Patents by Inventor Yuu Yaguchi

Yuu Yaguchi 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: 11965565
    Abstract: A system for controlling a clutch is provided with: a thrust member movable between a first position for disconnecting the clutch and a second position for connecting the clutch; a solenoid generating a magnetic flux in response to input of electric power; a movable element drivingly coupled with the thrust member and set into motion by the magnetic flux to drive the thrust member between the first position and the second position; an electric circuit configured to add alternating-current power to the electric power and apply the electric power with the alternating-current power to the solenoid; and a controller configured to detect a phase difference of an electric current relative to an electric voltage in the alternating-current power added to the electric power and compare the detected phase difference with a reference value to determine whether the thrust member is at the first position or at the second position.
    Type: Grant
    Filed: June 13, 2023
    Date of Patent: April 23, 2024
    Assignee: GKN Automotive Limited
    Inventor: Yuu Yaguchi
  • Publication number: 20240068528
    Abstract: An actuator for externally manipulating a clutch within a machine rotatable about an axis is provided with a driving unit including a plurality of magnetic coils arranged around the axis, each of the coils being arranged to generate a magnetic flux in a direction parallel to the axis; an armature disposed coaxially with the axis and opposed axially to the driving unit, the armature being movable axially; and a plunger coupled with the armature to transmit axial motion to the clutch.
    Type: Application
    Filed: October 18, 2023
    Publication date: February 29, 2024
    Inventor: Yuu Yaguchi
  • Patent number: 11885399
    Abstract: A power transmission device is provided with: a rotary body arranged to receive the torque to rotate about an axis; a clutch including a clutch member engaging with the rotary body and axially movable and clutch teeth connectable with the clutch member to transmit the torque; a solenoid configured to generate a magnetic flux in response to input of electric power; a stator coupled with the solenoid as to conduct the magnetic flux and prevented from rotation about the axis; a rotor arranged to receive the magnetic flux from the stator and, when driven by the received magnetic flux, to create a rotational motion about the axis; and a conversion mechanism drivingly connected with the rotor to convert the rotational motion into a linear motion in a direction along the axis, the conversion mechanism including a thrust member transmitting the linear motion to the clutch member.
    Type: Grant
    Filed: April 11, 2023
    Date of Patent: January 30, 2024
    Assignee: GKN Automotive Limited
    Inventors: Yuu Yaguchi, Toshiaki Komatsu, Masato Horiguchi, Toshiyuki Kikuchi
  • Publication number: 20230417294
    Abstract: A system for controlling a clutch is provided with: an action member rotatable about an axis; a motor drivingly connected to the action member to impart a rotational motion about the axis to the action member; a conversion mechanism drivingly connected to the action member to convert the rotational motion about the axis into an axial motion; a clutch member constituting the clutch and drivingly connected to the conversion mechanism so as to be driven by the axial motion, the clutch member being movable axially bidirectionally from a first position where the clutch is disconnected, through a second position, to a third position where the clutch is connected; and a controller configured to measure and compare a rotational angle of the motor with a reference value to determine at which of the first position, the second position, and the third position the clutch member is.
    Type: Application
    Filed: September 8, 2023
    Publication date: December 28, 2023
    Inventors: Yuu Yaguchi, Takahiro Nagaoka, Ryuya Saito, Kazutaka Kawata
  • Publication number: 20230323923
    Abstract: A system for controlling a clutch is provided with: a thrust member movable between a first position for disconnecting the clutch and a second position for connecting the clutch; a solenoid generating a magnetic flux in response to input of electric power; a movable element drivingly coupled with the thrust member and set into motion by the magnetic flux to drive the thrust member between the first position and the second position; an electric circuit configured to add alternating-current power to the electric power and apply the electric power with the alternating-current power to the solenoid; and a controller configured to detect a phase difference of an electric current relative to an electric voltage in the alternating-current power added to the electric power and compare the detected phase difference with a reference value to determine whether the thrust member is at the first position or at the second position.
    Type: Application
    Filed: June 13, 2023
    Publication date: October 12, 2023
    Inventor: Yuu Yaguchi
  • Publication number: 20230243409
    Abstract: A power transmission device is provided with: a rotary body arranged to receive the torque to rotate about an axis; a clutch including a clutch member engaging with the rotary body and axially movable and clutch teeth connectable with the clutch member to transmit the torque; a solenoid configured to generate a magnetic flux in response to input of electric power; a stator coupled with the solenoid as to conduct the magnetic flux and prevented from rotation about the axis; a rotor arranged to receive the magnetic flux from the stator and, when driven by the received magnetic flux, to create a rotational motion about the axis; and a conversion mechanism drivingly connected with the rotor to convert the rotational motion into a linear motion in a direction along the axis, the conversion mechanism including a thrust member transmitting the linear motion to the clutch member.
    Type: Application
    Filed: April 11, 2023
    Publication date: August 3, 2023
    Inventors: Yuu Yaguchi, Toshiaki Komatsu, Masato Horiguchi, Toshiyuki Kikuchi
  • Patent number: 10843564
    Abstract: A vehicle includes a first axle temporary driven by a motor, a second axle permanently connected to the motor via a propeller shaft, and a sub-shaft that connects the propeller shaft and the first axle. A control system for a connection between the motor and the first axle includes a first clutch between the propeller shaft and the sub-shaft, a second clutch between the sub-shaft and the first axle. The first clutch is controlled to continue applying a synchronous torque until the second clutch is determined to be connected. The second clutch is controlled to be connected in response to a determination that the second clutch is connectable.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: November 24, 2020
    Assignee: GKN Automotive Ltd.
    Inventors: Yuu Yaguchi, Takahiro Nagaoka, Yasumasa Narita
  • Publication number: 20200070655
    Abstract: A vehicle includes a first axle temporary driven by a motor, a second axle permanently connected to the motor via a propeller shaft, and a sub-shaft that connects the propeller shaft and the first axle. A control system for a connection between the motor and the first axle includes a first clutch between the propeller shaft and the sub-shaft, a second clutch between the sub-shaft and the first axle. The first clutch is controlled to continue applying a synchronous torque until the second clutch is determined to be connected. The second clutch is controlled to be connected in response to a determination that the second clutch is connectable.
    Type: Application
    Filed: July 11, 2019
    Publication date: March 5, 2020
    Inventors: Yuu Yaguchi, Takahiro Nagaoka, Yasumasa Narita