Patents by Inventor CATRINA SWAN

CATRINA SWAN 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).

  • Patent number: 8801571
    Abstract: A machine powertrain includes an engine operably connected to a torque converter and a transmission. A switch associated with the torque converter provides a locking signal indicative of a locked or unlocked condition of the torque converter. A throttle sensor associated with the throttle provides a throttle signal. An electronic controller receives the locking signal and the throttle signal, and controls operation of the engine at least partially based on the throttle signal and the locking signal. The electronic controller determines whether a locked or unlocked condition of the torque converter is present based on the locking signal, determines whether a part throttle operating condition or a full throttle operating condition is present based on the throttle signal, and selects a load-control power curve when the part throttle operating condition is present and when the torque converter switches from the unlocked to the locked condition.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: August 12, 2014
    Assignee: Caterpillar Inc.
    Inventors: Sairam Velamakanni, Aaron Ho, Catrina Swan, Warren Pepper, Douglas Carlson
  • Patent number: 8500599
    Abstract: A machine powertrain includes an engine operably connected to a torque converter and a transmission. A switch associated with the torque converter provides a locking signal indicative of a locked or unlocked condition of the torque converter. A throttle sensor associated with the throttle provides a throttle signal. An electronic controller receives the locking signal and the throttle signal, and controls operation of the engine at least partially based on the throttle signal and the locking signal. The electronic controller determines whether a locked or unlocked condition of the torque converter is present based on the locking signal, determines whether a part throttle operating condition or a full throttle operating condition is present based on the throttle signal, and selects a derated power curve when the part throttle operating condition is present and when the torque converter switches from the unlocked to the locked condition.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: August 6, 2013
    Assignee: Caterpillar Inc.
    Inventors: Aaron Ho, Catrina Swan, Warren Pepper, Douglas Carlson, Sairam Velamakanni
  • Publication number: 20130137548
    Abstract: A machine powertrain includes an engine operably connected to a torque converter and a transmission. A switch associated with the torque converter provides a locking signal indicative of a locked or unlocked condition of the torque converter. A throttle sensor associated with the throttle provides a throttle signal. An electronic controller receives the locking signal and the throttle signal, and controls operation of the engine at least partially based on the throttle signal and the locking signal. The electronic controller determines whether a locked or unlocked condition of the torque converter is present based on the locking signal, determines whether a part throttle operating condition or a full throttle operating condition is present based on the throttle signal, and selects a load-control power curve when the part throttle operating condition is present and when the torque converter switches from the unlocked to the locked condition.
    Type: Application
    Filed: November 28, 2011
    Publication date: May 30, 2013
    Applicant: CATERPILLAR INC.
    Inventors: Sairam Velamakanni, Aaron Ho, Catrina Swan, Warren Pepper, Douglas Carlson
  • Publication number: 20130137547
    Abstract: A machine powertrain includes an engine operably connected to a torque converter and a transmission. A switch associated with the torque converter provides a locking signal indicative of a locked or unlocked condition of the torque converter. A throttle sensor associated with the throttle provides a throttle signal. An electronic controller receives the locking signal and the throttle signal, and controls operation of the engine at least partially based on the throttle signal and the locking signal. The electronic controller determines whether a locked or unlocked condition of the torque converter is present based on the locking signal, determines whether a part throttle operating condition or a full throttle operating condition is present based on the throttle signal, and selects a derated power curve when the part throttle operating condition is present and when the torque converter switches from the unlocked to the locked condition.
    Type: Application
    Filed: November 28, 2011
    Publication date: May 30, 2013
    Applicant: CATERPILLAR INC.
    Inventors: AARON HO, CATRINA SWAN, WARREN PEPPER, DOUGLAS CARLSON, SAIRAM VELAMAKANNI