Patents by Inventor Tomoyuki IIBOSHI

Tomoyuki IIBOSHI 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).

  • Human-powered vehicle drive unit
    Patent number: 11104401
    Abstract: A human-powered vehicle drive unit that reduces loss of human driving force includes an electric motor, a crankshaft, an output portion, a speed reducer, and a clutch. The electric motor is configured to assist in propulsion of a human-powered vehicle. The output portion is coupled to the crankshaft. The speed reducer reduces a rotational speed of the electric motor in multiple steps. The clutch is provided between the output portion and the speed reducer. In a case in which the crankshaft rotates in a first rotational direction, the output portion is configured to rotate in the first rotational direction. In a case in which the crankshaft rotates in a second rotational direction, the output portion is configured to rotate in the second rotational direction. The clutch is configured to transmit a rotational force of the electric motor to the output portion from the speed reducer.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: August 31, 2021
    Assignee: Shimano Inc.
    Inventors: Shinichiro Noda, Tomoyuki Iiboshi, Takaaki Fujiwara, Akihiro Izawa
  • HUMAN-POWERED VEHICLE DRIVE UNIT
    Publication number: 20190367127
    Abstract: A human-powered vehicle drive unit that reduces loss of human driving force includes an electric motor, a crankshaft, an output portion, a speed reducer, and a clutch. The electric motor is configured to assist in propulsion of a human-powered vehicle. The output portion is coupled to the crankshaft. The speed reducer reduces a rotational speed of the electric motor in multiple steps. The clutch is provided between the output portion and the speed reducer. In a case in which the crankshaft rotates in a first rotational direction, the output portion is configured to rotate in the first rotational direction. In a case in which the crankshaft rotates in a second rotational direction, the output portion is configured to rotate in the second rotational direction. The clutch is configured to transmit a rotational force of the electric motor to the output portion from the speed reducer.
    Type: Application
    Filed: May 15, 2019
    Publication date: December 5, 2019
    Inventors: Shinichiro NODA, Tomoyuki IIBOSHI, Takaaki FUJIWARA, Akihiro IZAWA