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. 06, 1980
Filed:
Jun. 21, 1978
Charles A Shupe, Beaconsfield, CA;
Canron Corporation, West Columbia, SC (US);
Abstract
A technique for heat treating the upper surface of the head of an in situ rail is disclosed. A car carrying an induction heater followed by an air quencher and then an air and water quencher is passed along the track. In this way the upper surface of the rail head passes through successive stages of heating from ambient temperature, austenization, hardening, tempering and cooling to ambient temperature thus bringing about desired hardening of the rail head. The tendency of the rail to bend concave upwardly due to this heat treatment is counteracted by applying an upward mechanical force to the rail to tend to bend the rail in the opposite direction i.e. concave downwardly. The mechanical force is applied by a lifting mechanism carried on the rail car, the lifting mechanism progressively bending the rail simultaneously with the heat treatment.