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. 19, 2006
Filed:
Aug. 03, 2005
Applicant:
David D. Goettsch, Shelby Township, MI (US);
Inventor:
David D. Goettsch, Shelby Township, MI (US);
Assignee:
GM Global Technology Operations, Inc., Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22C 9/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus is disclosed for forming a metal casting sprue for a lost foam casting process, the sprue formed in sand for receiving molten metal and directing the molten metal to a foam pattern in a mold cavity, wherein the sprue formation is facilitated by an insert having a plurality of apertures formed therein, the apertures facilitating an application of a coating to sand surrounding the insert prior to removal of the insert from the sand, and wherein the sprue facilitates a minimization of production costs and an optimization of material properties of the resultant casting.