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:
Sep. 16, 1980
Filed:
Nov. 15, 1977
Tsutomu Sakashita, Ibaragi, JP;
Isao Yamazaki, Ibaragi, JP;
Sumitomo Metal Industries Limited, Osaka, JP;
Abstract
A molten steel outflow automatically controlling device comprising an infrared ray camera for detecting infrared rays emitted by a molten steel stream and slag flowing down out of a molten steel vessel such as a ladle or converter, a color monitor for converting the infrared rays emitted by the molten steel and slag into video signals with such infrared ray camera and for developing monitor picture images by color-printing the signals in two kinds, a signal discriminating device for making the two kinds of color picture images discriminating signals by the ratio of areas and a nozzle closing device for closing a nozzle for the outflow of molten steel of the molten steel vessel by such discriminating signal as is mentioned above, whereby, when the remaining amount of the molten steel in the molten steel vessel becomes small, the outflow of the slag will be detected and the nozzle for the outflow of the molten steel will be automatically closed to stop the pouring and to prevent the slag from mixing into the molten steel.