Joel M Maguire

6827664, Dec 7, 2004

Nov 15, 2002

10/295120

Paul D. Stevenson - Ann Arbor MI
James B. Borgerson - Ann Arbor MI
Joel M. Maguire - Northville MI
Kent H. Kienzle - Ann Arbor MI
Donald L. Dusenberry - Farmington Hills MI
Jeffrey J. Biallas - Dexter MI
Clinton E. Carey - Monroe MI

General Motors Corporation - Detroit MI

F16H 362

475275, 475276, 475278, 475281, 475292

A powertrain includes a power transmission having an input shaft continuously connected directly between an engine and a planetary gear member of a first planetary gearset. Another member of the planetary gearset is selectively grounded by a torque transmitting mechanism to establish a reaction member during the launch of a vehicle incorporating the powertrain. The reaction member is established during both the lowest forward drive ratio and the reverse drive ratio. A third member of the planetary gearset transmits the torque from the input shaft, as modified by the planetary gearset, to other planetary gearsets in down stream power flow arrangement with the first planetary gearset.

7029417, Apr 18, 2006

Jun 21, 2004

10/872726

James B. Borgerson - Ann Arbor MI, US
Joel M. Maguire - Northville MI, US
Kent H. Kienzle - Ann Arbor MI, US

General Motors Corporation - Detroit MI

F16H 3/44

475284, 475275, 475280, 475313, 475319, 475323, 475325, 475338, 475340

A powertrain includes a power transmission having an input shaft connectable with an engine and a planetary gear unit. The gear unit includes two planes of gears drivingly coupled to one another. A single carrier rotatably supports pinion gears from each plane of gears. A long ring engages the pinion gears from each plane of gears.

7052430, May 30, 2006

Jun 7, 2004

10/862557

Paul D Stevenson - Ann Arbor MI, US
Scott H Wittkopp - Ypsilanti MI, US
Richard A Winship - Westland MI, US
James B. Borgerson - Ann Arbor MI, US
Joel M. Maguire - Northville MI, US
Kent H. Kienzle - Ann Arbor MI, US
Donald L. Dusenberry - Farmington Hills MI, US
Jeffrey J. Biallas - Dexter MI, US
Clinton E. Carey - Monroe MI, US

General Motors Corporation - Detroit MI

F16H 3/62

475278, 475281, 475285, 475289, 475292, 192 12 B, 192 484, 192 486, 192 4892

A powertrain includes a power transmission having an input shaft continuously connected directly between an engine and a planetary gear member of a first planetary gearset. Another member of the planetary gearset is selectively grounded by a torque transmitting mechanism to establish a reaction member during the launch of a vehicle incorporating the powertrain. The reaction member is established during both the lowest forward drive ratio and the reverse drive ratio. A third member of the planetary gearset transmits the torque from the input shaft, as modified by the planetary gearset, to other planetary gearsets in down stream power flow arrangement with the first planetary gearset.

7112156, Sep 26, 2006

Feb 25, 2004

10/786638

Joel M. Maguire - Northville MI, US

General Motors Corporation - Detroit MI

F16H 31/00

475145, 475127, 475138, 475146

A transmission includes a plurality of fluid passages configured to transmit fluid through the transmission for operating the transmission. A miniature electric motor is operatively connected to a moveable blocker positioned in one of the passages for actuating movement of the blocker between an open position in which fluid is allowed to flow through the passage, and a closed position in which the passage is blocked.

7163095, Jan 16, 2007

Sep 28, 2004

10/952022

James A. Springer - Ann Arbor MI, US
Robert S. Samanich - Brighton MI, US
Raymond J. Haka - Brighton MI, US
Joel M. Maguire - Northville MI, US
Peter E. Devlin - Ann Arbor MI, US

General Motors Corporation - Detroit MI

F16D 25/0638
F16D 13/74
F16F 15/10

192 7012, 192 30 V, 19211334

A clutch assembly includes a hub with a hub friction surface and an inner surface that cooperate to define a cavity. A damper member is situated within the cavity and is in contact with the hub friction surface. The damper member is rotatable with respect to the hub so that relative movement between the damper ring and the hub friction surface results in energy absorption and dissipation to minimize unwanted clutch vibration. The damper ring is located inside the clutch hub so that it does not adversely affect transmission packaging. The clutch assembly preferably includes a member configured to direct lubricant along an inner diameter of the damper member so that it subsequently flows between the damper ring and the hub friction surface and through holes in the hub to lubricate clutch plates.

7235037, Jun 26, 2007

Mar 10, 2005

11/076724

Shushan Bai - Ann Arbor MI, US
Donald L. Dusenberry - Farmington Hills MI, US
Joel M. Maguire - Northville MI, US
Andrew W. Phillips - Saline MI, US

GM Global Technology Operations, Inc. - Detroit MI

B60W 10/02

477180

A launch control system for a vehicle having an engine includes a clutch that selectively enables torque transfer from the engine. A control module determines a launch torque based on a throttle position and an engine speed to achieve a target engine stall speed. The control module determines a clutch torque based on the launch torque and that regulates engagement of the clutch based on the clutch torque.

7308977, Dec 18, 2007

May 25, 2005

11/137824

Joel M. Maguire - Northville MI, US
Paul D. Stevenson - Ann Arbor MI, US
Paula J. Armstrong - Canton MI, US

GM Global Technology Operations, Inc. - Detroit MI

F16D 25/0638
F16D 13/72

192 85AA, 192 7012, 19211335

A clutch assembly for a transmission having a pressurized fluid source includes selectively engageable clutch plates including an apply plate. A piston is movable between an apply position and a release position to respectively engage or release the clutch plates. An apply plate cover cooperates with the apply plate to at least partially form an annular cavity that is sealed to contain pressurized fluid provided by the pressurized fluid source when the piston is moved to the apply position, thereby allowing pressurized fluid flow radially inward across the engaged clutch plates. The annular cavity is opened to allow fluid to empty therefrom when the piston is moved to the released position, thereby allowing centrifugally pumped fluid to flow radially outward across the released clutch plates. A method of reversing cooling fluid flow across clutch plates is also provided.

7322456, Jan 29, 2008

Sep 29, 2005

11/238727

Paul D. Stevenson - Ann Arbor MI, US
Joel M. Maguire - Northville MI, US

GM Global Technology Operations, Inc. - Detroit MI

F16D 47/00
F16D 13/48
F16D 23/14

192 4891, 74330, 192 488, 192 98

A radially stacked dual dry clutch apparatus for a dual clutch transmission is provided. The apparatus includes a housing, an outer clutch mounted to the housing, and an inner clutch mounted to the housing. The outer clutch includes a first plurality of engageable clutch plates, and a hub attached to one of the first plurality of clutch plates. The hub preferably defines a plurality of access ports. The inner clutch includes a second plurality of engageable clutch plates. The inner clutch also includes an apply member configured to selectively actuate the second plurality of clutch plates. At least a portion of the apply member is adapted to pass through the access ports of the hub.