Patents by Inventor Hideo Fukumura

Hideo Fukumura 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).

  • Bending meshing type gear device and method of manufacturing bending meshing type gear device
    Patent number: 11746874
    Abstract: A bending meshing type gear device includes a wave generator, an external gear that is bent and deformed by the wave generator, an internal gear that meshes with the external gear, and a wave generator bearing disposed between the wave generator and the external gear, in which an inner ring rolling surface on which a rolling element of the wave generator bearing rolls includes a hardened layer, and the hardened layer has a characteristic that a surface hardness after operating for a predetermined time is increased compared to a surface hardness before operation.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: September 5, 2023
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Masayuki Ishizuka, Hideo Fukumura, Takashi Maruyama
  • BENDING MESHING TYPE GEAR DEIVCE AND METHOD OF MANUFACTURING BENDING MESHING TYPE GEAR DEIVCE
    Publication number: 20220049761
    Abstract: A bending meshing type gear device includes a wave generator, an external gear that is bent and deformed by the wave generator, an internal gear that meshes with the external gear, and a wave generator bearing disposed between the wave generator and the external gear, in which an inner ring rolling surface on which a rolling element of the wave generator bearing rolls includes a hardened layer, and the hardened layer has a characteristic that a surface hardness after operating for a predetermined time is increased compared to a surface hardness before operation.
    Type: Application
    Filed: July 30, 2021
    Publication date: February 17, 2022
    Inventors: Masayuki Ishizuka, Hideo Fukumura, Takashi Maruyama