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:
Oct. 21, 2014
Filed:
Dec. 22, 2010
Applicants:
Joseph C. Kopchick, Warren, MI (US);
Qigui Wang, Rochester Hills, MI (US);
Inventors:
Joseph C. Kopchick, Warren, MI (US);
Qigui Wang, Rochester Hills, MI (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22D 19/00 (2006.01); B23P 15/10 (2006.01); F02F 3/22 (2006.01);
U.S. Cl.
CPC ...
F02F 3/22 (2013.01); B22D 19/0072 (2013.01);
Abstract
A method of making an aluminum piston is described. In one embodiment, the method includes placing a oil gallery core in a mold, the oil gallery core comprising a metal tube connected to a hollow inlet tube and a hollow outlet tube; introducing liquid aluminum into the mold around the oil gallery core; and allowing the liquid aluminum to solidify, the oil gallery core forming a channel in the piston. Aluminum pistons are also described.