Title:
AUTOMATIC CARRIAGE ALIGNMENT
Document Type and Number:
WIPO Patent Application WO2001050097
Kind Code:
A3
Abstract:
An ultrasonic aligning device for laterally aligning a rail testing device with respect to a rail (10) has an ultrasonic transducer (18) formed of an array (18) of closely spaced ultrasonic elements (20.1-20.18), with center to center distances between elements (20.1-20.18) being selected to determine incremental lateral positions of the array (18) relative to the rail (10). The ultrasonic elements (20.1-20.18) are selectively actuated to cause the generation of ultrasonic beams towards the base portions (22) of the rail. Reflections from the base portions (22), are detected to produce reflection signals representative of the incidence of the ultrasonic beam onto said base portion (22). The reflection signals are processed by a reflections analyzer for a determination of the lateral offset of the ultrasonic array (18) relative to the rail (10). A position signal indicative thereof of produced and used to laterally displace the array (18) to achieve a desired lateral alignment of the rail testing device with the rail (18).
Inventors:
HAVIRA ROBERT MARK
BAKACH JOSEPH S JR
BAKACH JOSEPH S JR
Application Number:
PCT/US2001/000390
Publication Date:
January 17, 2002
Filing Date:
January 05, 2001
Export Citation:
Assignee:
HARSCO CORP (US)
International Classes:
B61K9/10; G01B17/00; G01N29/22; G01N29/24; (IPC1-7): G01N29/04; G01N29/10
Foreign References:
| US2628335A | 1953-02-10 | |||
| US4235112A | 1980-11-25 | |||
| US5020371A | 1991-06-04 | |||
| US5161413A | 1992-11-10 | |||
| US5339692A | 1994-08-23 | |||
| US5419196A | 1995-05-30 |
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