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:
Jan. 19, 1993
Filed:
Dec. 30, 1991
Yoshihiko Tarumi, Tokyo, JP;
Atuhisa Takekoshi, Tokyo, JP;
Mamoru Inaba, Tokyo, JP;
Yoshiro Nishi, Tokyo, JP;
Masaaki Sakurai, Tokyo, JP;
Satoshi Sakamoto, Takasago, JP;
Kimihiko Sato, Tokyo, JP;
Asahi Glass Company Ltd., Tokyo, JP;
NKK Corporation, Tokyo, JP;
Abstract
A radiation thermometer for measurement of the temperature of molten iron includes a probe tube with a sealed bottom in the form of a spheroidal shape and is made of zirconium boride ceramics. The probe tube is immersed in molten iron and radiation emitted from the spheroidal closed end of the probe tube is received by a sensor at the far end of the tube which is above the level of the molten iron. The spheroidal end of the probe tube is below the surface of molten iron by more than 10 times the inner radius of the probe tube.