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:
Dec. 08, 2015
Filed:
Jan. 21, 2014
GM Global Technology Operations Llc, Detroit, MI (US);
David D. Goettsch, Shelby Township, MI (US);
Brad A. Ohlrich, Bloomington, IN (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for delivering molten metal from a ladle to a die casting shot sleeve and a ladle and shot sleeve assembly. Both the ladle and a rotatable device coupled to the shot sleeve are made to rotate about respective axes as a way to reduce air entrainment and oxide film inclusions during the gravity filling of the shot sleeve with molten metal from the ladle. In a preferred form, the axis of rotation of the nozzle in the ladle is orthogonal to the axis of rotation of the shot sleeve rotatable device that is preferably placed in a horizontal filling direction. The nozzle is configured to deliver the molten metal through the lowest level of the shot sleeve when the ladle is rotated from a first position to a second position about its axis, followed by its rotation about a filling axis of the shot sleeve from a first angular position to a second angular position. At the second angular position, a die casting plunger can fill the casting cavity with the molten metal that has been delivered to the shot sleeve.