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:
Apr. 14, 1998
Filed:
Nov. 20, 1996
Applicant:
Inventors:
Tamotsu Hasegawa, Nagoya, JP;
Norihiro Amano, Toyota, JP;
Katsuhito Yamada, Nagoya, JP;
Masuji Oshima, Kariya, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219494 ; 219497 ; 219425 ; 219505 ; 373154 ; 373148 ;
Abstract
In an electric furnace including a heating device which includes a cooling water passage for cooling the heating device to prevent the heating device from melting, estimation of a molten metal temperature in the electric furnace using a heat equilibrium model is conducted taking into account a thermal loss by the cooling water, i.e., the amount of a heat taken away by the cooling water. Further, the amount of the cooling water flowing through the heating device is adjusted so that the thermal loss by the cooling water is in a predetermined optimum thermal loss range.