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:
Nov. 15, 2011
Filed:
Oct. 06, 2008
David R. Gildemeister, Murrysville, PA (US);
James L. Kirby, Mechanicsville, VA (US);
Ray T. Richter, Murrysville, PA (US);
Charles W. Shanko, Summerville, SC (US);
David R. Gildemeister, Murrysville, PA (US);
James L. Kirby, Mechanicsville, VA (US);
Ray T. Richter, Murrysville, PA (US);
Charles W. Shanko, Summerville, SC (US);
Alcoa Inc., Pittsburgh, PA (US);
Abstract
In one embodiment, an apparatus for direct chill casting of metal includes an open ended mold cavity formed by a casting surface with an upper end and a lower end, a refractory sleeve located at the upper end of the mold cavity being adapted to receive molten metal, a coolant delivery system below the lower end of the mold for supplying coolant to chill the descending hot metal body, and a boron nitride ring mounted between the refractory sleeve and the peripheral wall of the mold cavity. Another embodiment further includes a downspout instead of a refractory sleeve that is located at the upper end of the mold cavity being adapted to receive molten metal having a flow control rod or a floating baffle where the flow control rod controls the amount of molten metal to enter the mold cavity.