Patents by Inventor Fuminao OBAYASHI

Fuminao OBAYASHI 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: 9950641
    Abstract: An electric motorcycle includes a vehicle controller that outputs an instruction value based on an operation amount of at least an accelerator grip, and a motor driving unit that supplies a driving electric power in accordance with the instruction value to an electric motor. The vehicle controller is disposed outside a case that includes the motor driving unit disposed therein. The distance from the steering handle to the vehicle controller is shorter than the distance from the steering handle to the motor driving unit in a side view of the vehicle body, to simplify the cost of the electric wire and the work required to lay out the electric wire.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: April 24, 2018
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Tsukasa Shimizu, Hideki Shirazawa, Fuminao Obayashi
  • Publication number: 20170088013
    Abstract: An electric motorcycle includes a vehicle controller that outputs an instruction value based on an operation amount of at least an accelerator grip, and a motor driving unit that supplies a driving electric power in accordance with the instruction value to an electric motor. The vehicle controller is disposed outside a case that includes the motor driving unit disposed therein. The distance from the steering handle to the vehicle controller is shorter than the distance from the steering handle to the motor driving unit in a side view of the vehicle body, to simplify the cost of the electric wire and the work required to lay out the electric wire.
    Type: Application
    Filed: September 26, 2016
    Publication date: March 30, 2017
    Inventors: Tsukasa SHIMIZU, Hideki SHIRAZAWA, Fuminao OBAYASHI
  • Patent number: 9376164
    Abstract: An electrically assisted vehicle includes a vehicle body, pedals to input human power, a crank that is coupled to the pedals and freely rotatably supported on the vehicle body, a wheel (i.e., at least one wheel) that is attached to the vehicle body and rotates according to a rotation of the crank, a first electric motor that is attached to the vehicle body and drives the wheel, a second electric motor that is attached to the vehicle body and drives the wheel or another wheel, a torque detection unit that detects a torque applied to the crank, a torque command value calculation unit, and a motor drive unit that drives the first electric motor and second electric motor according to a calculated torque command value.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: June 28, 2016
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Hiroshi Tanaka, Fuminao Obayashi, Kazuto Nakamura
  • Patent number: 9061588
    Abstract: A vehicle includes a wheel, an electric motor that drives the wheel, a drive torque operator that is operated by an operator, a slip detection unit that detects a slipping state of the wheel, a torque command value calculation unit that calculates a torque command value for the electric motor, and a motor drive unit that drives the electric motor according to a calculated torque command value. When the slip detection unit has not detected a slipping state of the wheel, the torque command value calculation unit calculates a torque command value for the electric motor according to an input to the drive torque operator. When the slip detection unit has detected a slipping state of the wheel, the torque command value calculation unit calculates a torque command value that repeatedly fluctuates alternately between a first value not more than a torque command value at the time when wheel slip has been detected and a second value smaller than the first value.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: June 23, 2015
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Hiroshi Tanaka, Fuminao Obayashi
  • Publication number: 20150142242
    Abstract: A vehicle includes a wheel, an electric motor that drives the wheel, a drive torque operator that is operated by an operator, a slip detection unit that detects a slipping state of the wheel, a torque command value calculation unit that calculates a torque command value for the electric motor, and a motor drive unit that drives the electric motor according to a calculated torque command value. When the slip detection unit has not detected a slipping state of the wheel, the torque command value calculation unit calculates a torque command value for the electric motor according to an input to the drive torque operator. When the slip detection unit has detected a slipping state of the wheel, the torque command value calculation unit calculates a torque command value that repeatedly fluctuates alternately between a first value not more than a torque command value at the time when wheel slip has been detected and a second value smaller than the first value.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 21, 2015
    Inventors: Hiroshi TANAKA, Fuminao OBAYASHI
  • Publication number: 20150136509
    Abstract: An electrically assisted vehicle includes a vehicle body, pedals to input human power, a crank that is coupled to the pedals and freely rotatably supported on the vehicle body, at least one wheel that is attached to the vehicle body and rotates according to a rotation of the crank, a first electric motor that is attached to the vehicle body and drives the one wheel, a second electric motor that is attached to the vehicle body and drives the one wheel or another wheel, a torque detection unit that detects a torque applied to the crank, a torque command value calculation unit, and a motor drive unit that drives the first electric motor and second electric motor according to a calculated torque command value.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 21, 2015
    Inventors: Hiroshi TANAKA, Fuminao OBAYASHI, Kazuto NAKAMURA