Jeremy Short

US Patent:

7644750, Jan 12, 2010

Filed:

Jun 27, 2006

Appl. No.:

11/475759

Inventors:

James G. Schroth - Troy MI, US
Michael D. Hanna - West Bloomfield MI, US
Richard H. Hammar - Utica MI, US
Omar S. Dessouki - Beverly Hills MI, US
Brent D. Lowe - Milford MI, US
Mark T. Riefe - Brighton MI, US
Jeremy W. Short - Berkley MI, US
Mark W. Verbrugge - Troy MI, US

Assignee:

GM Global Technology Operations, Inc. - Detroit MI

International Classification:

B22D 19/00
B22D 19/04

US Classification:

164100, 164 98

Abstract:

The invention provides a method for manufacturing a powertrain component enclosure member, including the steps of: (A) positioning at least one insert into a mold, wherein the insert is provided with a coating to prevent bonding between the insert and the casting material; and (B) casting a wall of the powertrain component enclosure member in the mold around the insert such that a major portion of the insert is substantially non-bonded with the casting material to provide a proper interfacial boundary with the casting material for damping.