / ;
Abstract
An electric spark machining apparatus includes a cooling device which is arranged so that machining liquid pumped up from a reservoir and fed to an electric spark machine is controlled in temperature to minimize a temperature difference between machining liquid entering into the electric spark machine and the latter.