Patents by Inventor Frédéric Toutain

Frédéric Toutain 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).

  • Multiple gear ratio transmission device
    Patent number: 7537539
    Abstract: The transmission device (1) comprises two power paths (8a, 8b) mounted in parallel, permanently connected to the upper shaft (2) of the engine (3) and the lower shaft (4) to control the differential (6). In each path (8a, 8b), each gear ratio Ia, IIa, IIIa or Ib, IIb, IIIb is obtained by activating a single activator capable of adapting the rotating speed between the two shafts 2 and 4 during gear ratio changes. A control device (17) synchronizes the activations/deactivations during gear ratio changes, whether the newly activated gear ratio is in the same path or a different path.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: May 26, 2009
    Assignee: Antonov Automotive Technologies B.V.
    Inventors: Roumen Antonov, Frédéric Toutain, Cyrille Benais
  • Multiple gear ratio transmission device
    Publication number: 20070111840
    Abstract: The transmission device (1) comprises two power paths (8a, 8b) mounted in parallel, permanently connected to the upper shaft (2) of the engine (3) and the lower shaft (4) to control the differential (6). In each path (8a, 8b), each gear ratio Ia, IIa, IIIa or Ib, IIb, IIIb is obtained by activating a single activator capable of adapting the rotating speed between the two shafts 2 and 4 during gear ratio changes. A control device (17) synchronises the activations/deactivations during gear ratio changes, whether the newly activated gear ratio is in the same path or a different path.
    Type: Application
    Filed: November 18, 2004
    Publication date: May 17, 2007
    Inventors: Roumen Antonov, Frederic Toutain, Cyrille Benais