Patents by Inventor Steven W. O'Hara

Steven W. O'Hara 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).

  • Hydraulic clutch actuation system
    Patent number: 7201266
    Abstract: A torque transfer mechanism for controlling the magnitude of a clutch engagement force exerted on a clutch pack that is operably disposed between a first rotary member and a second rotary member includes a hydraulic clutch actuation system. The hydraulic clutch actuation system includes a primary fluid circuit coupled to a secondary fluid circuit by a pressure intensifier. The pressure intensifier provides magnified pressure to a piston for actuating the clutch pack.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: April 10, 2007
    Assignee: Magna Powertrain USA, Inc.
    Inventors: James S. Brissenden, Timothy M. Burns, Sankar K. Mohan, Eric A. Bansbach, Steven W. O'Hara
  • Hydraulic clutch actuation system
    Patent number: 7059462
    Abstract: A torque transfer mechanism for controlling the magnitude of a clutch engagement force exerted on a clutch pack that is operably disposed between a first rotary member and a second rotary member includes a hydraulic clutch actuation system. The hydraulic clutch actuation system includes a primary fluid circuit coupled to a secondary fluid circuit by a pressure intensifier. The pressure intensifier provides magnified pressure to a piston for actuating the clutch pack.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: June 13, 2006
    Assignee: Magna Powertrain, Inc.
    Inventors: James S. Brissenden, Timothy M. Burns, Sankar K. Mohan, Eric A. Bansbach, Steven W. O'Hara
  • Low power hydraulic clutch actuation systems
    Patent number: 7021445
    Abstract: A torque transfer mechanism for controlling the magnitude of a clutch engagement force exerted on a clutch pack that is operably disposed between a first rotary member and a second rotary member includes a hydraulic clutch actuation system. The hydraulic clutch actuation system includes an electric motor drivingly coupled to a pump. The pump supplies pressurized fluid to an accumulator. The pressurized fluid within the accumulator is selectively supplied to a piston to provide a clutch engagement force.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: April 4, 2006
    Assignee: Magna Powertrain, Inc.
    Inventors: James S. Brissenden, Sankar K. Mohan, Eric A. Bansbach, Timothy M. Burns, Steven W. O'Hara
  • Hydraulic clutch actuation system
    Patent number: 6997299
    Abstract: A torque transfer mechanism for controlling the magnitude of a clutch engagement force exerted on a clutch pack that is operably disposed between a first rotary member and a second rotary member includes a hydraulic clutch actuation system. The hydraulic clutch actuation system includes a primary fluid circuit coupled to a secondary fluid circuit by a pressure intensifier. The pressure intensifier provides magnified pressure to a piston for actuating the clutch pack.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: February 14, 2006
    Assignee: Magna Powertrain, Inc.
    Inventors: James S. Brissenden, Timothy M. Burns, Sankar K. Mohan, Eric A. Bansbach, Steven W. O'Hara