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:
Jul. 25, 1978
Filed:
Aug. 30, 1976
Applicant:
Inventors:
Charlie Maurice Levitt, Johannesburg, ZA;
Samuel Chatterley, Florida Lake, ZA;
Peter John Flinn, Transvaal, ZA;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
219 / ; 125 / ; 219 / ;
Abstract
A method of cutting a material, which may be insulating or conducting, which includes the steps of placing a pair of parallel spaced electrodes, preferably taking the form of a pair of wires, close to or in contact with the material, applying a voltage across the electrodes and causing relative movement between the electrodes and the material as the spark erodes the material to effect the cut. The invention also provides apparatus for carrying out this method.