Patents by Inventor Kohei Ito

Kohei Ito 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: 12226840
    Abstract: A straight line along the second line segment and a straight line along the fourth line segment form an acute angle. The straight line along the second line segment and the straight line along the third line segment form an obtuse angle. The straight line along the first line segment and the straight line along the fourth line segment form an obtuse angle. Each of the third curved portion and the fourth curved portion is larger in radius of curvature than the first curved portion and larger in radius of curvature than the second curved portion. In a direction perpendicular to the bottom surface, a distance between the top surface and the bottom surface is equal to a distance between the cutting edge and the bottom surface, or is shorter than the distance between the cutting edge and the bottom surface.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: February 18, 2025
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Kouki Matsubara, Sachie Goto, Kohei Ito, Toya Nonen
  • Patent number: 12123485
    Abstract: The present disclosure provides a differential gear to be mounted on a vehicle, including a pair of side gears, at least two pinion gears meshed with the side gears, and a differential case that houses the side gears and the at least two pinion gears. Lubricating oil is supplied to and discharged from the inside of the differential case via an opening portion. The differential case includes at least two seat surfaces formed on the inner peripheral surface of the differential case so as to support the pinion gears, weir portions provided between the adjacent seat surfaces and extending in a direction along the rotational direction of the differential case to connect between the adjacent seat surfaces, and an oil reservoir portion formed on the inner peripheral surface by the weir portions so as to be positioned on the opposite side, in the axial direction of the side gears, of the opening portion from the weir portions.
    Type: Grant
    Filed: October 6, 2021
    Date of Patent: October 22, 2024
    Assignee: AISIN CORPORATION
    Inventors: Kaoru Nadayoshi, Kohei Ito
  • Publication number: 20230407954
    Abstract: The present disclosure provides a differential gear to be mounted on a vehicle, including a pair of side gears, at least two pinion gears meshed with the side gears, and a differential case that houses the side gears and the at least two pinion gears. Lubricating oil is supplied to and discharged from the inside of the differential case via an opening portion. The differential case includes at least two seat surfaces formed on the inner peripheral surface of the differential case so as to support the pinion gears, weir portions provided between the adjacent seat surfaces and extending in a direction along the rotational direction of the differential case to connect between the adjacent seat surfaces, and an oil reservoir portion formed on the inner peripheral surface by the weir portions so as to be positioned on the opposite side, in the axial direction of the side gears, of the opening portion from the weir portions.
    Type: Application
    Filed: October 6, 2021
    Publication date: December 21, 2023
    Applicant: AISIN CORPORATION
    Inventors: Kaoru NADAYOSHI, Kohei ITO
  • Publication number: 20230273048
    Abstract: An information processing apparatus acquires information indicating how the feet of a user wearing shoes move based on data acquired by an electronic device attached to the shoes and determines whether the user is tired based on the acquired information.
    Type: Application
    Filed: February 24, 2023
    Publication date: August 31, 2023
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Kohei ITO
  • Publication number: 20220339718
    Abstract: A straight line along the second line segment and a straight line along the fourth line segment form an acute angle. The straight line along the second line segment and the straight line along the third line segment form an obtuse angle. The straight line along the first line segment and the straight line along the fourth line segment form an obtuse angle. Each of the third curved portion and the fourth curved portion is larger in radius of curvature than the first curved portion and larger in radius of curvature than the second curved portion. In a direction perpendicular to the bottom surface, a distance between the top surface and the bottom surface is equal to a distance between the cutting edge and the bottom surface, or is shorter than the distance between the cutting edge and the bottom surface.
    Type: Application
    Filed: September 2, 2020
    Publication date: October 27, 2022
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Kouki MATSUBARA, Sachie GOTO, Kohei ITO, Toya NONEN
  • Patent number: 11306817
    Abstract: A control apparatus for a vehicle that includes an engine; a transmission; a damper and a clutch. The transmission has a gear ratio that is variable in a range including a torque-fluctuation insufficient absorption region in which a damper spring of the damper is elastically deformed to a certain maximum limit when a misfire occurs in the engine. The control apparatus includes: a misfire determination portion configured to determine occurrence of the misfire in the engine; and a misfire-case shift control portion configured, upon determination of the occurrence of the misfire in the engine by the misfire determination portion when the gear ratio of the transmission is in the torque-fluctuation insufficient absorption region, to cause the transmission to execute a shift-down action such that the gear ratio becomes higher than a higher threshold value of the torque-fluctuation insufficient absorption region.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: April 19, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kohei Ito
  • Patent number: 11274993
    Abstract: A tire testing method includes: applying a lubrication solution to a bead part of a tire; detecting a phase of a reference point of the tire; detecting a phase of a rotation origin of a spindle at common coordinates shared with coordinates at which the phase of the reference point is indicated; detecting a singular point present on the tire by conducting a tire test while rotating the tire on the spindle, and detecting a phase from the rotation origin to the singular point; calculating a phase from the reference point to the singular point based on the phase of the reference point, the phase of the rotation origin, and the phase from the rotation origin to the singular point; storing information about the reference point and information about the rotation origin at the common coordinates; and marking the tire at a position where the singular point is present.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: March 15, 2022
    Assignee: Kobe Steel, Ltd.
    Inventors: Kohei Ito, Yasuhiro Matsushita, Koji Goto
  • Publication number: 20210277993
    Abstract: A control apparatus for a vehicle that includes an engine; a transmission; a damper and a clutch. The transmission has a gear ratio that is variable in a range including a torque-fluctuation insufficient absorption region in which a damper spring of the damper is elastically deformed to a certain maximum limit when a misfire occurs in the engine. The control apparatus includes: a misfire determination portion configured to determine occurrence of the misfire in the engine; and a misfire-case shift control portion configured, upon determination of the occurrence of the misfire in the engine by the misfire determination portion when the gear ratio of the transmission is in the torque-fluctuation insufficient absorption region, to cause the transmission to execute a shift-down action such that the gear ratio becomes higher than a higher threshold value of the torque-fluctuation insufficient absorption region.
    Type: Application
    Filed: March 2, 2021
    Publication date: September 9, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kohei ITO
  • Patent number: 10826461
    Abstract: An acoustic wave device includes: a piezoelectric substrate; a comb-shaped electrode located on the piezoelectric substrate; a pair of reflectors located on the piezoelectric substrate, the pair of reflectors sandwiching the comb-shaped electrode; a first dielectric film located on the piezoelectric substrate, the first dielectric film covering the pair of reflectors and having side surfaces in regions between the comb-shaped electrode and the pair of reflectors; and a second dielectric film located on the piezoelectric substrate, the second dielectric film covering the comb-shaped electrode and being in contact with the side surfaces of the first dielectric film.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: November 3, 2020
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Kohei Ito, Osamu Kawachi
  • Publication number: 20200025650
    Abstract: A tire testing method includes: applying a lubrication solution to a bead part of a tire; detecting a phase of a reference point of the tire; detecting a phase of a rotation origin of a spindle at common coordinates shared with coordinates at which the phase of the reference point is indicated; detecting a singular point present on the tire by conducting a tire test while rotating the tire on the spindle, and detecting a phase from the rotation origin to the singular point; calculating a phase from the reference point to the singular point based on the phase of the reference point, the phase of the rotation origin, and the phase from the rotation origin to the singular point; storing information about the reference point and information about the rotation origin at the common coordinates; and marking the tire at a position where the singular point is present.
    Type: Application
    Filed: March 23, 2018
    Publication date: January 23, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kohei ITO, Yasuhiro MATSUSHITA, Koji GOTO
  • Patent number: 10309467
    Abstract: A clutch is controlled to increase torque capacity of the clutch when fluctuations in torsional torque generated in a power transmission route between the clutch and a drive wheel are larger than a specified value during deceleration traveling. Accordingly, engine brake whose magnitude corresponds to an increased amount of the torque capacity of the clutch is actuated. Therefore, the fluctuations in the torsional torque can be suppressed by the engine brake.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: June 4, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kohei Ito
  • Patent number: 9880074
    Abstract: A tire and a drum are relatively moved so that a pressing load is increased, and stopped when the pressing load becomes a predetermined value lower than a target value. A value of the pressing load and a relative distance between the tire and the drum are measured at timings when a circumferential position of the tire is the same. A dynamic longitudinal spring constant of the tire is calculated by using change amounts of the pressing load and the relative distance. An adjustment amount serving as a distance by which the tire and the drum are relatively moved so that a value of the pressing load when relative movement is stopped becomes the target value is calculated by using the dynamic longitudinal spring constant and a difference between the arrival value and the target value. The tire and the drum are relatively moved by the adjustment amount.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: January 30, 2018
    Assignee: Kobe Steel, Ltd.
    Inventors: Kohei Ito, Yasuhiro Matsushita
  • Publication number: 20180013400
    Abstract: An acoustic wave device includes: a piezoelectric substrate; a comb-shaped electrode located on the piezoelectric substrate; a pair of reflectors located on the piezoelectric substrate, the pair of reflectors sandwiching the comb-shaped electrode; a first dielectric film located on the piezoelectric substrate, the first dielectric film covering the pair of reflectors and having side surfaces in regions between the comb-shaped electrode and the pair of reflectors; and a second dielectric film located on the piezoelectric substrate, the second dielectric film covering the comb-shaped electrode and being in contact with the side surfaces of the first dielectric film.
    Type: Application
    Filed: June 14, 2017
    Publication date: January 11, 2018
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Kohei ITO, Osamu KAWACHI
  • Publication number: 20170219027
    Abstract: A clutch is controlled to increase torque capacity of the clutch when fluctuations in torsional torque generated in a power transmission route between the clutch and a drive wheel are larger than a specified value during deceleration traveling. Accordingly, engine brake whose magnitude corresponds to an increased amount of the torque capacity of the clutch is actuated. Therefore, the fluctuations in the torsional torque can be suppressed by the engine brake.
    Type: Application
    Filed: January 23, 2017
    Publication date: August 3, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kohei ITO
  • Patent number: 9669837
    Abstract: An ECU executes control processing including the step of extracting amplitudes f1, f2 of a resonant zone when a traveling mode is in a hybrid traveling mode, the step of executing count processing, the step of starting a first resonance avoidance control when a first count value Nf1 is greater than a threshold value n(1), the step of starting a second resonance avoidance control when a second count value Nf2 is greater than a threshold value n(2), the step of releasing a clutch K2 when resonance continues even after elapse of a predetermined time period Tb from starting of the second resonance avoidance control, and the step of terminating the resonance avoidance control when predetermined time period Ta has elapsed from determination of occurrence of resonance.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: June 6, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kohei Ito
  • Publication number: 20160297448
    Abstract: An ECU executes control processing including the step of extracting amplitudes f1, f2 of a resonant zone when a traveling mode is in a hybrid traveling mode, the step of executing count processing, the step of starting a first resonance avoidance control when a first count value Nf1 is greater than a threshold value n(1), the step of starting a second resonance avoidance control when a second count value Nf2 is greater than a threshold value n(2), the step of releasing a clutch K2 when resonance continues even after elapse of a predetermined time period Tb from starting of the second resonance avoidance control, and the step of terminating the resonance avoidance control when predetermined time period Ta has elapsed from determination of occurrence of resonance.
    Type: Application
    Filed: April 7, 2016
    Publication date: October 13, 2016
    Inventor: Kohei Ito
  • Publication number: 20160252432
    Abstract: A tire and a drum are relatively moved so that a pressing load is increased, and stopped when the pressing load becomes a predetermined value lower than a target value. A value of the pressing load and a relative distance between the tire and the drum are measured at timings when a circumferential position of the tire is the same. A dynamic longitudinal spring constant of the tire is calculated by using change amounts of the pressing load and the relative distance. An adjustment amount serving as a distance by which the tire and the drum are relatively moved so that a value of the pressing load when relative movement is stopped becomes the target value is calculated by using the dynamic longitudinal spring constant and a difference between the arrival value and the target value. The tire and the drum are relatively moved by the adjustment amount.
    Type: Application
    Filed: December 8, 2015
    Publication date: September 1, 2016
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: KOHEI ITO, YASUHIRO MATSUSHITA
  • Patent number: 9065322
    Abstract: An inverter device including a plurality of switching elements that convert electric power between DC power and AC power, a base plate that includes a surface on which the switching elements are placed, AC terminals through which AC power is input and output to and from an external device and which are electrically connected to the switching elements, and a capacitor that smoothes DC power. The AC terminals are disposed to protrude from the base plate perpendicular to the surface in a first reference direction. The capacitor is disposed in a rectangular area so that long sides of the rectangle are parallel to the first reference direction in plan view, and is set adjacent to a base disposition area, in which the base plate and the AC terminals are disposed in a second reference direction that is a direction perpendicular to the first reference direction.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: June 23, 2015
    Assignee: AISIN AW CO., LTD.
    Inventors: Kohei Ito, Tatsuya Kondo, Tomoyuki Suzuki
  • Patent number: 9018807
    Abstract: An inverter includes a plurality of switching elements that convert between DC and AC power. A base plate includes a surface on which the switching elements are placed. Heat dissipating fins are provided on the opposite side of the base plate. Power is input and output through AC power terminals to and from a rotary electric machine to drive a vehicle. The terminals are electrically connected to the switching elements. A capacitor smoothes the DC power. The inverter is fixed to a case of the rotary electric machine. A rotating shaft of the rotary electric machine extends in a width direction of the vehicle. The base plate is disposed adjacent to the AC terminals in the width direction. A plurality of AC phase-terminals is sequentially arrayed perpendicular to the rotating shaft. The capacitor is disposed adjacent to the heat dissipating fins on the rear side of the vehicle.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: April 28, 2015
    Assignee: Aisin AW Co., Ltd.
    Inventors: Kohei Ito, Tatsuya Kondo, Tomoyuki Suzuki
  • Patent number: D1029058
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: May 28, 2024
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Kouki Matsubara, Sachie Goto, Kohei Ito, Toya Nonen