ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,214,814, issued on Feb. 4, was assigned to SERCEL (Carquefou, France).
"Method for monitoring the physical state of a rail" was invented by Thomas Bardainne (Paris).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for monitoring the physical state of a longitudinal element (IO) of a railway-type rail, the method having a step of detecting mechanical waves moving along the longitudinal element (IO), in particular due to the passing of a train, by means of an array of mechanical wave sensors placed along and in contact with the longitudinal element, the array having at least one first pair (A) of sensors each positioned at on...