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:
Jan. 21, 2003
Filed:
Mar. 13, 2001
Applicant:
Inventors:
C. Edward Eckert, New Kensington, PA (US);
Howard L. Roenigk, Cabot, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C 7/00 ;
U.S. Cl.
CPC ...
C21C 7/00 ;
Abstract
A shaft for use with molten aluminum using an impeller mounted on the shaft comprising a protective refractory sleeve resistant to attack by molten aluminum, the protective sleeve employing a reinforcing media and mounted on the shaft to extend above and below the molten aluminum surface when the shaft is in use.