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. 12, 1989
Filed:
Nov. 08, 1988
Applicant:
Inventors:
Donald B Hoffman, Florissant, MO (US);
Joseph J Linhart, Granite City, IL (US);
Raymond C Stoces, Glen Carbon, IL (US);
Assignee:
National Steel Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
266246 ; 266275 ; 266280 ;
Abstract
A metallurgical ladle including a steel shell and refractory brick lining includes a refractory brick retaining ring formed in segments from a ceramic material, with the segments being releasably secured to the inner surface of the steel shell and overlying the lining brick. The ceramic material preferably is reinforced with metal fiber and preferably has a top surface extending above the open top of the steel shell.