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:
Feb. 25, 2014
Filed:
Nov. 19, 2008
Lionel Winiar, Ronchin, FR;
Patrick Bommart, Rueil Malmaison, FR;
Lionel Winiar, Ronchin, FR;
Patrick Bommart, Rueil Malmaison, FR;
Railtech International, Raismes, FR;
Abstract
The mold for aluminothermic welding of metal rails has two components made of identical rigid refractory material and suitable for fitting around two ends of rails to be welded, each component includes: a lower part having a face defining a mold cavity suitable for enveloping the foot and a core of the ends of the rails, and a channel opening at the bottom into a lower region of the mold cavity and having at the top an opening and an upper part including a cooling chamber connected to the mold cavity and capable of containing the heads of the rail ends, the cooling chamber forming a non-compartmentalized volume to which the channel is connected via the opening and which is bounded by an external wall of each mold component.