Patents by Inventor Yuji Hida

Yuji Hida 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: 11002229
    Abstract: A hybrid vehicle includes: a crankcase extending from a lower portion of a cylinder of an engine, the crankcase including a main body portion defining a crank chamber in which a crankshaft of the engine is accommodated, the crankcase further including a breather portion projecting upwardly from the main body portion and defining a breather chamber into which blowby gas is introduced from the crank chamber; a breather tube that introduces the blowby gas from the breather chamber into the intake passage; and a drive motor disposed rearwardly of the cylinder and mounted on a top surface of the crankcase. The breather portion has a facing surface facing an outer peripheral surface of the drive motor. The facing surface of the breather portion is shaped to conform to the outer peripheral surface of the drive motor.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: May 11, 2021
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Masaki Nishiyabu, Yuji Hida
  • Publication number: 20210010591
    Abstract: A straddle vehicle includes: a shift drum that makes a shift change of a transmission including a plurality of gear trains; a transmission case enclosing the shift drum, the transmission case including a side wall portion provided with an insertion hole into which an end portion of the shift drum is inserted; and an actuator unit secured to an outer surface of the side wall portion, the actuator unit including a drive shaft that outputs drive power to rotate the shift drum, the drive shaft having the same rotational axis as the shift drum and being connected to the shift drum on the rotational axis.
    Type: Application
    Filed: June 8, 2020
    Publication date: January 14, 2021
    Inventors: Katsuya SANO, Masaki NISHIYABU, Satoaki ICHI, Kyohei IZUMI, Yuji HIDA
  • Publication number: 20210001707
    Abstract: A crankcase includes: a main body portion aligned with a drive motor in a direction perpendicular to a motor drive shaft; and an extended portion continuous with the main body portion and located lateral to a motor housing, the extended portion receiving insertion of one end of the motor drive shaft. A power transmission mechanism that transmits power from the motor drive shaft to an input shaft is located partly in a first region defined by the main body portion and partly in a second region defined by the extended portion and communicating with the first region.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 7, 2021
    Inventors: Masaki NISHIYABU, Satoaki ICHI, Kyohei IZUMI, Yuji HIDA
  • Publication number: 20210003208
    Abstract: A straddle vehicle includes: a prime mover; a hydraulically actuated main clutch disposed in a power transmission route between the prime mover and a drive wheel; an oil control valve unit that controls flow of a hydraulic oil supplied to the main clutch; and a power unit case including a case body and a cover removably mounted on the case body, the power unit case accommodating at least the main clutch. The oil control valve unit is secured to the case body.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 7, 2021
    Inventors: Masaki NISHIYABU, Kyohei IZUMI, Yuji HIDA
  • Publication number: 20210001706
    Abstract: A hybrid vehicle includes: a crankcase having a main chamber formed in a case body and accommodating at least a crankshaft, an input shaft, an output shaft, and a gear train, the crankcase further having a subsidiary chamber formed between the case body and a cover and accommodating at least a main clutch; a rotary member disposed in the subsidiary chamber so as to be capable of power transmission to the input shaft; and a power transmission member that transmits drive power from a drive motor to the rotary member.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 7, 2021
    Inventors: Masaki NISHIYABU, Satoaki ICHI, Kyohei IZUMI, Katsuya SANO, Yuji HIDA
  • Publication number: 20210003105
    Abstract: A hybrid vehicle includes: a crankcase extending from a lower portion of a cylinder of an engine, the crankcase including a main body portion defining a crank chamber in which a crankshaft of the engine is accommodated, the crankcase further including a breather portion projecting upwardly from the main body portion and defining a breather chamber into which blowby gas is introduced from the crank chamber; a breather tube that introduces the blowby gas from the breather chamber into the intake passage; and a drive motor disposed rearwardly of the cylinder and mounted on a top surface of the crankcase. The breather portion has a facing surface facing an outer peripheral surface of the drive motor. The facing surface of the breather portion is shaped to conform to the outer peripheral surface of the drive motor.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 7, 2021
    Inventors: Masaki NISHIYABU, Yuji HIDA
  • Publication number: 20210003210
    Abstract: A straddle vehicle includes: a prime mover; a hydraulically actuated main clutch; an oil control valve unit; a power unit case accommodating at least the main clutch; an oil pan mounted beneath the power unit case; a clutch-dedicated pump; a primary filter disposed in an oil passage between the oil pan and the clutch-dedicated pump; and a secondary filter disposed in an oil passage between the clutch-dedicated pump and the oil control valve unit. The primary filter and the secondary filter are mounted on a bottom surface of the power unit case and covered from below by the oil pan.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 7, 2021
    Inventors: Masaki NISHIYABU, Yuji HIDA
  • Patent number: 7717100
    Abstract: A breather structure of an engine having a crank case and a cylinder fastened to an upper side of the crank case can improve the strength of a cylinder and can prevent an increase of weight of the engine. The breather structure is provided with a breather chamber integrally formed with the cylinder in an outer peripheral wall of the cylinder, and the breather chamber separates air including an oil mist within the crank case into an oil component and a gas component, returns the oil component into an oil reservoir of the engine, and discharges the gas component out of the crank case.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: May 18, 2010
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Hisatoyo Arima, Ichiro Tanaka, Yuji Hida, Hiroshi Kanmera
  • Patent number: 7316208
    Abstract: The present invention provides a generator cooling system of an engine which can supply sufficient cooling oil to a generator even during low speed operation, without complicating an oil passage formed within a wall of a crankcase. In the generator cooling system of the engine having a generator accommodated in a generator room which is formed at an end portion of the crankcase in a longitudinal direction of a crankshaft of the engine, the generator cooling system is provided with an oil passage formed to the crankcase in a position lower than an axis of the crankshaft, and an oil nozzle provided in the oil passage for injecting oil of the oil passage toward a lower portion within the generator room.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: January 8, 2008
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Ichiro Tanaka, Yoshiharu Matsuda, Yuji Hida
  • Publication number: 20070062467
    Abstract: The present invention provides a generator cooling system of an engine which can supply a sufficient cooling oil to a generator even at a time of a low speed operation, without complicating an oil passage formed within a wall of a crank case. In the generator cooling system of the engine having a generator accommodated in a generator room which is formed at an end portion of the crank case in a longitudinal direction of a crank shaft of the engine, the generator cooling system is provided with an oil passage formed to the crank case in a lower position than an axis of the crank shaft, and an oil nozzle for provided in the oil passage injecting oil of the oil passage toward a lower portion within the generator room.
    Type: Application
    Filed: September 13, 2006
    Publication date: March 22, 2007
    Inventors: Ichiro Tanaka, Yoshiharu Matsuda, Yuji Hida
  • Publication number: 20070062500
    Abstract: The invention provides a breather structure of an engine which can improve strength of a cylinder and can prevent an increase of weight of the engine. The engine has a crank case and a cylinder fastened to an upper side of the crank case. The breather structure is provided with a breather chamber integrally formed with the cylinder in an outer peripheral wall of the cylinder, and the breather chamber separates an air including an oil mist within the crank case into oil component and gas component, returns the oil component into an oil reservoir of the engine, and discharges the gas component out of the crank case.
    Type: Application
    Filed: September 11, 2006
    Publication date: March 22, 2007
    Inventors: Hisatoyo Arima, Ichiro Tanaka, Yuji Hida, Hiroshi Kanmera