The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 1999
Filed:
Jun. 30, 1997
Patrick Cook, Skiatook, OK (US);
Gas Research Institute, Chicago, IL (US);
Abstract
A detection and imaging system 10 is provided for locating defects in pipes using electromagnetic acoustical transducer (EMAT) sensors. The system includes an ultrasonic generator 22 (FIG. 2) configured to transmit a pulse signal to the EMAT transmitter 16 (FIG. 1). The transmitter 16, in turn, sends an ultrasonic wave through a pipe 13. The EMAT receiver 18 (FIG. 1) is configured to detect the transmitted ultrasonic signal 24 and receive a reflected ultrasonic signal that is reflected by a defect in the pipe. A processor is configured to generate a filter signal based upon the transmitted ultrasonic signal 24, to correlate the filter signal and the rejected ultrasonic signal to derive the location of the defect relative to the receiver, and to display the profile of the defect.