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, 1992
Filed:
Dec. 16, 1991
Applicant:
Inventors:
Carlos E Aguirre, Downingtown, PA (US);
Howard R Harker, Malvern, PA (US);
Assignee:
Axel Johnson Metals, Inc., Lionville, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75 1019 ; 75640 ; 75645 ; 266168 ;
Abstract
In the particular embodiments described in the specification, a vacuum furnace includes a hearth having a melting region and a refining region and a particulate metal supply tube for conveying particulate metal to one side of the melting region. Three water-cooled shield members surround the other sides of the melting region so that metal ejected from the particulate metal deposited in the melting region by explosive vaporization of inclusions in the metal is intercepted by the shield members.