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).
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Patent number: 12120982Abstract: 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: GrantFiled: July 21, 2021Date of Patent: October 22, 2024Assignee: Kubota CorporationInventors: Katsuhiko Uemura, Hirokazu Ito, Kazuaki Matsuda, Yasuhiro Manji
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Publication number: 20240188485Abstract: 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: ApplicationFiled: February 20, 2024Publication date: June 13, 2024Inventors: Kazuaki Matsuda, Katsuhiko Uemura, Yasuhiro Manji, Ryo Ikeda
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Patent number: 11937538Abstract: 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: GrantFiled: April 9, 2019Date of Patent: March 26, 2024Assignee: Kubota CorporationInventors: Kazuaki Matsuda, Katsuhiko Uemura, Yasuhiro Manji, Ryo Ikeda
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Publication number: 20230225248Abstract: 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: ApplicationFiled: March 23, 2023Publication date: July 20, 2023Inventors: Hirokazu Ito, Katsuhiko Uemura, Kazuaki Matsuda
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Patent number: 11632906Abstract: 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: GrantFiled: November 19, 2019Date of Patent: April 25, 2023Assignee: Kubota CorporationInventors: Hirokazu Ito, Katsuhiko Uemura, Kazuaki Matsuda
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Patent number: 11589505Abstract: 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: GrantFiled: June 8, 2020Date of Patent: February 28, 2023Assignee: Kubota CorporationInventors: Kazuaki Matsuda, Hirokazu Ito
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Patent number: 11582909Abstract: 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: GrantFiled: October 30, 2019Date of Patent: February 21, 2023Assignee: Kubota CorporationInventors: Hirokazu Ito, Kazuaki Matsuda
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Patent number: 11529940Abstract: 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: GrantFiled: May 14, 2019Date of Patent: December 20, 2022Assignee: Kubota CorporationInventors: Kazuaki Matsuda, Yasuhiro Manji
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Patent number: 11490562Abstract: 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: GrantFiled: April 29, 2019Date of Patent: November 8, 2022Assignee: Kubota CorporationInventors: Kazuaki Matsuda, Katsuhiko Uemura
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Patent number: 11486420Abstract: 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: GrantFiled: November 7, 2019Date of Patent: November 1, 2022Assignee: Kubota CorporationInventors: Katsuhiko Uemura, Hirokazu Ito, Yasuhiro Manji, Kazuaki Matsuda
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Patent number: 11485212Abstract: 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: GrantFiled: June 10, 2020Date of Patent: November 1, 2022Assignee: Kubota CorporationInventors: Hirokazu Ito, Junichi Yamanaka, Kazuaki Matsuda
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Publication number: 20220282769Abstract: 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: ApplicationFiled: March 1, 2022Publication date: September 8, 2022Applicant: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Shogo KOBAYASHI, Yuya SHINDO, Kazuaki MATSUDA, Takayuki OKUBO
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Patent number: 11433771Abstract: 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: GrantFiled: October 23, 2020Date of Patent: September 6, 2022Assignee: Kubota CorporationInventors: Kazuaki Matsuda, Hirokazu Ito, Yasuhiro Manji
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Publication number: 20220243786Abstract: 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: ApplicationFiled: January 21, 2022Publication date: August 4, 2022Applicant: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Yuya SHINDO, Shogo KOBAYASHI, Kazuaki MATSUDA
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Patent number: 11388372Abstract: 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: GrantFiled: January 21, 2021Date of Patent: July 12, 2022Assignee: NUVOTON TECHNOLOGY CORPORATION JAPANInventors: Makoto Atoji, Tomohito Nagata, Noritaka Shimizu, Kazuaki Matsuda
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Patent number: 11273716Abstract: 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: GrantFiled: October 29, 2019Date of Patent: March 15, 2022Assignee: Kubota CorporationInventors: Kazuaki Matsuda, Hirokazu Ito, Masahiro Yamada, Tomohiko Hisakuni
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Patent number: 11247652Abstract: 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: GrantFiled: June 7, 2019Date of Patent: February 15, 2022Assignee: Kubota CorporationInventors: Kazuaki Matsuda, Hirokazu Ito
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Publication number: 20210345550Abstract: 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: ApplicationFiled: July 21, 2021Publication date: November 11, 2021Inventors: Katsuhiko Uemura, Hirokazu Ito, Kazuaki Matsuda, Yasuhiro Manji
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Patent number: 11102928Abstract: 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: GrantFiled: June 15, 2018Date of Patent: August 31, 2021Assignee: Kubota CorporationInventors: Katsuhiko Uemura, Hirokazu Ito, Kazuaki Matsuda, Yasuhiro Manji
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Publication number: 20210144339Abstract: 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: ApplicationFiled: January 21, 2021Publication date: May 13, 2021Inventors: Makoto ATOJI, Tomohito Nagata, Noritaka Shimizu, Kazuaki Matsuda