Patents by Inventor Teisuke Ishizaka

Teisuke Ishizaka 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: 4194414
    Abstract: A multistage speed reducer for high speed rotation including a planetary roller friction reducer for the first stage reducer and a geared reducer for the second stage reducer, the planetary roller friction reducer having its output shaft also used as the input shaft of the geared reducer. Such an arrangement permits transmission of a very high speed and large horsepower rotation at a relatively high reduction ratio with low noise while at the same time consuming less space. The speed reducer may preferably be equipped with safety means for excessive torques.
    Type: Grant
    Filed: September 29, 1977
    Date of Patent: March 25, 1980
    Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Kabushiki Kaisha Fujikoshi
    Inventors: Akira Satoh, Teisuke Ishizaka