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:
May. 26, 1992
Filed:
May. 03, 1990
Applicant:
Inventors:
Roy Widdowson, Marske, Redcar, OH (US);
Alan Scholes, Nunthorpe, OH (US);
Assignee:
British Steel plc, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
266225 ; 266226 ; 266236 ; 266237 ; 222592 ; 222597 ; 164489 ;
Abstract
Apparatus for constraining the flow of molten metal from a tundish to a mould along the inner periphery of a tube mounted between them. A vertically movable stopper rod is seated at its lower end in a nozzle at the entrance to the tube the end being so designed as to cause an annular discharge of metal into the tube upon the stopper rod lifting from its seating, gas being injected through the stopper whereby to generate a gaseous void within the interior of the tube to promote the maintenance of the metal flow path of along the length of the inner periphery of the tube.