Patents by Inventor Keisuke TAKEWAKA

Keisuke TAKEWAKA 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).

  • Rotation detecting device and hollow actuator
    Patent number: 10866123
    Abstract: A hollow type rotation detecting device has a 2-pole magnet ring and a multi-pole gear, the 2-pole magnet being coaxially fixed to the outer circumferential surface of the shaft end part of a hollow motor shaft that extends coaxially inside a cylindrical cover. In an annular gap between the cylindrical cover and the 2-pole magnet ring and multi-pole gear, rigid boards are arranged with an orientation facing in a tangential direction at prescribed intervals along the circumferential direction. The rigid boards are electrically connected to one another by flexible printed wiring boards. It is possible to obtain a rotation detecting device suitable to be incorporated into the narrow annular gap between a motor house and the shaft end part of the hollow motor shaft in a hollow motor having a large hollow diameter.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: December 15, 2020
    Assignee: HARMONIC DRIVE SYSTEMS INC.
    Inventors: Shintaro Ueno, Ryutaro Yamaguchi, Kiyoto Kobayashi, Keisuke Takewaka
  • ROTATION DETECTING DEVICE AND HOLLOW ACTUATOR
    Publication number: 20190301898
    Abstract: A hollow type rotation detecting device has a 2-pole magnet ring and a multi-pole gear, the 2-pole magnet being coaxially fixed to the outer circumferential surface of the shaft end part of a hollow motor shaft that extends coaxially inside a cylindrical cover. In an annular gap between the cylindrical cover and the 2-pole magnet ring and multi-pole gear, rigid boards are arranged with an orientation facing in a tangential direction at prescribed intervals along the circumferential direction. The rigid boards are electrically connected to one another by flexible printed wiring boards. It is possible to obtain a rotation detecting device suitable to be incorporated into the narrow annular gap between a motor house and the shaft end part of the hollow motor shaft in a hollow motor having a large hollow diameter.
    Type: Application
    Filed: June 10, 2016
    Publication date: October 3, 2019
    Applicant: HARMONIC DRIVE SYSTEMS INC.
    Inventors: Shintaro UENO, Ryutaro YAMAGUCHI, Kiyoto KOBAYASHI, Keisuke TAKEWAKA