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. 03, 2018
Filed:
Dec. 06, 2013
Sncf Reseau, Paris, FR;
Arnaud Lorieux, St Leu la Foret, FR;
Claude Monnet, Paray-le-Monial, FR;
Serge Detain, Auzouer en Touraine, FR;
Rémy Delolmo, La Seyne sur Mer, FR;
SNCF RESEAU, Paris, FR;
Abstract
Method for the aluminothermic welding of rails, involving the steps of: —triggering an aluminothermic reaction in a crucible, —pouring the metal resulting from said reaction into the mold so as to fill the molding cavity from the rail flange, —after filling the cavity, triggering a second aluminothermic reaction above the rail head, and pouring the metal resulting from said reaction into the cavity in the region of the rail head. The mold used in the method is designed to fit over the ends of two rails to form a molding cavity comprising a crucible positioned above the rail head region so that it can be fed with molten metal of the cavity via a secondary passage.