Patents by Inventor William James Tate

William James Tate 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).

  • Creep control for motor system
    Patent number: 7988593
    Abstract: The control system may have an electric motor and a traction device connected to an output of the motor. The control system may also have a decelerator and a controller. The controller may be in communication with the motor and the decelerator. The controller may be configured to determine a creep torque and apply the creep torque to the traction device when the decelerator is actuated.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: August 2, 2011
    Assignee: Caterpillar Inc.
    Inventors: Michael David Staub, William James Tate, Cameron T. Lane, Frederick Gaylord Beach, Douglas J. Lockhart
  • Conduction angle control of a switched reluctance generator
    Patent number: 7755308
    Abstract: A control system is disclosed. The control system has a switched reluctance generator coupled to provide electrical power through a DC bus to a motor. The control system also has a controller in communication with the switched reluctance generator, the motor, and the DC bus. The controller is configured to receive an indication of an amount torque or power required by the motor, determine a conduction angle of the switched reluctance generator based on the amount of torque or power required by the motor; and energize the DC bus with the electrical power provided by the switched reluctance generator based on the optimal conduction angle.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: July 13, 2010
    Assignee: Caterpillar Inc
    Inventors: Ekrem Kayikci, William James Tate
  • Creep control for motor system
    Publication number: 20090203496
    Abstract: A control system is disclosed. The control system may have an electric motor and a traction device connected to an output of the motor. The control system may also have a decelerator and a controller. The controller may be in communication with the motor and the decelerator. The controller may be configured to determine a creep torque and apply the creep torque to the traction device when the decelerator is actuated.
    Type: Application
    Filed: February 11, 2008
    Publication date: August 13, 2009
    Inventors: Michael David Staub, William James Tate, Cameron T. Lane, Frederick Gaylord Beach, Douglas J. Lockhart
  • Conduction angle control of a switched reluctance generator
    Publication number: 20090001911
    Abstract: A control system is disclosed. The control system has a switched reluctance generator coupled to provide electrical power through a DC bus to a motor. The control system also has a controller in communication with the switched reluctance generator, the motor, and the DC bus. The controller is configured to receive an indication of an amount torque or power required by the motor, determine a conduction angle of the switched reluctance generator based on the amount of torque or power required by the motor; and energize the DC bus with the electrical power provided by the switched reluctance generator based on the optimal conduction angle.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 1, 2009
    Inventors: Ekrem Kayikci, William James Tate
  • Electric drivetrain thermal protection system
    Patent number: 7443122
    Abstract: An electric drivetrain for a mobile machine is disclosed. The electric drivetrain has at least one power consuming device, a sensor associated with the at least one power consuming device, and a controller in communication with the power consuming device and the sensor. The sensor is configured to generate a signal indicative of a temperature of the power consuming device. The controller is configured to limit a power consumption level of the at least one power consuming device to an amount corresponding to a value of the signal.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: October 28, 2008
    Assignee: Caterpillar Inc.
    Inventors: William James Tate, Robert Paul Bertsch, Bruce H. Hein, Thuong Dao Anh Le
  • Electric drivetrain thermal protection system
    Publication number: 20080001564
    Abstract: An electric drivetrain for a mobile machine is disclosed. The electric drivetrain has at least one power consuming device, a sensor associated with the at least one power consuming device, and a controller in communication with the power consuming device and the sensor. The sensor is configured to generate a signal indicative of a temperature of the power consuming device. The controller is configured to limit a power consumption level of the at least one power consuming device to an amount corresponding to a value of the signal.
    Type: Application
    Filed: June 28, 2006
    Publication date: January 3, 2008
    Inventors: William James Tate, Robert Paul Bertsch, Bruce H. Hein, Thuong Dao Anh Le