Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Boris Nejikovsky0
Gary A. Carr0
Date of Patent
February 7, 2006
0Patent Application Number
106227730
Date Filed
July 21, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An electromagnetic gage sensing system having sensor heads positioned over each rail of a railroad track that measures both rail gage and height distance above the rails of a railroad track. Each sensor head includes an array of electromagnetic field generating coils and an array of electromagnetic field sensors positioned above each rail so as to extend substantially across the rail surface. A method of measuring gage distance is also provided in which lateral EM field output signal indicative of an edge surface of a rail is sensed.
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