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:
Jul. 17, 1990
Filed:
Nov. 23, 1988
Applicant:
Inventors:
Philip D Stelts, Center Valley, PA (US);
David W Kern, Slatedale, PA (US);
Kenneth J Fioravanti, Allentown, PA (US);
Assignees:
Bethlehem Steel Corporation, Bethlehem, PA (US);
Air Products & Chemicals, Inc., Allentown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
266270 ; 266225 ;
Abstract
An air cooled refractory covered injection lance for introducing reactive gases below the surface of a molten metal bath where the lance is provided with means to surround the reactive gas conduit with a high velocity cooling fluid to prevent thermal decomposition of the reactive gas prior to its injection into the molten metal bath.