Patents by Inventor Edmond Mc Collum Etchason

Edmond Mc Collum Etchason 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).

  • Torque and power control in a powertrain
    Patent number: 6511399
    Abstract: A powertrain having a controller for limiting the torque and power inputs to a transmission as determined by operating parameters and design features of the transmission. These parameters and design features include torque limits for various components in the transmission, torque ratio of the torque converter, the design K factor of the torque converter, gear ratios of the transmission, operating condition of the torque converter clutch, and input power limits for the transmission. A programmable digital computer includes a subroutine that evaluates and establishes torque limits and input speed limits from the design features and operating parameter. The controller sets the limits for each transmission ratio including reverse such that a family of transmission can be coupled to a single engine design without overpowering the transmission should the engine be capable of greater output power than the transmission can accept.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: January 28, 2003
    Assignee: General Motors Corporation
    Inventors: Edmond Mc Collum Etchason, John P Kresse, Gregory A Hubbard, Timothy Alan Robinson, Jeffrey Kurt Runde
  • Torque and power control in a powertrain
    Publication number: 20020183163
    Abstract: A powertrain having a controller for limiting the torque and power inputs to a transmission as determined by operating parameters and design features of the transmission. These parameters and design features include torque limits for various components in the transmission, torque ratio of the torque converter, the design K factor of the torque converter, gear ratios of the transmission, operating condition of the torque converter clutch, and input power limits for the transmission. A programmable digital computer includes a subroutine that evaluates and establishes torque limits and input speed limits from the design features and operating parameter. The controller sets the limits for each transmission ratio including reverse such that a family of transmission can be coupled to a single engine design without overpowering the transmission should the engine be capable of greater output power than the transmission can accept.
    Type: Application
    Filed: April 25, 2001
    Publication date: December 5, 2002
    Inventors: Edmond Mc Collum Etchason, John P. Kresse, Gregory A. Hubbard, Timothy Alan Robinson, Jeffrey Kurt Runde