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. 19, 1983
Filed:
Oct. 29, 1981
Applicant:
Inventor:
Klas B Magnusson, Hallstahammar, SE;
Assignee:
Bulten-Kanthal Aktiebolag, Hallstahammar, SE;
Primary Examiner:
Int. Cl.
CPC ...
H05B / ; F27B / ;
U.S. Cl.
CPC ...
219523 ; 219421 ; 219422 ; 219426 ; 219537 ; 373128 ; 432224 ;
Abstract
A preheater for a casting ladle includes a stationary horizontal refractory deck having vertical apertures in which are disposed refractory plugs, each of which supports an electrical heating element that depends downwardly from the refractory deck. A lifting table is movable into registration with the set of depending electrical heating elements and is also adapted to support the casting ladle thereon and to raise it into surrounding relation with the electric heating elements that depend from the refractory deck. Individual defective heating elements can be removed and replaced during operation of other operative heating elements.