Patents by Inventor Takashige Ebisumoto

Takashige Ebisumoto 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).

  • Speed ratio control for a step-lessly variable vehicle transmission
    Patent number: 4796489
    Abstract: A control system for controlling a steplessly variable power transmission device for a motor vehicle. The speed ratio of the transmission mechanism is based upon vehicle operating conditions, and particularly upon the vehicle speed and the engine load, either in terms of throttle setting or engine load pressure. Manual selector means are provided to select one of two control mode patterns for either economical operation or for power operation, and each of the control modes provides a different ratio of transmission input speed to output speed.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: January 10, 1989
    Assignee: Mazda Motor Corporation
    Inventors: Hiroaki Nagamatsu, Takashige Ebisumoto
  • Speed ratio control for a steplessly variable transmission
    Patent number: 4665775
    Abstract: A steplessly variable transmission of a belt-pulley type of which speed ratio is controlled in accordance with the vehicle speed and the engine load. A control system is provided for controlling the speed ratio, when the engine throttle valve is fully closed for deceleration, in accordance with the vehicle speed so that the speed ratio is decreased in response to a decrease in the vehicle speed. The control system provides an engine brake effect in deceleration which changes in accordance with a change in the vehicle speed.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: May 19, 1987
    Assignee: Mazda Motor Corporation
    Inventors: Hiroaki Nagamatsu, Takashige Ebisumoto