Michael G O'Leary

US Patent:

6974401, Dec 13, 2005

Filed:

Jul 31, 2003

Appl. No.:

10/631145

Inventors:

Michael Francis O'Leary - Brighton MI, US
David Allen Gilbert - Royal Oak MI, US
Jeffrey S. Rayce - Royal Oak MI, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16H057/08
B60K041/26

US Classification:

475347, 475331, 192218

Abstract:

A planetary gear arrangement having at least three rotatable members with intermeshing gears and a primary torque path defined therein. At least one active friction damper is disposed between two of the planetary gear members, for example, a sun gear and a ring gear. The active damper is selectively operable to apply frictional engagement between the two members with which it is interconnected to establish a controlled secondary torque path therebetween. The active damper is effective to reduce gear lash changes between the gear members of a planetary assembly.

US Patent:

20070068302, Mar 29, 2007

Filed:

Aug 23, 2005

Appl. No.:

11/209605

Inventors:

Michael O'Leary - Howell MI, US
David Gilbert - Royal Oak MI, US
Jeffrey Rayce - Royal Oak MI, US

International Classification:

F16H 55/14

US Classification:

074443000, 074409000

Abstract:

The present invention provides a hydraulic active damping system to damp gears, thereby reducing the occurrence of gear rattle or noise. The active nature of the present invention will allow the drag within the bearing to which the gear mounts to be selectively increased, by pressurizing an enclosed or specialized bearing with fluid during critical events. The pressure within the specialized bearing is subsequently decreased, thereby only increasing the system drag at critical operating conditions. The present invention also provides a method of damping gears by introducing pressurized fluid into a specialized bearing and subsequently reducing the fluid pressure therein.

US Patent:

20070125609, Jun 7, 2007

Filed:

Dec 7, 2005

Appl. No.:

11/296694

Inventors:

Michael O'Leary - Howell MI, US
Jeffrey Rayce - Royal Oak MI, US
David Gilbert - Royal Oak MI, US

International Classification:

F16F 9/53

US Classification:

188267100

Abstract:

The present invention provides a damping apparatus and/or method for a rotatable shaft. The damping apparatus includes a damper housing disposed about a portion of the rotatable shaft. A variable viscosity fluid, such as a magneto-rheological fluid, is disposed within the damper housing and in contact with the rotatable shaft. A control device is operatively connected with respect to the variable viscosity fluid. The control device is configured or operable to control the viscosity of the variable viscosity fluid and correspondingly control the amount of rotational resistance applied to the rotatable shaft.

US Patent:

20090114492, May 7, 2009

Filed:

May 6, 2008

Appl. No.:

12/115778

Inventors:

Michael F. O'Leary - Howell MI, US
Michael L. Langford - Fenton MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - Detroit MI

International Classification:

F16F 7/10

US Classification:

188378

Abstract:

A vehicle driveline includes a hybrid transmission, having a mass damper that provides noise and vibration damping over a broad range of frequencies. The damper provides damping at a desired frequency and all greater frequencies to act as a low pass filter for noise and vibration. A specific mass and inertia for the damper are selected to target the desired frequency range. Due to the hybrid design of the transmission the energy that is used to rotate the damper and provide the desired inertia is recovered by at least one motor/generator within the transmission during deceleration of the vehicle.

US Patent:

20150048937, Feb 19, 2015

Filed:

Aug 15, 2013

Appl. No.:

13/968211

Inventors:

- Detroit MI, US
MICHAEL F. O'LEARY - HOWELL MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B60Q 9/00

US Classification:

340457

Abstract:

A method of issuing a notice that a vehicle engine has accidentally been left running starts by determining the engine is running The method then determines if the vehicle has moved more than a set distance in a set time. If the engine remains running for set period of time while the vehicle has not moved more than a set distance, the notice is issued.