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.

Date of Patent:
Dec. 15, 1992

Filed:

Dec. 12, 1990
Applicant:
Inventors:

Sudhir K Sharma, Stormville, NY (US);

Ronald J Selines, North Salem, NY (US);

Michael F Riley, Danbury, CT (US);

Alan R Barlow, Stamford, CT (US);

Allen H Chan, North Tarrytown, NY (US);

Paul J Schaffer, Peekskill, NY (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ; C22B / ;
U.S. Cl.
CPC ...
266 47 ; 266224 ; 266270 ; 2989014 ;
Abstract

A tuyere and method for discharging an agitating gas into the molten contents of an electrically heated furnace to reduce temperature and composition variations in its contents. The tuyere comprises a refractory plug and sleeve for installation into the refractory wall and shell of the furnace, and a dielectric section in the tuyere pipe outside the furnace shell to prevent electrical arcing and current flow into the gas supply piping and external supports.


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