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:
Feb. 04, 1992
Filed:
Jul. 30, 1990
Applicant:
Inventors:
Takeshi Iwasaki, Aichi, JP;
Hisashi Yamada, Aichi, JP;
Assignee:
Mitsubishi Denki K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23H / ;
U.S. Cl.
CPC ...
219 6912 ;
Abstract
A wire guide of the type used in wire-type EDM machines is improved by separately manufacturing a ceramic collar or collars and the support which houses the die guide, and subsequently combining these elements within a casing. The use of ceramic ensures corrosion resistance, while separate manufacture assures that the die guide is not subjected to the potentially damaging heat required in firing the ceramic.