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:
May. 08, 1979
Filed:
Feb. 13, 1978
Applicant:
Inventors:
Andre Roche, Villars, FR;
Charles Schepacz, Firminy, FR;
Assignee:
Centre Technique des Industries Mecaniques, Senlis, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23P / ; B23P / ; B23P / ;
U.S. Cl.
CPC ...
20412943 ; 204D / ; 20412975 ;
Abstract
A pulsating current comprising only positive half-waves separated by zero-current intervals is fed into an electrolyte between two electrodes in which the cathode is constituted by a tool and the anode is constituted by a part to be machined in accordance with the profile of the cathode. The electrolyte is of the passivating type which preferably contains between 30 and 50 grams per liter of sodium nitrate.