Mark S Osborne

US Patent:

7761263, Jul 20, 2010

Filed:

Jun 1, 2005

Appl. No.:

11/142546

Inventors:

Qigui Wang - Rochester Hills MI, US
Peggy E. Jones - Saginaw MI, US
Mark A. Osborne - Midland MI, US
Wenying Yang - Windsor, CA

Assignee:

GM Global Technology Operations, Inc. - Detroit MI

International Classification:

G06F 17/50

US Classification:

703 1, 703 6

Abstract:

A casting design system () is provided which comprises (a) a database () which contains casting design data and rules, (b) a user interface (), in communication with the database, which accepts as input a product design () that is to be cast by a casting process, and (c) an inference engine () which is adapted to generate casting designs () from the input product design by searching the database and retrieving data therefrom.

US Patent:

8312914, Nov 20, 2012

Filed:

May 24, 2010

Appl. No.:

12/785796

Inventors:

Michael J. Walker - Windsor, CA
Anil K. Sachdev - Rochester Hills MI, US
Thomas A. Perry - Bruce Township MI, US
Mark A. Osborne - Grand Blanc MI, US
Paul Boone - Rochester Hills MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B22D 19/00
B22D 19/04

US Classification:

164333, 164334, 164109

Abstract:

A mold for forming a plurality of rotors includes a plurality of lamination stacks, wherein each lamination stack defines at least one void therethrough; a tube having a central longitudinal axis, wherein each lamination stack is concentrically spaced apart from the tube to define a channel therebetween; a plurality of washers each having a shape defined by a first diameter and a second diameter that is greater than the first diameter, wherein each washer is configured to concentrically abut the tube and define a feed conduit interconnecting with the channel; and a shell disposed in contact with each lamination stack and concentrically spaced apart from each washer to define a plurality of ducts, wherein each duct is interconnected with the at least one void of at least one lamination stack. A mold system and a method of forming a plurality of rotors are also described.

US Patent:

8403026, Mar 26, 2013

Filed:

Mar 24, 2009

Appl. No.:

12/409726

Inventors:

Mark A. Osborne - Grand Blanc MI, US
Barry L. Priem - Saginaw MI, US
Dale A. Gerard - Bloomfield Hills MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B22D 19/00
B22D 19/16
B22D 27/04

US Classification:

164103, 164109, 164493, 164119, 164138

Abstract:

A rotor for an induction motor and a method of preparing same. The method includes making a squirrel-cage rotor made up of a cage and a laminate stack by forming a mold around the stack, heating the stack and introducing a molten metal into the mold such that the molten metal substantially fills a space defined in the stack that corresponds to the cage. In one form, the space includes slots or related channels formed in the stack that upon filling with the molten metal become longitudinal bars that form electric current loops with end rings of the cage. By heating the stack and maintaining it at a temperature high enough to keep the molten metal in a substantially molten state at least long enough for it to flow through the slots of the stack, premature freezing of the molten metal is avoided. In addition, by providing low pressure to the molten metal in conjunction with the elevated temperature in the stack, flow is promoted to ensure a substantially porosity-free, fully dense squirrel-cage for the rotor.

US Patent:

20090317653, Dec 24, 2009

Filed:

Jun 24, 2008

Appl. No.:

12/144740

Inventors:

Shekhar G. Wakade - Grand Blanc MI, US
Mark A. Osborne - Grand Blanc MI, US
William L. Miller - Birmingham MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - DETROIT MI

International Classification:

B22F 7/02
B22F 3/02

US Classification:

428548, 419 66, 419 6

Abstract:

One embodiment includes providing a first layer including a first powder material and a second layer including a second powder material over the first layer, and compacting the first powder material and the second powder material using at least a first magnetic field.

US Patent:

20110175484, Jul 21, 2011

Filed:

Jan 21, 2010

Appl. No.:

12/691217

Inventors:

Qigui Wang - Rochester Hills MI, US
Mark A. Osborne - Grand Blanc MI, US
Eugene C. Tuohy - Grand Blanc MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - Detroit MI

International Classification:

H02K 17/16
H02K 15/02

US Classification:

310211, 29598

Abstract:

Squirrel cage rotors of aluminum based material end rings joined with high conductive and durable material (such as copper) conductor bars for use in electric motors and methods of making them are described. The methods include forming conductor bars by casting or other metal forming methods in the slots of laminate steel stack, or positioning the preformed or premade solid conductor bars in the longitudinal slots of the stacked laminated steel, with bar ends extending out of the laminated steel stack ends, optionally coating the extended part of the conductors (bars) with a latent exoergic coating containing Al and one or more conductor bar chemical elements, positioning the laminated steel stack having conductors (bars) in a casting mold that forms the cavity of both end rings of the rotor, filling the end ring cavities with aluminum melt, and allowing the end rings to solidify under pressure. Alternatively, the conductor bars and end rings can be made separately and mechanically joined together.

US Patent:

20120085228, Apr 12, 2012

Filed:

May 19, 2011

Appl. No.:

13/110947

Inventors:

Joseph C. Kopchick - Warren MI, US
Mark A. Osborne - Grand Blanc MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

F16J 1/01
B22C 9/22

US Classification:

92172, 164 44

Abstract:

A diesel piston with a cast bi-metallic dome and a method of making the piston. In one form, the dome may include a laminate of a relatively high-temperature material, for example, stainless steel, and a relatively low temperature material, for example, aluminum or aluminum alloys, such that the portion of the dome made from the relatively high-temperature material is directly exposed to combustion within a cylinder into which the piston is placed. In another form, an aluminum coated stainless steel ring is used to form the dome. In one form, an ablation casting process may be used to manufacture the dome.

US Patent:

20120097354, Apr 26, 2012

Filed:

May 17, 2011

Appl. No.:

13/109033

Inventors:

Joseph C. Kopchick - Warren MI, US
Mark A. Osborne - Grand Blanc MI, US
Richard D. Ricchi - Lapeer MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

B22D 25/02
B22D 30/00
B22C 9/00

US Classification:

164 15

Abstract:

A diesel engine piston and a method of making the piston. The method involves casting the piston with complex geometries, including undercut features. The casting uses an aggregate disposable mold that can be removed from the as-cast part. In one form, the complex geometry includes an undercut combustion bowl formed in the piston dome, while in another, it may include an internal cooling passage. The undercut bowl and internal passages may be produced using the aggregate disposable mold.

US Patent:

20120180749, Jul 19, 2012

Filed:

Mar 26, 2012

Appl. No.:

13/429778

Inventors:

Joseph C. Kopchick - Warren MI, US
Mark A. Osborne - Grand Blanc MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

F02F 3/00
B22D 27/02
B22D 19/16

US Classification:

1231936, 164 98, 164 48

Abstract:

A piston with a cast bi-metallic dome feature and a method of making the piston. In one form, the piston is for use in a diesel engine, while in another, the piston is for use in a gasoline engine. The dome feature may include a laminate of a relatively high-temperature material (such as stainless steel) and a relatively low temperature material (such as aluminum or aluminum alloys) such that the portion of the dome made from the relatively high-temperature material is directly exposed to combustion within a cylinder into which the piston is placed. In another form, an aluminum coated stainless steel layer is used to form the dome. In one form, an ablation casting process may be used to manufacture the dome.