Patents by Inventor Todd W. Rooney

Todd W. Rooney has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Synchronizer having asymmetric blocker and sleeve teeth
    Patent number: 9777779
    Abstract: A synchronizer for a transmission of a motor vehicle is provided. The synchronizer includes a sleeve and a blocker ring. The sleeve includes sleeve spline teeth and advanced sleeve spline teeth. The blocker ring includes blocker spline teeth. The sleeve spline teeth and blocker spline teeth are each asymmetrical and have a blunt tip, a first angled side, and a second angled side. The first and second angled sides have different angular relationships to a longitudinal axis of the teeth.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: October 3, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: William L. Cousins, Kristopher Villegas, Todd W. Rooney
  • SYNCHRONIZER HAVING ASYMMETRIC BLOCKER AND SLEEVE TEETH
    Publication number: 20160273593
    Abstract: A synchronizer for a transmission of a motor vehicle is provided. The synchronizer includes a sleeve and a blocker ring. The sleeve includes sleeve spline teeth and advanced sleeve spline teeth. The blocker ring includes blocker spline teeth. The sleeve spline teeth and blocker spline teeth are each asymmetrical and have a blunt tip, a first angled side, and a second angled side. The first and second angled sides have different angular relationships to a longitudinal axis of the teeth.
    Type: Application
    Filed: February 1, 2016
    Publication date: September 22, 2016
    Inventors: William L. Cousins, Kristopher Villegas, Todd W. Rooney
  • Control system for electronic range selection in a dual clutch transmission and for a differential in a transmission
    Patent number: 8771120
    Abstract: The present invention provides a system for shifting or controlling a dual clutch transmission where the transmission may operate in at least a first mode of operation and a second mode of operation. The system includes a controller and a plurality of solenoids in fluid communication with a valve assembly. Selective activation of the solenoids by the controller engages the valve assembly to provide the first mode and the second mode of operation.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: July 8, 2014
    Assignee: GM Global Technology Operations, LLC
    Inventors: Mark A. Vernacchia, Brian W. Whitmarsh, Joshua E. Lehrmann, Wayne B. Vogel, Todd W. Rooney
  • CONTROL SYSTEM FOR ELECTRONIC RANGE SELECTION IN A DUAL CLUTCH TRANSMISSION AND FOR A DIFFERENTIAL IN A TRANSMISSION
    Publication number: 20110146438
    Abstract: The present invention provides a system for shifting or controlling a dual clutch transmission where the transmission may operate in at least a first mode of operation and a second mode of operation. The system includes a controller and a plurality of solenoids in fluid communication with a valve assembly. Selective activation of the solenoids by the controller engages the valve assembly to provide the first mode and the second mode of operation.
    Type: Application
    Filed: February 18, 2011
    Publication date: June 23, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Mark A. Vernacchia, Brian W. Whitmarsh, Joshua E. Lehrmann, Wayne B. Vogel, Todd W. Rooney
  • Control system for electronic range selection in a dual clutch transmission
    Patent number: 7896775
    Abstract: The present invention provides a system for shifting or controlling a dual clutch transmission where the transmission may operate in at least a first mode of operation and a second mode of operation. The system includes a controller and a plurality of solenoids in fluid communication with a valve assembly. Selective activation of the solenoids by the controller engages the valve assembly to provide the first mode and the second mode of operation.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: March 1, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: Mark A. Vernacchia, Brian W. Whitmarsh, Joshua E. Lehrmann, Wayne B. Vogel, Todd W. Rooney
  • Control system for a differential in a transmission
    Patent number: 7828684
    Abstract: A control system for controlling an axle clutch between two half-axles in a motor vehicle is provided. The control system includes two solenoids and a pressure sensor in communication with a controller and a valve assembly. One of the solenoids provides a flow of fluid to engage the axle clutch. The valve assembly cooperates with another of the solenoids to disengage the axle clutch under certain conditions.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: November 9, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Brian W. Whitmarsh, Todd W. Rooney, Mark A. Vernacchia, Joshua E. Lehrmann, Wayne B. Vogel
  • Control system for a multi-speed transmission
    Patent number: 7752935
    Abstract: A hydraulic control circuit for a transmission includes a plurality of solenoids and valves in fluid communication with a plurality of actuators. The actuators are operable to actuate a plurality of torque transmitting devices. Selective activation of the solenoids allows for a pressurized fluid flow to activate at least one of the actuators in order to shift the transmission into a desired gear ratio.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: July 13, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Mark A. Vernacchia, Brian W. Whitmarsh, Joshua E. Lehrmann, Todd W. Rooney, Wayne B. Vogel
  • CONTROL SYSTEM FOR ELECTRONIC RANGE SELECTION IN A DUAL CLUTCH TRANSMISSION
    Publication number: 20080220939
    Abstract: The present invention provides a system for shifting or controlling a dual clutch transmission where the transmission may operate in at least a first mode of operation and a second mode of operation. The system includes a controller and a plurality of solenoids in fluid communication with a valve assembly. Selective activation of the solenoids by the controller engages the valve assembly to provide the first mode and the second mode of operation.
    Type: Application
    Filed: December 5, 2007
    Publication date: September 11, 2008
    Inventors: Mark A. Vernacchia, Brian W. Whitmarsh, Joshua E. Lehrmann, Wayne B. Vogel, Todd W. Rooney
  • CONTROL SYSTEM FOR A DIFFERENTIAL IN A TRANSMISSION
    Publication number: 20080220923
    Abstract: A control system for controlling an axle clutch between two half-axles in a motor vehicle is provided. The control system includes two solenoids and a pressure sensor in communication with a controller and a valve assembly. One of the solenoids provides a flow of fluid to engage the axle clutch. The valve assembly cooperates with another of the solenoids to disengage the axle clutch under certain conditions.
    Type: Application
    Filed: December 5, 2007
    Publication date: September 11, 2008
    Inventors: Brian W. Whitmarsh, Todd W. Rooney, Mark A. Vernacchia, Joshua E. Lehrmann, Wayne B. Vogel
  • CONTROL SYSTEM FOR A MULTI-SPEED TRANSMISSION
    Publication number: 20080216908
    Abstract: A hydraulic control circuit for a transmission includes a plurality of solenoids and valves in fluid communication with a plurality of actuators. The actuators are operable to actuate a plurality of torque transmitting devices. Selective activation of the solenoids allows for a pressurized fluid flow to activate at least one of the actuators in order to shift the transmission into a desired gear ratio.
    Type: Application
    Filed: February 12, 2008
    Publication date: September 11, 2008
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: MARK A. VERNACCHIA, Brian W. Whitmarsh, Joshua E. Lehrmann, Todd W. Rooney, Wayne B. Vogel