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. 31, 2007
Filed:
Feb. 24, 2006
Jeff Ballyns, Oswego, NY (US);
Don Doutre, Kingston, CA;
Kevin Gatenby, Kingston, CA;
Eric Lees, Harrowsmith, CA;
Edward S. Luce, Kingston, CA;
Peter Wales, Kingston, CA;
Gijsbertus Langelaan, Kingston, CA;
Jeff Ballyns, Oswego, NY (US);
Don Doutre, Kingston, CA;
Kevin Gatenby, Kingston, CA;
Eric Lees, Harrowsmith, CA;
Edward S. Luce, Kingston, CA;
Peter Wales, Kingston, CA;
Gijsbertus Langelaan, Kingston, CA;
Novelis Inc., Toronto, Ontario, CA;
Abstract
A method of producing a clad metal ingot suitable for rolling to form a clad metal sheet, and the clad metal ingot so produced. The method involves providing a solid core ingot having an upper side with a rolling face thereon having cavities extending inwardly into the ingot from the rolling face. All or all-but-one of the cavities are blocked against molten metal entry and casting cores extending outwardly from the rolling surface are provided in alignment with the cavities. Molten cladding metal is cast on the rolling face around the casting cores to produce a composite ingot and the casting cores are removed to produce voids in the cladding layer, and the cavities are unblocked. The resulting interconnected cavities and voids are filled with a molten metal to form cast-in-place metal lugs keying or pinning the cladding layer to the core ingot.