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).
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Publication number: 20260200342Abstract: 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: ApplicationFiled: December 29, 2025Publication date: July 16, 2026Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuma AOKI, Takeshi Kitahata, Noritaka Takuda, Hiroto Amada, Tatsuya Kawamura, Takeshi Ishiwada
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Publication number: 20260200341Abstract: 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: ApplicationFiled: January 7, 2026Publication date: July 16, 2026Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuma AOKI, Takeshi ISHIWADA, Hiroto AMADA, Noritaka TAKUDA, Tatsuya KAWAMURA, Takeshi KITAHATA
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Publication number: 20260200337Abstract: 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: ApplicationFiled: January 2, 2026Publication date: July 16, 2026Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuma AOKI, Takeshi Ishiwada, Hiroto Amada, Noritaka Takuda, Tatsuya Kawamura, Takeshi Kitahata
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Publication number: 20260145583Abstract: 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: ApplicationFiled: November 24, 2025Publication date: May 28, 2026Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuma AOKI, Noritaka TAKUDA, Hiroto AMADA
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Publication number: 20260071991Abstract: 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: ApplicationFiled: June 28, 2023Publication date: March 12, 2026Applicants: KOA Corporation, Tokyo University of Science FoundationInventors: Toshiharu TAKAYAMA, Takahiro MATSUI, Yuko TAKEI, Kazuma AOKI, Shinichi KOMABA, Ryoichi TATARA, Kenta ISHIHARA
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Patent number: 12454037Abstract: 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: GrantFiled: October 7, 2024Date of Patent: October 28, 2025Assignee: MAKITA CORPORATIONInventors: Kazuma Aoki, Tomoro Aoyama
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Patent number: 12390909Abstract: 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: GrantFiled: March 8, 2024Date of Patent: August 19, 2025Assignee: MAKITA CORPORATIONInventors: Tokuo Hirabayashi, Haruki Tejima, Kazuma Aoki, Kazunori Kinoshita
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Patent number: 12377525Abstract: 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: GrantFiled: November 30, 2022Date of Patent: August 5, 2025Assignee: MAKITA CORPORATIONInventors: Tokuo Hirabayashi, Haruki Tejima, Kazuma Aoki, Kazunori Kinoshita
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Publication number: 20250235990Abstract: 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: ApplicationFiled: April 10, 2025Publication date: July 24, 2025Inventors: Tokuo HIRABAYASHI, Haruki TEJIMA, Kazuma AOKI, Kazunori KINOSHITA
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Publication number: 20250058436Abstract: 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: ApplicationFiled: October 7, 2024Publication date: February 20, 2025Inventors: Kazuma AOKI, Tomoro AOYAMA
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Patent number: 12138753Abstract: 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: GrantFiled: May 30, 2023Date of Patent: November 12, 2024Assignee: MAKITA CORPORATIONInventors: Kazuma Aoki, Tomoro Aoyama
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Patent number: 12138752Abstract: 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: GrantFiled: April 26, 2023Date of Patent: November 12, 2024Assignee: MAKITA CORPORATIONInventors: Kazuma Aoki, Tomoro Aoyama
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Patent number: 12115625Abstract: 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: GrantFiled: May 2, 2023Date of Patent: October 15, 2024Assignee: MAKITA CORPORATIONInventors: Kazuma Aoki, Tomoro Aoyama
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Publication number: 20240208013Abstract: 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: ApplicationFiled: March 8, 2024Publication date: June 27, 2024Inventors: Tokuo HIRABAYASHI, Haruki TEJIMA, Kazuma AOKI, Kazunori KINOSHITA
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Patent number: 11958170Abstract: 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: GrantFiled: November 30, 2022Date of Patent: April 16, 2024Assignee: MAKITA CORPORATIONInventors: Tokuo Hirabayashi, Haruki Tejima, Kazuma Aoki, Kazunori Kinoshita
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Publication number: 20230398663Abstract: 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: ApplicationFiled: May 2, 2023Publication date: December 14, 2023Applicant: MAKITA CORPORATIONInventors: Kazuma AOKI, Tomoro AOYAMA
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Publication number: 20230398665Abstract: 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: ApplicationFiled: May 30, 2023Publication date: December 14, 2023Inventors: Kazuma AOKI, Tomoro AOYAMA
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Publication number: 20230398662Abstract: 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: ApplicationFiled: April 26, 2023Publication date: December 14, 2023Applicant: MAKITA CORPORATIONInventors: Kazuma AOKI, Tomoro AOYAMA
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Patent number: 11685260Abstract: 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: GrantFiled: October 29, 2020Date of Patent: June 27, 2023Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kazuma Aoki, Koji Hokoi, Yusuke Furuhashi
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Publication number: 20230182270Abstract: 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: ApplicationFiled: November 30, 2022Publication date: June 15, 2023Inventors: Tokuo HIRABAYASHI, Haruki TEJIMA, Kazuma AOKI, Kazunori KINOSHITA