Patents by Inventor Kenji Shirouzu

Kenji Shirouzu 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: 12146559
    Abstract: Provided is a bending meshing type gear device including a wave generator, an external gear flexibly deformed by the wave generator, and an internal gear meshing with the external gear. The internal gear includes an internal tooth ring portion including an internal tooth formed on an inner periphery, an external connection portion connected to an external member, an easily deformable portion provided between the internal tooth ring portion and the external connection portion, and configured to be more easily deformable than the internal tooth ring portion, and a distortion measurer provided in the easily deformable portion.
    Type: Grant
    Filed: September 21, 2022
    Date of Patent: November 19, 2024
    Assignee: Sumitomo Heavy Industries, Ltd.
    Inventors: Martin Pointner, Sebastian Markert, Kenji Shirouzu
  • Patent number: 11649887
    Abstract: A gear device includes an external gear, and an internal gear that meshes with the external gear. The external gear is formed of metal. The internal gear is formed of a carbon fiber reinforced resin.
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: May 16, 2023
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Akira Yamamoto, Mitsuhiro Tamura, Kenji Shirouzu, Masahiro Watanabe, Toshiaki Matoba
  • Patent number: 11585422
    Abstract: A bending meshing type gear device includes a wave generator; an external gear that is disposed on an outer periphery of the wave generator, and is bendably deformed as the wave generator rotates; a first internal gear meshing with the external gear; a second internal gear that is disposed on one side in an axial direction of the first internal gear to mesh with the external gear; and a wave generator bearing that is disposed between the external gear and the wave generator in a state where movement in the axial direction of the wave generator bearing is restricted. The external gear includes a protrusion on an inner periphery of the external gear. The protrusion engages with the wave generator bearing to restrict movement in the axial direction of the external gear.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: February 21, 2023
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Kenji Shirouzu
  • Publication number: 20230008068
    Abstract: Provided is a bending meshing type gear device including a wave generator, an external gear flexibly deformed by the wave generator, and an internal gear meshing with the external gear. The internal gear includes an internal tooth ring portion including an internal tooth formed on an inner periphery, an external connection portion connected to an external member, an easily deformable portion provided between the internal tooth ring portion and the external connection portion, and configured to be more easily deformable than the internal tooth ring portion, and a distortion measurer provided in the easily deformable portion.
    Type: Application
    Filed: September 21, 2022
    Publication date: January 12, 2023
    Inventors: Martin Pointner, Sebastian Markert, Kenji Shirouzu
  • Publication number: 20210396304
    Abstract: A gear device includes an external gear, and an internal gear that meshes with the external gear. The external gear is formed of metal. The internal gear is formed of a carbon fiber reinforced resin.
    Type: Application
    Filed: June 16, 2021
    Publication date: December 23, 2021
    Inventors: Akira Yamamoto, Mitsuhiro Tamura, Kenji Shirouzu, Masahiro Watanabe, Toshiaki Matoba
  • Patent number: 11085509
    Abstract: A bending meshing type gear device includes a wave generator, an external gear which is bent and deformed by the wave generator, and an internal gear which meshes with the external gear, in which one gear of the external gear and the internal gear is formed of a resin, the other gear of the external gear and the internal gear is formed of a high thermal conductivity material having a thermal conductivity higher than that of the resin and wear resistance higher than that of the resin, and a tooth thickness of the one gear is larger than a tooth thickness of the other gear in a meshing range between the external gear and the internal gear.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: August 10, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Kenji Shirouzu
  • Publication number: 20210123515
    Abstract: A bending meshing type gear device includes a wave generator; an external gear that is disposed on an outer periphery of the wave generator, and is bendably deformed as the wave generator rotates; a first internal gear meshing with the external gear; a second internal gear that is disposed on one side in an axial direction of the first internal gear to mesh with the external gear; and a wave generator bearing that is disposed between the external gear and the wave generator in a state where movement in the axial direction of the wave generator bearing is restricted. The external gear includes a protrusion on an inner periphery of the external gear. The protrusion engages with the wave generator bearing to restrict movement in the axial direction of the external gear.
    Type: Application
    Filed: October 28, 2020
    Publication date: April 29, 2021
    Inventor: Kenji Shirouzu
  • Publication number: 20200072318
    Abstract: A bending meshing type gear device includes a wave generator, an external gear which is bent and deformed by the wave generator, and an internal gear which meshes with the external gear, in which one gear of the external gear and the internal gear is formed of a resin, the other gear of the external gear and the internal gear is formed of a high thermal conductivity material having a thermal conductivity higher than that of the resin and wear resistance higher than that of the resin, and a tooth thickness of the one gear is larger than a tooth thickness of the other gear in a meshing range between the external gear and the internal gear.
    Type: Application
    Filed: August 20, 2019
    Publication date: March 5, 2020
    Inventor: Kenji Shirouzu