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:
Oct. 20, 1992
Filed:
May. 20, 1991
Applicant:
Inventor:
Steven C Evans, Ogden, UT (US);
Assignee:
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22F / ; C22C / ;
U.S. Cl.
CPC ...
148538 ; 148565 ; 164494 ; 164495 ;
Abstract
Zirconium or hafnium tubeshells, billets and channel sheets are produced by plasma arc melting the metal to form a liquid metal pool. The pool is poured into a mold to form a near net shape. The near net shape is reduced to final size while maintaining the metal temperature below the alpha-beta transition temperature throughout the size reducing step.