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:
Oct. 23, 1990
Filed:
Feb. 09, 1989
Applicant:
Inventor:
Andre Reiniche, Clermont-Ferrand, FR;
Assignee:
Compagnie Generale des Etablissements Michelin, Clermont-Ferrand, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ; C21D / ;
U.S. Cl.
CPC ...
266 90 ; 266104 ; 266111 ;
Abstract
A process for heat treating a carbon steel wire to obtain a fine pearlite structure is characterized by the following steps: (a) cooling the wire until the wire reaches a given temperature which is below the AC.sub.1 transformation temperature; (b) regulating the temperature of the wire to not more than 10.degree. C. above or below said given temperature by passing an electric current through the wire and effecting a modulated ventilation thereof; (c) cooling the wire.