Patents by Inventor Koujirou Kuramochi

Koujirou Kuramochi 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).

  • Patent number: 4044556
    Abstract: A hydraulic torque converter with a lock-up clutch wherein the cross section of a torus formed by an impeller, turbine and a stator is determined to satisfy that the ratio of its axial length L to its radial height H (L/H) is 0.64-0.80, the ratio of its inner diameter D.sub.i to its outer diameter D.sub.o (D.sub.i /D.sub.o) is 0.40-0.33 and the ratio of an annular flow passage area a at the exit of the impeller to a circular area A defined by the torus outer diameter (a/A) is 0.18-0.23.
    Type: Grant
    Filed: May 5, 1976
    Date of Patent: August 30, 1977
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Koujirou Kuramochi, Kiyoshi Ohnuma