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:
Dec. 15, 1987
Filed:
Sep. 03, 1986
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
373 22 ;
Abstract
Apparatus for supplying thermal energy to a metal melt present in a receiving vessel after having been discharged from a melting furnace, the receiving vessel having a central axis, the apparatus includes at least two plasma torches disposed above the melt in the receiving vessel to direct a transferred electric arc at the melt, the torches being operated with alternating current and with a gas which is inert to the melt, while being cooled with water. Apparatus according to the invention includes a cover over the top of the vessel, the cover having a passage for the electrodes, and a component establishing a gas-tight seal between the cover and the electrodes.