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:
Oct. 30, 1979
Filed:
Apr. 04, 1978
Tohru Iuchi, Kawasaki, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
A black body furnace and a radiation thermometer are spaced from each other in the direction of the surface of a heated material the temperature and emissivity of which is to be measured so as to be in a specular, or mirror-like, symmetry to a line normal to the heated material and the wavelength band of the detector of the radiation thermometer is selected such that the surface of the material shows specular, or mirror-like, reflection characteristics. The radiation energy emitted from the black body furnace is changed and the outputs of the radiation thermometer responding to the change are processed whereby the emissivity and surface temperature of the material are obtained. The use of this invention makes it possible to measure accurately the temperature of the material without any disturbance, even if the emissivity of the material is changed in the course of the measurement.