Patents by Inventor Riku Nagayama

Riku Nagayama 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).

  • Publication number: 20240261161
    Abstract: An electric wheelchair includes: a vehicle body; a first drive wheel; a second drive wheel; a first motor; a second motor; a first grip; a second grip; a first operation detection unit configured to detect a position of the first grip in a front-rear direction; a second operation detection unit configured to detect a position of the second grip in the front-rear direction; a first rotation speed detection unit; a second rotation speed detection unit; and a controller. The controller is configured to control the first motor and the second motor so as to turn the vehicle body, based on a difference between a displacement amount of the first grip and a displacement amount of the second grip and a difference between a rotation speed of the first drive wheel and a rotation speed of the second drive wheel.
    Type: Application
    Filed: January 30, 2024
    Publication date: August 8, 2024
    Applicant: JTEKT CORPORATION
    Inventors: Nobuyuki TOGASHI, Hiroshi KITAMOTO, Nobuaki IKEHARA, Riku NAGAYAMA, Chishin YOHENA
  • Patent number: D958374
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: July 19, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Yoshinobu Katoh, Akihisa Umetani, Takeshi Koyama, Kensaku Kogushi, Yuki Kobayashi, Riku Nagayama, Tomoko Nagura, Katsuhide Kikuchi, Shintaro Yoshida, Mikio Shinohara
  • Patent number: D960381
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: August 9, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Yuki Kobayashi, Yoshinobu Katoh, Hiromichi Ohta, Akihisa Umetani, Takeshi Koyama, Yoshinori Wada, Riku Nagayama, Madoka Hattori, Katsuhide Kikuchi, Shintaro Yoshida, Mikio Shinohara
  • Patent number: D1027741
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: May 21, 2024
    Assignee: JTEKT CORPORATION
    Inventors: Hiroshi Kitamoto, Akihiro Takeuchi, Riku Nagayama, Chishin Yohena, Toshiki Kumeno, Nobuaki Ikehara, Nobuyuki Togashi, Goro Tsuji, Toshihiro Ishikawa
  • Patent number: D1027742
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: May 21, 2024
    Assignee: JTEKT CORPORATION
    Inventors: Hiroshi Kitamoto, Akihiro Takeuchi, Riku Nagayama, Chishin Yohena, Toshiki Kumeno, Nobuaki Ikehara, Nobuyuki Togashi, Goro Tsuji, Toshihiro Ishikawa
  • Patent number: D1042244
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: September 17, 2024
    Assignee: JTEKT CORPORATION
    Inventors: Hiroshi Kitamoto, Akihiro Takeuchi, Riku Nagayama, Chishin Yohena, Toshiki Kumeno, Nobuaki Ikehara, Nobuyuki Togashi, Goro Tsuji