Patents by Inventor Kazuma Aoki

Kazuma Aoki 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).

  • Publication number: 20260200342
    Abstract: A control system for a vehicle configured to suppress vibrations and shocks when releasing a parking lock mechanism in a situation where a drive shaft is twisted. The control system is configured to: control the motor to start generation of a torque counteracting an estimated torsional torque acting on the driver shaft whose magnitude is equal to the estimated torsional torque or smaller, when the rotary member being locked by the parking lock mechanism is predicted to be released; and terminate the torque generation by the motor when the motor generating the torque starts rotating.
    Type: Application
    Filed: December 29, 2025
    Publication date: July 16, 2026
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuma AOKI, Takeshi Kitahata, Noritaka Takuda, Hiroto Amada, Tatsuya Kawamura, Takeshi Ishiwada
  • Publication number: 20260200341
    Abstract: A control system for a vehicle configured not to generate vibrations and shocks by a torque of a motor counteracting a torsion of a drive shaft locked to park the vehicle. The control system to controls a motor to generate an assist torque counteracting a torsional torque acting on a drive shaft, in a situation where: an inclination angle of the vehicle in the pitching direction at the point when the drive shaft was locked is equal to or greater than the first predetermined angle; torsion of the drive shaft is determined; and an inclination angle of the vehicle in the pitching direction at the point when the drive shaft is released is equal to or greater than the second predetermined angle.
    Type: Application
    Filed: January 7, 2026
    Publication date: July 16, 2026
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuma AOKI, Takeshi ISHIWADA, Hiroto AMADA, Noritaka TAKUDA, Tatsuya KAWAMURA, Takeshi KITAHATA
  • Publication number: 20260200337
    Abstract: A control system for a vehicle configured to suppress vibrations and shocks when releasing a parking lock mechanism in a situation where a drive shaft is twisted. The vehicle comprises: a drive shaft in which one end thereof is joined to a wheel; a motor that applies a torque to the drive shaft; and a parking lock mechanism that selectively stops a rotation of a rotary member arranged between the motor and the drive shaft. The control system is configured to control the motor to generate a torque determined based on the inclination direction of the vehicle in the pitching direction when releasing the rotary member locked by the parking lock mechanism.
    Type: Application
    Filed: January 2, 2026
    Publication date: July 16, 2026
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuma AOKI, Takeshi Ishiwada, Hiroto Amada, Noritaka Takuda, Tatsuya Kawamura, Takeshi Kitahata
  • Publication number: 20260145583
    Abstract: A heating system configured to efficiently raise a temperature of an electric storage device before charging while avoiding a wasteful power consumption. The heating system comprises: an integrator that calculates an integrated value of power consumed by an electric heater to raise a temperature of a battery; a power consumption determiner that compares the integrated value of the power consumption with a reference value; and a heating controller that terminates the heating of the battery when the integrated value of the power consumption is the reference value or greater, and permits the heating of the battery when the integrated value of the power consumption is less than the reference value.
    Type: Application
    Filed: November 24, 2025
    Publication date: May 28, 2026
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuma AOKI, Noritaka TAKUDA, Hiroto AMADA
  • Publication number: 20260071991
    Abstract: Provided is a potassium ion-selective electrode with higher stability and a manufacturing method therefor. An all-solid-state potassium ion-selective electrode includes a conductor, an insertion material formed on a surface of the conductor, and a potassium ion-sensitive membrane covering the insertion material. The insertion material is a mixed material containing Prussian blue analogue particles and conductive material particles. The Prussian blue analogue particles are represented by a structural formula KxFe[Fe(CN)6]y·nH2O. The Prussian blue analogue particles have at least partially a monoclinic crystal structure, and x is a number equal to or greater than 1.5 and equal to or less than 2, y is a number greater than 0 and equal to or less than 1, and n is a number equal to or greater than 0.
    Type: Application
    Filed: June 28, 2023
    Publication date: March 12, 2026
    Applicants: KOA Corporation, Tokyo University of Science Foundation
    Inventors: Toshiharu TAKAYAMA, Takahiro MATSUI, Yuko TAKEI, Kazuma AOKI, Shinichi KOMABA, Ryoichi TATARA, Kenta ISHIHARA
  • Patent number: 12454037
    Abstract: An impact tool (1) includes: a motor (6) having a rotor (27) that is rotatable about a rotational axis (AX); a spindle (8) disposed forward of the stator and rotating when the rotor rotates; an anvil (10) having at least a portion disposed forward of the spindle and mounting a bit (300); a hammer (47), which rotatably impacts the anvil; and a housing (2), which has a motor-housing part (21) that houses the motor. The maximum tightening torque is 140 N·m or more. Overall length (La), which is the distance—in the front-rear direction parallel to the rotational axis—between a rear-end portion of the motor-housing part and a front-end portion of the anvil, is 100 mm or less. The hammer has a base portion, a front-side ring portion protruding forward from the base portion, and hammer projection portions protruding radially inward from the front ring portion.
    Type: Grant
    Filed: October 7, 2024
    Date of Patent: October 28, 2025
    Assignee: MAKITA CORPORATION
    Inventors: Kazuma Aoki, Tomoro Aoyama
  • Patent number: 12390909
    Abstract: An impact tool includes: a brushless motor; a spindle, which is rotated by the brushless motor; a hammer, which is held on the spindle; an anvil, which is impacted in a rotational direction by the hammer, a polymer housing, which houses the brushless motor; a hammer case, which is connected to the polymer housing and houses the hammer and the spindle; and a light unit, which is held on the hammer case and comprises a plurality of light-emitting devices. The maximum tightening torque of the anvil is 1,000 N·m or more and 2,500 N·m or less.
    Type: Grant
    Filed: March 8, 2024
    Date of Patent: August 19, 2025
    Assignee: MAKITA CORPORATION
    Inventors: Tokuo Hirabayashi, Haruki Tejima, Kazuma Aoki, Kazunori Kinoshita
  • Patent number: 12377525
    Abstract: An impact tool includes: a brushless motor; a spindle, which is rotated by the brushless motor; a hammer, which is held on the spindle; an anvil, which is impacted in a rotational direction by the hammer; a polymer housing, which houses the brushless motor; a hammer case, which is connected to the polymer housing and houses the hammer and the spindle; and a light unit, which is held on the hammer case and comprises a plurality of light-emitting devices. The maximum tightening torque of the anvil is 1,000 N·m or more and 2,500 N·m or less.
    Type: Grant
    Filed: November 30, 2022
    Date of Patent: August 5, 2025
    Assignee: MAKITA CORPORATION
    Inventors: Tokuo Hirabayashi, Haruki Tejima, Kazuma Aoki, Kazunori Kinoshita
  • Publication number: 20250235990
    Abstract: An impact tool includes: a brushless motor; a spindle, which is rotated by the brushless motor; a hammer, which is held on the spindle; an anvil, which is impacted in a rotational direction by the hammer; a polymer housing, which houses the brushless motor; a hammer case, which is connected to the polymer housing and houses the hammer and the spindle; and a light unit, which is held on the hammer case and comprises a plurality of light-emitting devices. The maximum tightening torque of the anvil is 1,000 N·m or more and 2,500 N·m or less.
    Type: Application
    Filed: April 10, 2025
    Publication date: July 24, 2025
    Inventors: Tokuo HIRABAYASHI, Haruki TEJIMA, Kazuma AOKI, Kazunori KINOSHITA
  • Publication number: 20250058436
    Abstract: An impact tool (1) includes: a motor (6) having a rotor (27) that is rotatable about a rotational axis (AX); a spindle (8) disposed forward of the stator and rotating when the rotor rotates; an anvil (10) having at least a portion disposed forward of the spindle and mounting a bit (300); a hammer (47), which rotatably impacts the anvil; and a housing (2), which has a motor-housing part (21) that houses the motor. The maximum tightening torque is 140 N·m or more. Overall length (La), which is the distance—in the front-rear direction parallel to the rotational axis—between a rear-end portion of the motor-housing part and a front-end portion of the anvil, is 100 mm or less. The hammer has a base portion, a front-side ring portion protruding forward from the base portion, and hammer projection portions protruding radially inward from the front ring portion.
    Type: Application
    Filed: October 7, 2024
    Publication date: February 20, 2025
    Inventors: Kazuma AOKI, Tomoro AOYAMA
  • Patent number: 12138753
    Abstract: An impact tool (1) includes: a motor (6) having a rotor (27) that is rotatable about a rotational axis (AX); a spindle (8) disposed forward of the stator and rotating when the rotor rotates; an anvil (10) having at least a portion disposed forward of the spindle and mounting a bit (300); a hammer (47), which rotatably impacts the anvil; and a housing (2), which has a motor-housing part (21) that houses the motor. The maximum tightening torque is 140 N·m or more. Overall length (La), which is the distance—in the front-rear direction parallel to the rotational axis—between a rear-end portion of the motor-housing part and a front-end portion of the anvil, is 100 mm or less. Center height Hc, which is the distance in the up-down direction between the rotational axis and an upper-end portion of the motor-housing part, is 29 mm or less.
    Type: Grant
    Filed: May 30, 2023
    Date of Patent: November 12, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Kazuma Aoki, Tomoro Aoyama
  • Patent number: 12138752
    Abstract: To improve operability it is desireable to decrease the size of an impact tool. The impact tool includes a motor, a spindle including a spindle shaft and a flange. An anvil of the tool includes an anvil shaft and an anvil projection. A hammer of the tool includes a base surrounding the spindle shaft, a front ring protruding frontward from an outer circumference of the base, and a hammer projection to strike the anvil projection in a rotation direction. The base has a groove at a boundary with the hammer projection. One of ordinary skill in the art would appreciate that the arrangement disclosed herein results in space savings that allows for overall decrease in the size of an impact too.
    Type: Grant
    Filed: April 26, 2023
    Date of Patent: November 12, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Kazuma Aoki, Tomoro Aoyama
  • Patent number: 12115625
    Abstract: An impact tool has less size increase. An impact tool includes a motor, a spindle, an anvil including an anvil shaft and an anvil projection, a hammer including a hammer projection to strike the anvil projection in a rotation direction, a hammer case accommodating the hammer, an anvil bearing held in the hammer case and surrounding the anvil shaft, and a cup washer facing a front surface of the anvil projection. The cup washer includes an inner ring portion in contact with a rear end face of the anvil bearing, an outer ring portion surrounding the anvil bearing, and a connecting ring portion connecting an outer edge of the inner ring portion and an inner edge of the outer ring portion.
    Type: Grant
    Filed: May 2, 2023
    Date of Patent: October 15, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Kazuma Aoki, Tomoro Aoyama
  • Publication number: 20240208013
    Abstract: An impact tool includes: a brushless motor; a spindle, which is rotated by the brushless motor; a hammer, which is held on the spindle; an anvil, which is impacted in a rotational direction by the hammer, a polymer housing, which houses the brushless motor; a hammer case, which is connected to the polymer housing and houses the hammer and the spindle; and a light unit, which is held on the hammer case and comprises a plurality of light-emitting devices. The maximum tightening torque of the anvil is 1,000 N·m or more and 2,500 N·m or less.
    Type: Application
    Filed: March 8, 2024
    Publication date: June 27, 2024
    Inventors: Tokuo HIRABAYASHI, Haruki TEJIMA, Kazuma AOKI, Kazunori KINOSHITA
  • Patent number: 11958170
    Abstract: An impact tool includes: a brushless motor; a spindle, which is rotated by the brushless motor; a hammer, which is held on the spindle; an anvil, which is impacted in a rotational direction by the hammer; a polymer housing, which houses the brushless motor; a hammer case, which is connected to the polymer housing and houses the hammer and the spindle; and a light unit, which is held on the hammer case and comprises a plurality of light-emitting devices. The maximum tightening torque of the anvil is 1,000 N·m or more and 2,500 N·m or less.
    Type: Grant
    Filed: November 30, 2022
    Date of Patent: April 16, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Tokuo Hirabayashi, Haruki Tejima, Kazuma Aoki, Kazunori Kinoshita
  • Publication number: 20230398663
    Abstract: An impact tool has less size increase. An impact tool includes a motor, a spindle, an anvil including an anvil shaft and an anvil projection, a hammer including a hammer projection to strike the anvil projection in a rotation direction, a hammer case accommodating the hammer, an anvil bearing held in the hammer case and surrounding the anvil shaft, and a cup washer facing a front surface of the anvil projection. The cup washer includes an inner ring portion in contact with a rear end face of the anvil bearing, an outer ring portion surrounding the anvil bearing, and a connecting ring portion connecting an outer edge of the inner ring portion and an inner edge of the outer ring portion.
    Type: Application
    Filed: May 2, 2023
    Publication date: December 14, 2023
    Applicant: MAKITA CORPORATION
    Inventors: Kazuma AOKI, Tomoro AOYAMA
  • Publication number: 20230398665
    Abstract: An impact tool (1) includes: a motor (6) having a rotor (27) that is rotatable about a rotational axis (AX); a spindle (8) disposed forward of the stator and rotating when the rotor rotates; an anvil (10) having at least a portion disposed forward of the spindle and mounting a bit (300); a hammer (47), which rotatably impacts the anvil; and a housing (2), which has a motor-housing part (21) that houses the motor. The maximum tightening torque is 140 N·m or more. Overall length (La), which is the distance—in the front-rear direction parallel to the rotational axis—between a rear-end portion of the motor-housing part and a front-end portion of the anvil, is 100 mm or less. Center height Hc, which is the distance in the up-down direction between the rotational axis and an upper-end portion of the motor-housing part, is 29 mm or less.
    Type: Application
    Filed: May 30, 2023
    Publication date: December 14, 2023
    Inventors: Kazuma AOKI, Tomoro AOYAMA
  • Publication number: 20230398662
    Abstract: An impact tool has less size increase. An impact tool includes a motor, a spindle including a spindle shaft and a flange, an anvil including an anvil shaft and an anvil projection, and a hammer including a base surrounding the spindle shaft, a front ring protruding frontward from an outer circumference of the base, and a hammer projection to strike the anvil projection in a rotation direction. The base has a groove at a boundary with the hammer projection.
    Type: Application
    Filed: April 26, 2023
    Publication date: December 14, 2023
    Applicant: MAKITA CORPORATION
    Inventors: Kazuma AOKI, Tomoro AOYAMA
  • Patent number: 11685260
    Abstract: A vehicle includes a display device that displays information indicating an operation state of an internal combustion engine. A display control device which is a control device that controls the display device includes an acquisition unit configured to acquire the operation state of the internal combustion engine. The display control device includes a display control unit that switches information which is displayed on the display device between a warm-up indicator for notifying that warm-up of the internal combustion engine is being performed and a warm-up completion indicator for notifying that warm-up of the internal combustion engine has been completed. The display control unit is configured to prohibit switching from the warm-up completion indicator to the warm-up indicator when the warm-up completion indicator is being displayed on the display device while the internal combustion engine is operating.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: June 27, 2023
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuma Aoki, Koji Hokoi, Yusuke Furuhashi
  • Publication number: 20230182270
    Abstract: An impact tool includes: a brushless motor; a spindle, which is rotated by the brushless motor; a hammer, which is held on the spindle; an anvil, which is impacted in a rotational direction by the hammer; a polymer housing, which houses the brushless motor; a hammer case, which is connected to the polymer housing and houses the hammer and the spindle; and a light unit, which is held on the hammer case and comprises a plurality of light-emitting devices. The maximum tightening torque of the anvil is 1,000 N·m or more and 2,500 N·m or less.
    Type: Application
    Filed: November 30, 2022
    Publication date: June 15, 2023
    Inventors: Tokuo HIRABAYASHI, Haruki TEJIMA, Kazuma AOKI, Kazunori KINOSHITA