Electricity: measuring and testing – Magnetic – Railroad rail flaw testing
Reexamination Certificate
2006-02-07
2006-02-07
Ledynh, Bot (Department: 2862)
Electricity: measuring and testing
Magnetic
Railroad rail flaw testing
C324S207170, C033S338000
Reexamination Certificate
active
06995556
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.
REFERENCES:
patent: 2311715 (1943-02-01), Thorne
patent: 3505742 (1970-04-01), Fiechter
patent: 3515984 (1970-06-01), McClaren et al.
patent: 3864039 (1975-02-01), Wilmarth
patent: 3990154 (1976-11-01), Theurer et al.
patent: 4144519 (1979-03-01), Chamuel
patent: 4160204 (1979-07-01), Holmgren et al.
patent: 4181430 (1980-01-01), Shirota et al.
patent: 4259018 (1981-03-01), Poirier
patent: 4417208 (1983-11-01), Hachtel et al.
patent: 4704577 (1987-11-01), Junker et al.
patent: 4866380 (1989-09-01), Meins et al.
patent: 4904939 (1990-02-01), Mian
patent: 5094004 (1992-03-01), Wooten
patent: 5554933 (1996-09-01), Logue
patent: 5636026 (1997-06-01), Mian et al.
patent: 5949293 (1999-09-01), Akamatsu et al.
patent: 6397130 (2002-05-01), Carr et al.
patent: 2003/0140509 (2003-07-01), Casagrande
patent: 54-50358 (1979-04-01), None
patent: 55-52901 (1980-04-01), None
patent: 357173701 (1982-10-01), None
patent: 358082103 (1983-05-01), None
Carr Gary A.
Nejikovsky Boris
Costellia Jeffrey L.
ENSCO Inc.
Ledynh Bot
Nixon & Peabody LLP
Whittington Kenneth J.
LandOfFree
Electromagnetic gage sensing system and method for railroad... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electromagnetic gage sensing system and method for railroad..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetic gage sensing system and method for railroad... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3674817