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:
Jul. 10, 1979
Filed:
Dec. 27, 1977
Susumu Ihara, Osaka, JP;
Hiroyuki Yoshimoto, Osaka, JP;
Katsumi Mizuuchi, Osaka, JP;
Hideo Nishiumi, Kawasaki, JP;
Takanobu Suzuki, Kawasaki, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A method and an apparatus for detecting the internal cavities in a continuous casting bar in which two opposite surfaces of a casting bar delivered from a continuous casting machine are held between a pair of rollers each having a hollow portion and are pressurized at a predetermined pressure thereby, and an amount of transmission of an ultrasonic wave having a predetermined frequency passing through the casting bar is detected by means of an ultrasonic wave device for transmission and an ultrasonic wave device for reception which are provided respectively in the hollow portions of the rollers to allow the ultrasonic wave to pass through the casting bar running through the rollers, thereby to detect the internal cavities in the casting bar.