Patents by Inventor Michael Francis O'Leary

Michael Francis O'Leary 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).

  • Active damper for a planetary gear arrangement
    Patent number: 6974401
    Abstract: A planetary gear arrangement having at least three rotatable members with intermeshing gears and a primary torque path defined therein. At least one active friction damper is disposed between two of the planetary gear members, for example, a sun gear and a ring gear. The active damper is selectively operable to apply frictional engagement between the two members with which it is interconnected to establish a controlled secondary torque path therebetween. The active damper is effective to reduce gear lash changes between the gear members of a planetary assembly.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: December 13, 2005
    Assignee: General Motors Corporation
    Inventors: Michael Francis O'Leary, David Allen Gilbert, Jeffrey S. Rayce