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. 08, 1992
Filed:
Oct. 07, 1991
Applicant:
Inventors:
James E Huebler, Brookfield, IL (US);
John M Arnold, Brighton, MI (US);
Narayan C Saha, Lake Villa, IL (US);
Assignee:
Institute of Gas Technology, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23H / ; B23H / ;
U.S. Cl.
CPC ...
219 6915 ; 219 6917 ;
Abstract
An electrode for an electric discharge machining apparatus comprising a wall which forms a hollow body open on at least one end, the open end having a shape of the opening to be cut in a structural member. The cutting edge of the electrode is formed by the wall at the open end of the electrode and has a contour which is complementary to the surface contour of the side of the structural member facing away from the electrode. The cutting edge has a thickness of about 0.005 inches to about 0.125 inches.