Patents by Inventor Robert Mestres

Robert Mestres 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).

  • Method for controlling an automatic transmission gear ratio shifts
    Patent number: 6459977
    Abstract: A method for blocking and releasing gear ratios in a vehicle equipped with an automatic gear box. The process includes combined functions F1, F2, F3 in which F1 is a function for blocking a passage of a transmission ratio during a first time delay, F2 is a function for blocking passage of a ratio in response to an instability of a fuel throttle opening angle, and F3 is a function for blocking passage of a ratio in response to a deceleration of the vehicle.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: October 1, 2002
    Assignees: Renault, Automobiles Peugeot, Automobiles Citroen
    Inventors: Christian Taffin, Robert Mestres
  • Method for controlling automatic transmission downshift phases
    Patent number: 6360155
    Abstract: A method for controlling automatic transmission downshift phases. The method determines conditions in which the downshift passes from normal operating conditions based on predetermined passage laws to special downshift operating conditions, and senses the passage to the special operating conditions. On sensing the passage to the special operating conditions, downshifting is effectuated by passing from the current gear ratio to a lower gear ratio, and blocking the lower gear ratio until the special downshift operating conditions disappear.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: March 19, 2002
    Assignees: Renault, Automobiles Peugeot, Automobiles Citroen
    Inventors: Christian Taffin, Robert Mestres