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:
May. 16, 1978
Filed:
Oct. 12, 1976
Applicant:
Inventors:
Hans Gunther Heine, Little Silver, NJ (US);
Otto Hochstrasser, North Brunswick, NJ (US);
Assignee:
Brown Boveri Corporation, North Brunswick, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219 / ; 13 25 ; 13 26 ; 219 1075 ; 219421 ; 219426 ; 219437 ; 219438 ; 219523 ; 266240 ;
Abstract
A preheating arrangement for bringing foundry ladles up to temperature is described. The arrangement comprises a slotted elongated graphite rod extending down from a ladle cover, a pair of clamp and contact elements extending through the cover and a transformer above the cover with a shell around the transformer forming a single turn secondary winding connected directly to the clamp and contact elements. A graphite element is coated to protect it from corrosive atmospheres by heating it, while buried in sand, to the fusing temperature of the sand and then allowing it to cool.