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:
Aug. 28, 1984
Filed:
Oct. 19, 1981
Kubota, Ltd., Osaka, JP;
Osaka Gas Kabushiki Kaisha, Osaka, JP;
Abstract
A method of ultrasonic flaw detection of a pipe, worth particularly for instance for a heater pipe as is used for catalytic gas reforming with steam. A transmitter probe and a receiver probe are disposed on the pipe outer surface with suitable spacing one from the other both in axial or longitudinal direction and in peripheral direction of the pipe. The transmitter probe launches ultrasonic radiation under proper angle of incidence upon the pipe outer surface at the point of entering material of the pipe, to be refracted under a particular angle of refraction so that it may then pass through the material of the pipe straight to another point upon the pipe outer surface. The receiver probe receives the ultrasonic radiation transmission echo. Flaw in the material of the pipe is detected from fluctuation of the echo, as seen upon scanning the pipe surface by moving the transmitter and receiver probes.