Patents by Inventor Shigeru Maeda

Shigeru Maeda 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: 11478840
    Abstract: Provided is a manufacturing method of a wire rod for forming a coil, the manufacturing method including the steps of: placing an element wire in a forming space surrounded by a plurality of split dies; and pressure-forming the element wire by moving the plurality of split dies in a direction of narrowing the forming space. In the step of pressure-forming the element wire, at least one of the plurality of split dies is moved, and the plurality of split dies each having a surface that changes in shape in a longitudinal direction of an element wire to pressure-form the element wire into the wire rod having a plurality of different cross-sectional shapes in the longitudinal direction.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: October 25, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Shigeharu Sumi, Shigeru Maeda
  • Publication number: 20220247286
    Abstract: A core body has an annular shape surrounding a central axis extending in an axial direction and includes core pieces connected to each other along a circumferential direction and each including a core piece body and a connector fixed to the core piece body. The connectors in the core pieces adjacent to each other in the circumferential direction include rotating connection portions connected to each other to be rotatable about a rotation axis extending in the axial direction, and rotation stopping portions which come into contact with each other in a radial direction.
    Type: Application
    Filed: January 12, 2022
    Publication date: August 4, 2022
    Inventors: Shigeru MAEDA, Tatsuki SHIGETA
  • Publication number: 20220239167
    Abstract: A motor armature includes a laminated body including a stack of magnetic bodies each having an annular and plate shape, an extended body that opposes an opposing peripheral surface that is at least one of an inner peripheral surface and an outer peripheral surface of the laminated body and extends along a stacking direction of the magnetic bodies, and a holder stacked on the laminated body in the stacking direction to hold the laminated body. The holder includes a plate portion that extends along the laminated body and has higher rigidity than the magnetic bodies, and a sleeve portion that extends in contact with the extended body.
    Type: Application
    Filed: July 13, 2020
    Publication date: July 28, 2022
    Inventors: Shigeru MAEDA, Ryoma SASAKI
  • Patent number: 11065966
    Abstract: In an apparatus for controlling a motorized vehicle equipped with a main rechargeable battery, electrical loads electrically connected to the main rechargeable battery via a voltage converter, a converter operating point setter is configured to, when current is passing between the main rechargeable battery and the electrical loads, based on a charging/discharging amount of the main rechargeable battery, set operating points of the voltage converter, each specifying a power conversion efficiency representing a ratio of input power to the electrical loads to output power of the main rechargeable battery and an output current of the voltage converter. A converter controller is configured to, based on the operating point set by the converter operating point setter, cause the voltage converter to convert the voltage of the main rechargeable battery, thereby supplying power to the electrical loads.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: July 20, 2021
    Assignee: DENSO CORPORATION
    Inventors: Kousuke Baba, Shigeru Maeda, Chinatsu Washizu
  • Patent number: 10953879
    Abstract: A vehicle control apparatus is applied to a vehicle including an engine as traveling drive source and a clutch device in a power transmission path connected to an output shaft of the engine. The vehicle control apparatus causes the vehicle to be in a coasting state by reducing power transmitted in the path by clutch device operation upon satisfaction of a predetermined implementation condition, and cancels coasting state by clutch device operation upon satisfaction of a predetermined coasting cancellation condition including at least an accelerator condition during coasting. The vehicle control apparatus includes a travel determination section determining coasting state of the vehicle, and a clutch control section performing half-clutch control during coasting at least at one of at the beginning of coasting and immediately before coasting is cancelled, the half-clutch control setting a degree of clutch device engagement to an intermediate degree.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: March 23, 2021
    Assignee: DENSO CORPORATION
    Inventors: Toshikazu Akita, Tomohisa Ose, Shigeru Maeda
  • Patent number: 10940515
    Abstract: A milling apparatus includes a plurality of milling roller units each including one milling roller that is made contact with, by pressing, one surface of one of a plurality of differently angled plate parts of an elongated metal milling material and another milling roller that is made contact with another surface of the plate part by pressing. At least one of the milling roller units mills a plate part different from a plate part milled by any other milling roller unit. A plurality of the milling roller units configured to mill an identical plate part are installed in a longitudinal direction of the plate part. The one milling roller and the other milling roller of at least one of the milling roller units are movable in axial directions thereof.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: March 9, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takahiro Tachibana, Shigeru Maeda
  • Patent number: 10910928
    Abstract: A stator assembly method in which coils that have slot housed portions and coil ends formed from a conductive wire are mounted to an annular stator core that has a plurality of teeth that extend from a back yoke toward an inner side in a radial direction and slots formed between two of the teeth.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: February 2, 2021
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shigeru Maeda, Masumi Tomura, Shingo Sato
  • Patent number: 10889174
    Abstract: A control apparatus sets an upper limit guard value to a base value when the MG provides torque assist to thereby limit the command value for the MG. Then, the control apparatus limits the command value for the MG using the upper limit guard value to limit the output of the MG. If an accelerator opening or the change rate thereof is not less than a predetermined value, the control apparatus corrects the upper limit guard value. The correction is made such that the larger accelerator opening or a larger change rate thereof causes the upper limit guard value to be larger to accomplish higher output. Similarly, if the SOC of the battery is not less than a predetermined value, the control apparatus corrects the upper limit guard value. If the engine speed is not less than a predetermined value, the control apparatus corrects the upper limit guard value.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: January 12, 2021
    Assignee: DENSO CORPORATION
    Inventors: Kohei Saito, Shigeru Maeda
  • Patent number: 10875408
    Abstract: In an apparatus for controlling a motorized vehicle equipped with a rechargeable battery, a rotary electric machine electrically connected to the rechargeable battery, and electrical loads electrically connected to the rechargeable battery, a machine operating point setter is configured to, when current is passing between the rechargeable battery and the rotary electric machine, set operating points of the rotary electric machine, each specifying a system efficiency representing a ratio of input/output dynamical power of the rotary electric machine to input/output power of the rechargeable battery, a torque of the rotary electric machine, and a rotational speed of the rotary electric machine that are taken as parameters, based on the amount of current flowing through the rechargeable battery. A rotary electric machine controller is configured to control the rotary electric machine to operate at the operating points of the rotary electric machine set by the machine operating point setter.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: December 29, 2020
    Assignee: DENSO CORPORATION
    Inventors: Chinatsu Washizu, Shigeru Maeda, Kousuke Baba, Masaru Suzuki
  • Patent number: 10680540
    Abstract: In an apparatus for controlling a motorized vehicle, a rotary electric machine controller is configured to perform intermittent operation by periodically alternating between a driving period and a coasting period. A torque determiner is configured to determine a first torque during the driving period and a second torque during the coasting period. A transition period determiner is configured to determine whether to set a transition period between the driving period and the coasting period. If the transition period is determined to be set, the torque determiner determines a third torque between the first torque and the second torque and within a predetermined rang. The rotary electric machine controller sets the transition period between the driving period and the coasting period and drive the rotary electric machine with the third torque during the transition period.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: June 9, 2020
    Assignee: DENSO CORPORATION
    Inventors: Masaru Suzuki, Kousuke Baba, Shigeru Maeda, Chinatsu Washizu
  • Publication number: 20200139423
    Abstract: Provided is a manufacturing method of a wire rod for forming a coil, the manufacturing method including the steps of: placing an element wire in a forming space surrounded by a plurality of split dies; and pressure-forming the element wire by moving the plurality of split dies in a direction of narrowing the forming space. In the step of pressure-forming the element wire, at least one of the plurality of split dies is moved, and the plurality of split dies each having a surface that changes in shape in a longitudinal direction of an element wire to pressure-form the element wire into the wire rod having a plurality of different cross-sectional shapes in the longitudinal direction.
    Type: Application
    Filed: June 12, 2018
    Publication date: May 7, 2020
    Inventors: Shigeharu SUMI, Shigeru MAEDA
  • Patent number: 10479359
    Abstract: A restart control device is applied to a vehicle which is provided with an internal combustion engine, an electric motor, a driving wheel, and a clutch. The restart control device has a restart-condition determining portion which determines whether a restart condition for restarting the internal combustion engine is established while the vehicle is coasting; a push-start portion which starts the internal combustion engine by a push-start; a start-up portion which starts the internal combustion engine by use of an electric motor; and a doubly start-up portion which tries to start the internal combustion engine by one of the push-start portion and the start-up portion when the restart-condition determining portion determines that the restart condition is established. The doubly start-up portion tries to start the internal combustion engine by another one of the push-up portion and the start-up portion when the internal combustion engine has not been started.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: November 19, 2019
    Assignee: DENSO CORPORATION
    Inventors: Tomohisa Ose, Tadatoshi Asada, Shigeru Maeda, Takashi Senda
  • Patent number: 10457285
    Abstract: A vehicle control device turns off a clutch to put a vehicle into an inertia operation state in response to a predetermined executing condition being met, and turns on the clutch to terminate the inertia operation state in response to a predetermined terminating condition being met during the inertia operation. The vehicle control device includes a deceleration degree calculating device, a determination device, and an operation control device. The deceleration degree calculating device calculates an actual deceleration degree. The determination device determines whether the actual deceleration degree is greater than a threshold value defined on the basis of a deceleration degree of the vehicle in an accelerator-off and clutch-on state. The operation control device terminates or maintains the inertia operation depending on a condition of the actual deceleration degree.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: October 29, 2019
    Assignee: DENSO CORPORATION
    Inventors: Shigeru Maeda, Akira Kato
  • Publication number: 20190267919
    Abstract: In an apparatus for controlling a motorized vehicle, a rotary electric machine controller is configured to perform intermittent operation by periodically alternating between a driving period and a coasting period. A torque determiner is configured to determine a first torque during the driving period and a second torque during the coasting period. A transition period determiner is configured to determine whether to set a transition period between the driving period and the coasting period. If the transition period is determined to be set, the torque determiner determines a third torque between the first torque and the second torque and within a predetermined rang. The rotary electric machine controller sets the transition period between the driving period and the coasting period and drive the rotary electric machine with the third torque during the transition period.
    Type: Application
    Filed: February 26, 2019
    Publication date: August 29, 2019
    Applicant: DENSO CORPORATION
    Inventors: Masaru SUZUKI, Kousuke BABA, Shigeru MAEDA, Chinatsu WASHIZU
  • Publication number: 20190263275
    Abstract: In an apparatus for controlling a motorized vehicle equipped with a main rechargeable battery, electrical loads electrically connected to the main rechargeable battery via a voltage converter, a converter operating point setter is configured to, when current is passing between the main rechargeable battery and the electrical loads, based on a charging/discharging amount of the main rechargeable battery, set operating points of the voltage converter, each specifying a power conversion efficiency representing a ratio of input power to the electrical loads to output power of the main rechargeable battery and an output current of the voltage converter. A converter controller is configured to, based on the operating point set by the converter operating point setter, cause the voltage converter to convert the voltage of the main rechargeable battery, thereby supplying power to the electrical loads.
    Type: Application
    Filed: February 26, 2019
    Publication date: August 29, 2019
    Applicant: DENSO CORPORATION
    Inventors: Kousuke BABA, Shigeru MAEDA, Chinatsu WASHIZU
  • Publication number: 20190263272
    Abstract: In an apparatus for controlling a motorized vehicle equipped with a rechargeable battery, a rotary electric machine electrically connected to the rechargeable battery, and electrical loads electrically connected to the rechargeable battery, a machine operating point setter is configured to, when current is passing between the rechargeable battery and the rotary electric machine, set operating points of the rotary electric machine, each specifying a system efficiency representing a ratio of input/output dynamical power of the rotary electric machine to input/output power of the rechargeable battery, a torque of the rotary electric machine, and a rotational speed of the rotary electric machine that are taken as parameters, based on the amount of current flowing through the rechargeable battery. A rotary electric machine controller is configured to control the rotary electric machine to operate at the operating points of the rotary electric machine set by the machine operating point setter.
    Type: Application
    Filed: February 26, 2019
    Publication date: August 29, 2019
    Applicant: DENSO CORPORATION
    Inventors: Chinatsu WASHIZU, Shigeru MAEDA, Kousuke BABA, Masaru SUZUKI
  • Patent number: 10284060
    Abstract: A stator assembly method and stator assembly apparatus in which coils that have slot housed portions and coil ends formed from a conductor are mounted to an annular stator core that includes slots formed between adjacent teeth that extend from a back yoke toward an inner side in a radial direction.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: May 7, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shingo Sato, Shigeru Maeda, Masumi Tomura
  • Publication number: 20190118820
    Abstract: A vehicle control apparatus is applied to a vehicle including an engine as traveling drive source and a clutch device in a power transmission path connected to an output shaft of the engine. The vehicle control apparatus causes the vehicle to be in a coasting state by reducing power transmitted in the path by clutch device operation upon satisfaction of a predetermined implementation condition, and cancels coasting state by clutch device operation upon satisfaction of a predetermined coasting cancellation condition including at least an accelerator condition during coasting. The vehicle control apparatus includes a travel determination section determining coasting state of the vehicle, and a clutch control section performing half-clutch control during coasting at least at one of at the beginning of coasting and immediately before coasting is cancelled, the half-clutch control setting a degree of clutch device engagement to an intermediate degree.
    Type: Application
    Filed: April 11, 2017
    Publication date: April 25, 2019
    Applicant: DENSO CORPORATION
    Inventors: Toshikazu AKITA, Tomohisa OSE, Shigeru MAEDA
  • Publication number: 20180367014
    Abstract: A stator assembly method in which coils that have slot housed portions and coil ends formed from a conductive wire are mounted to an annular stator core that has a plurality of teeth that extend from a back yoke toward an inner side in a radial direction and slots formed between two of the teeth.
    Type: Application
    Filed: August 22, 2018
    Publication date: December 20, 2018
    Applicant: AISIN AW CO., LTD.
    Inventors: Shingo HASHIMOTO, Shigeru MAEDA, Masumi TOMURA, Shingo SATO
  • Patent number: 10148158
    Abstract: A varnish impregnation apparatus that includes a support that supports a stator, in which the stator coil is mounted to the stator core, with an axial direction of the stator directed in a horizontal direction while grasping a radially outer side of the stator, and that is rotationally driven by a rotary device to rotate the stator; a varnish dropping device that drops the varnish toward a coil end portion of the stator which is rotated while being supported by the support; and a heater disposed in a cavity portion provided at an axial center of the stator core of the stator supported by the support to heat the stator from a radially inner side of the stator.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: December 4, 2018
    Assignee: AISIN AW CO., LTD.
    Inventors: Hideaki Kimura, Tsuyoshi Niwa, Takamitsu Sugimoto, Susumu Kato, Shigeru Maeda, Takeshi Yokoyama