Patents by Inventor Ryan L. Horihan

Ryan L. Horihan 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).

  • Drive line torque perturbation for PTO mode shifting
    Patent number: 7953535
    Abstract: A method of controlling a machine drive having a driveline PTO establishes a driveline torque perturbation via conversion of internal inertia through two transmission neutral conditions. In an example, when a request is received, e.g., from an operator, to shift the driveline PTO from a first mode to a second mode, the transmission is automatically modulated between its first neutral condition and its second neutral condition while the driveline PTO is shifted from the first mode to the second mode, thus minimizing torque lock and facilitating mode changes.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: May 31, 2011
    Assignee: Caterpillar Inc.
    Inventors: James W. Landes, Ryan L. Horihan, Kevin G. Meyer, Travis Edward Moore
  • DRIVE LINE TORQUE PERTURBATION FOR PTO MODE SHIFTING
    Publication number: 20090031699
    Abstract: A method of controlling a machine drive having a driveline PTO establishes a driveline torque perturbation via conversion of internal inertia through two transmission neutral conditions. In an example, when a request is received, e.g., from an operator, to shift the driveline PTO from a first mode to a second mode, the transmission is automatically modulated between its first neutral condition and its second neutral condition while the driveline PTO is shifted from the first mode to the second mode, thus minimizing torque lock and facilitating mode changes.
    Type: Application
    Filed: July 31, 2007
    Publication date: February 5, 2009
    Applicant: Caterpillar Inc.
    Inventors: James W. Landes, Ryan L. Horihan, Kevin G. Meyer, Travis Edward Moore