Patents by Inventor Adam L. Steffes

Adam L. Steffes 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 converter lockup control
    Patent number: 10183671
    Abstract: A system for managing a lockup clutch in an off-road truck includes an engine, a transmission and a torque converter coupled between the engine and the transmission. The torque converter has a lockup clutch that when engaged directly couples the engine to the transmission. The system also includes a transmission controller that disengages the lockup clutch responsive to sensing a missed shift in the transmission, and subsequent to sensing a completed shift, sets an engine speed limit corresponding to a gear associated with the completed shift, and reengages the lockup clutch.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: January 22, 2019
    Assignee: Caterpillar Inc.
    Inventors: Adam L. Steffes, Raymond E. Durbin, Arthur Melvin Morris, Mark E. Hull, Matthew A. Johnson, Jeffrey Hynes
  • Torque Converter Lockup Control
    Publication number: 20180015924
    Abstract: A system for managing a lockup clutch in an off-road truck includes an engine, a transmission and a torque converter coupled between the engine and the transmission. The torque converter has a lockup clutch that when engaged directly couples the engine to the transmission. The system also includes a transmission controller that disengages the lockup clutch responsive to sensing a missed shift in the transmission, and subsequent to sensing a completed shift, sets an engine speed limit corresponding to a gear associated with the completed shift, and reengages the lockup clutch.
    Type: Application
    Filed: July 18, 2016
    Publication date: January 18, 2018
    Applicant: Caterpillar Inc.
    Inventors: Adam L. Steffes, Raymond E. Durbin, Arthur Melvin Morris, Mark E. Hull, Matthew A. Johnson, Jeffrey Hynes