Patents by Inventor Robert Casenaz

Robert Casenaz 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).

  • Infinitely-variable transmission with double mode power transmission controlled by a sliding dog for a motor vehicle
    Patent number: 7614973
    Abstract: An infinitely-variable transmission with double mode power transmission for a motor vehicle, provided with a combustion engine, including a first power transmission path with a composite epicyclic gear train connecting the combustion engine to the vehicle wheels, a second power transmission path with a simple epicyclic gear train, two electric motors providing a continuous speed variator, a second simple epicyclic gear train for mode change, and an engagement/disengagement unit that can block or release a mode-changing body in the second epicyclic gear train, according to the operating mode. The engagement/disengagement body includes a sliding sleeve with a dog tooth, which can be displaced by a hydraulic actuator and with two sets of dog teeth fixed to a mode-changing body in the second epicyclic gear train.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: November 10, 2009
    Assignee: Renault S.A.S.
    Inventors: Jean-Pierre Parthuisot, Robert Casenaz
  • Infinitely-Variable Transmission with Double Mode Power Transmission Controlled by a Sliding Dog for a Motor Vehicle
    Publication number: 20070240962
    Abstract: An infinitely-variable transmission with double mode power transmission for a motor vehicle, provided with a combustion engine, including a first power transmission path with a composite epicyclic gear train connecting the combustion engine to the vehicle wheels, a second power transmission path with a simple epicyclic gear train, two electric motors providing a continuous speed variator, a second simple epicyclic gear train for mode change, and an engagement/disengagement unit that can block or release a mode-changing body in the second epicyclic gear train, according to the operating mode. The engagement/disengagement body includes a sliding sleeve with a dog tooth, which can be displaced by a hydraulic actuator and with two sets of dog teeth fixed to a mode-changing body in the second epicyclic gear train.
    Type: Application
    Filed: May 23, 2005
    Publication date: October 18, 2007
    Applicant: Renault S.A.S.
    Inventors: Jean-Pierre Parthuisot, Robert Casenaz