Patents by Inventor Shoichi Matsuzawa

Shoichi Matsuzawa 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).

  • Internally meshing planetary gear structure
    Patent number: 5188572
    Abstract: In an internally meshing planetary gear structure with trochoidal tooth profile, the input shaft and the eccentric body are coupled so that radial displacement is possible and that the displacement between the eccentric body shaft and the input shaft is absorbed. In addition to this, positioning members or thrust bearings are used to suppress the axial movement or the inclination of the eccentric body or the external-toothed gears.
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: February 23, 1993
    Assignee: Sumitomo Heavy Industries, Ltd.
    Inventors: Katsuyoshi Yamaguchi, Masatoshi Kondoh, Shigeo Hayashi, Masayoshi Sonokawa, Shoichi Matsuzawa, Atsushi Takahashi