US Patent No: 4,689,995

Number of patents in Portfolio can not be more than 2000

Method and apparatus for the non-destructive testing of railroad track rails

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ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

A device for inspecting a rail 2 of a railway track comprises a truck 1 running on the rail and carried by a railway vehicle. The truck carries at least one ultrasonic emitter and/or receiver probe 7, 8 in contact with the upper surface of the rail. At least one probe 8 is displaceable on a slide 6 while another probe 7 is fixed to the truck 1. The device comprises a jack 9 for displacing the probe 8 as a function of variations of the energy received by the receiver probe to compensate for fluctuations in the height of the rail.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MATIX INDUSTRIES S.A.PARIS2
SOCIETE NATIONALE DES CHEMINS DE FER FRANCAIS, 88, RUE SAINT LAZARE, 75009 PARIS, FRANCEPARIS1

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Turbe, Jean Pierre Nanteuil-les-Meaux, FR 1 11

Cited Art

Patent Info (Count) # Cites Year
 
The United States of America as represented by the Secretary of Transportation (1)
4,235,112 Rail flaw detector position control 23 1979

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
HERZOG CONTRACTING CORP. (2)
5,341,683 Dynamic rail longitudinal stress measuring system 17 1992
5,386,727 Dynamic rail longitudinal stress measuring system 35 1993
 
Speno International S.A. (2)
5,574,224 Process and device for the continuous nondestructive control of rails on a railway line by ultrasonics 10 1995
5,804,731 Ultrasonic device for measuring the internal defects of a rail 7 1997
 
LORAM MAINTENANCE OF WAY, INC. (1)
5,339,692 Ultrasonic rail web centerline detector 10 1992
 
ROCKWELL INTERNATIONAL CORPORATION (1)
4,932,618 Sonic track condition determination system 15 1989
 
SOUTHWEST RESEARCH INSTITUTE (1)
5,507,185 Adaptive scanning technique for ultrasonic testing utilizing realtime lift-off detection 3 1993
 
Sperry Rail Service, Inc. (1)
5,970,438 Method and apparatus for testing rails for structural defects 14 1998
 
SPERRY RAIL, INC. (1)
5,419,196 Ultrasonic side-looker for rail head flaw detection 22 1993
 
The Nippon Signal Co., Ltd. (1)
5,903,517 Moving body control apparatus 4 1997
 
TOKIMEC INC. (1)
5,786,535 Flaw detection apparatus employing tire probes having ultrasonic oscillators mounted therein 13 1996