Patents by Inventor Kazuaki Matsuda

Kazuaki Matsuda 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: 12120982
    Abstract: An electric work vehicle includes: a battery accommodating portion that is provided in the vehicle body and accommodates a battery; a first connector provided on the battery accommodating portion; a second connector provided on the battery; and an operating tool for moving the battery and the second connector, and switching from a pre-attachment orientation in which the second connector opposes the first connector to an attachment orientation in which the second connector is joined to the first connector.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: October 22, 2024
    Assignee: Kubota Corporation
    Inventors: Katsuhiko Uemura, Hirokazu Ito, Kazuaki Matsuda, Yasuhiro Manji
  • Publication number: 20240188485
    Abstract: An object of the present invention is to provide a work vehicle that can be controlled automatically. The work vehicle includes HST's for feeding power for traveling to at least either front wheels or rear wheels mounted on a traveling vehicle body, traveling levers for operating driving of at least either the front wheels or the rear wheel, traveling links operably coupling the traveling levers with the HST's, traveling drive sections for driving either the traveling levers or the traveling links, and a traveling control section configured to activate the traveling drive sections in response to receipt of a traveling instruction for the traveling levers in the automatic control mode for automatically controlling the traveling vehicle body.
    Type: Application
    Filed: February 20, 2024
    Publication date: June 13, 2024
    Inventors: Kazuaki Matsuda, Katsuhiko Uemura, Yasuhiro Manji, Ryo Ikeda
  • Patent number: 11937538
    Abstract: An object of the present invention is to provide a work vehicle that can be controlled automatically. The work vehicle includes HST's for feeding power for traveling to at least either front wheels or rear wheels mounted on a traveling vehicle body, traveling levers for operating driving of at least either the front wheels or the rear wheel, traveling links operably coupling the traveling levers with the HST's, traveling drive sections for driving either the traveling levers or the traveling links, and a traveling control section configured to activate the traveling drive sections in response to receipt of a traveling instruction for the traveling levers in the automatic control mode for automatically controlling the traveling vehicle body.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: March 26, 2024
    Assignee: Kubota Corporation
    Inventors: Kazuaki Matsuda, Katsuhiko Uemura, Yasuhiro Manji, Ryo Ikeda
  • Publication number: 20230225248
    Abstract: In an electric grass cutting machine relating to the present invention, an electric motor for driving a traveling device having a pair of left and right front wheels and a pair of left and right rear wheels and a gear transmission for speed-changing output from the electric motor and transmitting the resultant power to the traveling device are disposed between the left and right rear wheels and arranged one after the other in the front/rear direction at positions laterally of a conveying duct for guiding cut grass pieces from a rear discharge type mower device to a grass collecting container supported to a rear portion of a machine body frame.
    Type: Application
    Filed: March 23, 2023
    Publication date: July 20, 2023
    Inventors: Hirokazu Ito, Katsuhiko Uemura, Kazuaki Matsuda
  • Patent number: 11632906
    Abstract: In an electric grass cutting machine relating to the present invention, an electric motor for driving a traveling device having a pair of left and right front wheels and a pair of left and right rear wheels and a gear transmission for speed-changing output from the electric motor and transmitting the resultant power to the traveling device are disposed between the left and right rear wheels and arranged one after the other in the front/rear direction at positions laterally of a conveying duct for guiding cut grass pieces from a rear discharge type mower device to a grass collecting container supported to a rear portion of a machine body frame.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: April 25, 2023
    Assignee: Kubota Corporation
    Inventors: Hirokazu Ito, Katsuhiko Uemura, Kazuaki Matsuda
  • Patent number: 11589505
    Abstract: A housing holding parts includes a plurality of outer circumferential plates connected with each other to form a first enclosed space, one or more of the outer circumferential plates having a total of two or more outer holes formed therein, and a gutter member connected to at least two outer circumferential plates, the gutter member having an inner hole formed therein, wherein a second enclosed space is formed by the outer circumferential plates and the gutter member, the outer holes communicate with the second enclosed space, and the inner hole is provided to be offset from each of the lines passing through each of the outer holes which are perpendicular to the outer circumferential plates in which the outer holes 8 are formed.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: February 28, 2023
    Assignee: Kubota Corporation
    Inventors: Kazuaki Matsuda, Hirokazu Ito
  • Patent number: 11582909
    Abstract: The mower unit includes a mower deck having a top wall and side walls extending downwards from an outer circumferential edge of the top wall, a rotational shaft extending upwards through the top wall from an inside space formed by the top wall and the side walls, a cutter blade attached to a lower portion of the rotational shaft within the inside space and rotatable together with the rotational shaft, an electric mower motor having an output shaft that can rotatably drive the rotational shaft, and a flywheel rotatable in association with the rotational driving of the mower motor.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: February 21, 2023
    Assignee: Kubota Corporation
    Inventors: Hirokazu Ito, Kazuaki Matsuda
  • Patent number: 11529940
    Abstract: Provided is an electric power control device that allows a work vehicle to travel while carrying out a utility work smoothly. An electric power control device includes an operational state information acquisition section for acquiring operational state information indicative of an operational state of a work vehicle, a battery information acquisition section for acquiring battery information indicative of a state of a battery which is mounted on the work vehicle, a storage section for storing in advance operational mode information, a travel unit that causes the work vehicle to travel, a distributed electric power calculation section for calculating distributed electric powers to be distributed to the travel unit and an implement unit that effects the utility work respectively, and an instruction section for instructing the distributed electric powers to a travel control section that controls the travel unit and an implement control section that controls the implement unit, respectively.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: December 20, 2022
    Assignee: Kubota Corporation
    Inventors: Kazuaki Matsuda, Yasuhiro Manji
  • Patent number: 11490562
    Abstract: A work evaluation system configured to effect evaluation of a grass mowing work performed by a work vehicle includes a state information acquisition section for acquiring vehicle state information indicative of a state of the work vehicle when performing the grass mowing work, a sound data acquisition section for acquiring sound data comprised of collection of sounds around the work vehicle, a foreign object amount calculation section for calculating an amount of foreign objects present in the work land which come into contact with a mowing blade in the course of the grass mowing work and an evaluation section for evaluating the grass mowing work performed in the work land, based on the vehicle state information and the foreign object amount.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: November 8, 2022
    Assignee: Kubota Corporation
    Inventors: Kazuaki Matsuda, Katsuhiko Uemura
  • Patent number: 11486420
    Abstract: Provided is an electric work vehicle having a simple configuration, yet allowing a hydraulic cylinder to function appropriately even in a low-temperature environment. An electric work vehicle includes a first hydraulic cylinder, a second hydraulic cylinder and a third hydraulic cylinder and includes also a hydraulic system for feeding work oil to these hydraulic cylinders and a traveling motor. The hydraulic system includes an oil heating circuit for heating the work oil using heat generated from the traveling motor.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: November 1, 2022
    Assignee: Kubota Corporation
    Inventors: Katsuhiko Uemura, Hirokazu Ito, Yasuhiro Manji, Kazuaki Matsuda
  • Patent number: 11485212
    Abstract: In an electric work vehicle, a power feeding assembly which connects a battery device to a power controller unit so as to feed power includes a fixed connector which is fixed to the battery device and electrically connected to the battery device, a cable harness connected to a power controller unit, and a free connector which is connected to an end of the cable harness and connectable to a fixed connector, and a connecting operation tool is configured to be movable the free connector between the connecting position in which the free connector is connected to the fixed connector and the detaching position.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: November 1, 2022
    Assignee: Kubota Corporation
    Inventors: Hirokazu Ito, Junichi Yamanaka, Kazuaki Matsuda
  • Publication number: 20220282769
    Abstract: A V-ribbed belt includes a plurality of V-shaped ribs, each of the plurality of V-shaped ribs includes a V-shaped rib body formed from a crosslinked rubber composition and a fiber member covering a surface of the V-shaped rib body, the crosslinked rubber composition is a crosslinked product of an uncrosslinked rubber composition containing a rubber component, a crosslinking agent, and at least either an unsaturated carboxylic acid metal salt or a maleimide compound, and a total amount of the unsaturated carboxylic acid metal salt and the maleimide compound per 100 parts by mass of the rubber component is 1 to 40 parts by mass.
    Type: Application
    Filed: March 1, 2022
    Publication date: September 8, 2022
    Applicant: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Shogo KOBAYASHI, Yuya SHINDO, Kazuaki MATSUDA, Takayuki OKUBO
  • Patent number: 11433771
    Abstract: An electric travelling vehicle including: a motor controller configured to control an electric motor based on displacement of a steering operation part to a forward travel position, a neutral position, and a rearward travel position, a brake controller configured to bring an electromagnetic power-off brake into a released state or a braking state; and a travel state detector configured to detect a travelling state that is accompanied with the released state, a stopped state that is accompanied with the braking state, and a transit stopped state that is accompanied with the braking state.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: September 6, 2022
    Assignee: Kubota Corporation
    Inventors: Kazuaki Matsuda, Hirokazu Ito, Yasuhiro Manji
  • Publication number: 20220243786
    Abstract: A friction transmission belt includes a compression layer forming a pulley contact portion, the compression layer includes an inner layer formed from a rubber composition and an outer layer provided on a pulley contact side of the inner layer and formed from a fiber member, and a ratio (M10 modulus/M50 modulus) of an modulus at 10% elongation in a belt longitudinal direction (M10 modulus) to an modulus at 50% elongation in the belt longitudinal direction (M50 modulus), of the rubber composition, is not less than 1.5.
    Type: Application
    Filed: January 21, 2022
    Publication date: August 4, 2022
    Applicant: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Yuya SHINDO, Shogo KOBAYASHI, Kazuaki MATSUDA
  • Patent number: 11388372
    Abstract: A biological state detecting apparatus which generates biological information of a person, light sources which emit light having a first wavelength and light having a second wavelength, respectively, an imaging device which receives reflected light of the emitted light, a controller which controls the light sources, an arithmetic operator which reads out a first image and a second image from the imaging device and performs an arithmetic operation thereon, and a state estimator which generates the biological information of the person. The arithmetic operator generates a distance image based on the first image and the second image.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: July 12, 2022
    Assignee: NUVOTON TECHNOLOGY CORPORATION JAPAN
    Inventors: Makoto Atoji, Tomohito Nagata, Noritaka Shimizu, Kazuaki Matsuda
  • Patent number: 11273716
    Abstract: An electric work vehicle includes a vehicle body having traveling wheels, a traveling motor capable of driving the traveling wheels, and a battery unit having, at one end portion thereof, a pair of left and right leg wheels, the battery unit being detachably attachable to a battery storage section of the vehicle body and being capable of supplying electric power to the traveling motor. The battery unit, when detached from the battery storage section, is posture-switchable between a flat placement state in which the leg wheels and the other end portion thereof opposite to the side on which the leg wheels are located are placed in contact with the ground surface and a tilted posture in which the battery unit can stand on its own with the other end portion thereof being located higher than the leg wheels.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: March 15, 2022
    Assignee: Kubota Corporation
    Inventors: Kazuaki Matsuda, Hirokazu Ito, Masahiro Yamada, Tomohiko Hisakuni
  • Patent number: 11247652
    Abstract: Provided is a non-excitation operable electromagnetic brake that includes a manually operable rotary cam for switching over a rotor to a brake releasing state, but that allows easy recognition of switchover to the brake released state via an operation reaction force and that also allows reliable keeping of the rotary cam under its acting state. Even when an electromagnet is under a non-excited state, when a rotary cam is rotatably operated to an acting position, an acting portion of the rotary cam slidably operates a rotor via a releasing plate to a brake releasing state against springs. The acting portion of the rotary cam is formed linear along a tangent at a center of the acting portion with respect to a rotary cam rotational direction.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: February 15, 2022
    Assignee: Kubota Corporation
    Inventors: Kazuaki Matsuda, Hirokazu Ito
  • Publication number: 20210345550
    Abstract: An electric work vehicle includes: a battery accommodating portion that is provided in the vehicle body and accommodates a battery; a first connector provided on the battery accommodating portion; a second connector provided on the battery; and an operating tool for moving the battery and the second connector, and switching from a pre-attachment orientation in which the second connector opposes the first connector to an attachment orientation in which the second connector is joined to the first connector.
    Type: Application
    Filed: July 21, 2021
    Publication date: November 11, 2021
    Inventors: Katsuhiko Uemura, Hirokazu Ito, Kazuaki Matsuda, Yasuhiro Manji
  • Patent number: 11102928
    Abstract: An electric work vehicle includes: a battery accommodating portion that is provided in the vehicle body and accommodates a battery; a first connector provided on the battery accommodating portion; a second connector provided on the battery; and an operating tool for moving the battery and the second connector, and switching from a pre-attachment orientation in which the second connector opposes the first connector to an attachment orientation in which the second connector is joined to the first connector.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: August 31, 2021
    Assignee: Kubota Corporation
    Inventors: Katsuhiko Uemura, Hirokazu Ito, Kazuaki Matsuda, Yasuhiro Manji
  • Publication number: 20210144339
    Abstract: A biological state detecting apparatus which generates biological information of a person, light sources which emit light having a first wavelength and light having a second wavelength, respectively, an imaging device which receives reflected light of the emitted light, a controller which controls the light sources, an arithmetic operator which reads out a first image and a second image from the imaging device and performs an arithmetic operation thereon, and a state estimator which generates the biological information of the person. The arithmetic operator generates a distance image based on the first image and the second image.
    Type: Application
    Filed: January 21, 2021
    Publication date: May 13, 2021
    Inventors: Makoto ATOJI, Tomohito Nagata, Noritaka Shimizu, Kazuaki Matsuda