Patents by Inventor Kazuki UEDA
Kazuki UEDA 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: 20240101840Abstract: An object is to obtain a white ink which is easy to redisperse and is redispersible by being shaken several tens of times with weak force at most, or alternatively, without being shaken. As a solution, a white ink composition is provided which contains 5.0 to 20.0% by mass of a titanium oxide in an ink composition; 3.0 to 60.0 parts by mass of a solid content of alkali-soluble resin relative to 100 parts by mass of a pigment or pigments in the ink composition, wherein building blocks of the alkali-soluble resin are styrene; stearyl acrylate and/or lauryl acrylate; and acrylic acid, and the alkali-soluble resin has a weight-average molecular weight of 10,000 or more, an acid value of 100 mgKOH/g or more, and a glass transition temperature of 50° C. or more; and a surfactant.Type: ApplicationFiled: November 18, 2021Publication date: March 28, 2024Inventors: Hirohito MAEDA, Kazuki MORIYASU, Eri UEDA, Takaaki SANO, Choiwing CHAU
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Publication number: 20240088385Abstract: In general, according to one embodiment, a niobium-titanium oxide is provided. The niobium-titanium oxide satisfies Formulae (1) to (3) below in an L*a*b* color space according to Japanese Industrial Standard JIS Z 8722:2009: 95.0?L*?100??(1) ?1.0?a*?1.0??(2) ?1.0?b*?6.0??(3).Type: ApplicationFiled: February 16, 2023Publication date: March 14, 2024Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yoshiaki MURATA, Kakuya UEDA, Yasuhiro HARADA, Kazuki ISE, Norio TAKAMI
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Patent number: 11891780Abstract: A working machine includes a prime mover, a traveling pump configured to deliver hydraulic fluid at a flow rate corresponding to an angle of the swashplate, a traveling motor configured to be rotated by the hydraulic fluid delivered from the traveling pump so as to have a rotation speed shiftable between a first speed and a second speed higher than the first speed, a traveling change-over valve shiftable between a first state to set the rotation speed of the traveling motor to the first speed and a second state to set the rotation speed of the traveling motor to the second speed, an operation device, an operation valve configured to change the angle of the swashplate of the traveling pump according to operation of the operation device, an actuation valve provided upstream or downstream of the operation valve and fluidly connected to the operation valve, and a controller configured or programmed to output a control signal to control the actuation valve in such a way that, when the traveling change-over valve iType: GrantFiled: August 9, 2021Date of Patent: February 6, 2024Assignee: KUBOTA CORPORATIONInventors: Yuji Fukuda, Ryota Hamamoto, Jun Tomita, Yuya Konishi, Kazuki Ueda
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Patent number: 11845518Abstract: A small planing watercraft includes: a body including a storage box and a lid, the storage box including an opening, the lid releasably closing the opening; an opening and closing sensor detecting opening and closing of the lid; and processing circuitry determining whether the lid is open based on a result of detection of the opening and closing sensor, and, when determining that the lid is open, outputting a signal indicating that the lid is open.Type: GrantFiled: November 15, 2021Date of Patent: December 19, 2023Assignee: Kawasaki Motors, Ltd.Inventors: Yoshinobu Uozumi, Hideaki Ebisui, Kazuki Ueda
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Patent number: 11814815Abstract: A working machine includes a prime mover, a traveling motor a speed shifting valve configured to shift an output speed of the traveling motor between a first speed and a second speed faster than the first speed, an actuation valve to change a hydraulic pressure applied to the speed shifting valve, a brake shiftable between a braking state to brake the traveling motor and a braking releasing state to release the braking, and a controller configured or programmed to control the actuation valve and the brake, and being capable of activate a warm-up mode. The controller, when activating the warm-up mode, shifts the brake into the braking state, and controls the actuation valve so as to make the hydraulic pressure applied to the speed shifting valve equal to or greater than a value corresponding to the second speed.Type: GrantFiled: August 5, 2021Date of Patent: November 14, 2023Assignee: KUBOTA CORPORATIONInventors: Yuji Fukuda, Kohei Nagao, Hiroaki Nakagawa, Ryota Hamamoto, Kazuki Ueda, Yudai Koga, Kohei Kurachi
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Patent number: 11796056Abstract: A working machine includes: a machine body provided thereon with a traveling pump and a traveling motor; a traveling change-over valve shiftable between a first state where a rotation speed of the traveling motor is set to a first speed and a second state where the rotation speed is set to a second speed; an actuation valve operable to control a flow of operation fluid to an operation valve that changes a pressure of operation fluid to be applied to the traveling pump according to operation of an operation member; and a controller to perform a shock-mitigation control for reducing an opening degree of the actuation valve when the traveling change-over valve is shifted from the first state to the second state. The controller determines a reduction amount of the opening degree of the actuation valve reduced by the shock-mitigation control, based on a straight-traveling degree of the machine body.Type: GrantFiled: March 8, 2023Date of Patent: October 24, 2023Assignee: KUBOTA CORPORATIONInventors: Ryota Hamamoto, Kazuki Ueda, Daiki Abe, Kohei Nagao
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Publication number: 20230228062Abstract: A working machine includes a controller that performs shift shock reduction control when shift-down switching from a second state to a first state, in which a motor speed can be increased up to a first maximum speed lower than a second maximum speed available in the second state, is performed. The controller includes a first processor configured to, based on a drop amount that is a difference between target and actual numbers of revolutions of a prime mover, compute a first reduction amount for reducing an amount of hydraulic fluid supply from a traveling pump to a traveling motor, a second processor configured to compute a second reduction amount based on a degree of straight traveling of a machine body, and a reduction controller configured to, based on the first or second reduction amount, whichever is larger in absolute value, perform the shift shock reduction control.Type: ApplicationFiled: December 6, 2022Publication date: July 20, 2023Applicant: KUBOTA CORPORATIONInventors: Ryota HAMAMOTO, Kazuki UEDA, Daiki ABE
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Publication number: 20230220913Abstract: A working machine includes: a machine body provided thereon with a traveling pump and a traveling motor; a traveling change-over valve shiftable between a first state where a rotation speed of the traveling motor is set to a first speed and a second state where the rotation speed is set to a second speed; an actuation valve operable to control a flow of operation fluid to an operation valve that changes a pressure of operation fluid to be applied to the traveling pump according to operation of an operation member; and a controller to perform a shock-mitigation control for reducing an opening degree of the actuation valve when the traveling change-over valve is shifted from the first state to the second state. The controller determines a reduction amount of the opening degree of the actuation valve reduced by the shock-mitigation control, based on a straight-traveling degree of the machine body.Type: ApplicationFiled: March 8, 2023Publication date: July 13, 2023Applicant: KUBOTA CORPORATIONInventors: Ryota HAMAMOTO, Kazuki UEDA, Daiki ABE, Kohei NAGAO
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Publication number: 20230203782Abstract: A working machine includes first and second traveling pumps, an acquirer to acquire the number of revolutions and the rotation direction of each of first and second traveling motors, a determiner to, based on the acquired number of revolutions and the acquired rotation direction, determine whether a machine body is in a straight traveling state or a turn traveling state, and a controller configured or programmed to, when switching from a first state allowing rotation speeds of the first and second traveling motors to increase up to a first maximum speed, to a second state allowing the rotation speeds to increase up to a second maximum speed higher than the first maximum speed, or vice versa, is performed, reduce an amount of hydraulic fluid supply from the pumps to the motors according to the straight traveling state or the turn traveling state of the machine body.Type: ApplicationFiled: December 5, 2022Publication date: June 29, 2023Applicant: KUBOTA CORPORATIONInventors: Kazuki UEDA, Keisuke NAITO, Ryota HAMAMOTO
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Publication number: 20230193595Abstract: In a working machine, a controller decreases a supply amount of hydraulic fluid from a travel pump to a travel motor based on a travel state of a machine body when a speed-change instruction is issued by operating a switch. When a speed-increase operation is performed, the controller switches the travel switching valve from the first state to the second state in a prior period lasting up to when the supply amount to the travel motor starts decreasing, in a restoration period in which the supply amount to the travel motor after being decreased is being restored, or in an after-restoration period in which the supply amount has been restored.Type: ApplicationFiled: December 2, 2022Publication date: June 22, 2023Applicant: KUBOTA CORPORATIONInventors: Kazuki UEDA, Yuji FUKUDA, Ryota HAMAMOTO
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Publication number: 20230193596Abstract: In a working machine, a controller decreases a supply amount of a hydraulic fluid from a travel pump to a travel motor based on a travel state of a machine body when a speed-change instruction of increasing or decreasing speed is output by operating a switch, and a pressure detector detects a travel pressure that is a pressure of a hydraulic fluid delivered by the travel pump to the travel motor. In accordance with the travel pressure detected by the travel pressure detector, the controller changes a delay period lasting up to a switching timing of the travel switching valve from an output timing of the speed-change instruction of the switch.Type: ApplicationFiled: December 5, 2022Publication date: June 22, 2023Applicant: KUBOTA CORPORATIONInventors: Kazuki UEDA, Yuji FUKUDA, Ryota HAMAMOTO
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Publication number: 20230150611Abstract: A small planing watercraft includes: a body including a storage box and a lid, the storage box including an opening, the lid releasably closing the opening; an opening and closing sensor detecting opening and closing of the lid; and processing circuitry determining whether the lid is open based on a result of detection of the opening and closing sensor, and, when determining that the lid is open, outputting a signal indicating that the lid is open.Type: ApplicationFiled: November 15, 2021Publication date: May 18, 2023Applicant: Kawasaki Motors, Ltd.Inventors: Yoshinobu UOZUMI, Hideaki EBISUI, Kazuki UEDA
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Patent number: 11635141Abstract: In a working machine, a traveling pump is driven by a prime mover to rotate a traveling motor by fluid therefrom. The traveling motor has a rotation speed shiftable between a lower first speed and a higher second speed. A traveling change-over valve is shiftable between a first state where the rotation speed of the traveling motor is set to the first speed and a second state where the rotation speed of the traveling motor is set to the second speed. A controller performs a shock-mitigation for reducing a rotation speed of the prime mover when the traveling change-over valve is shifted from the second state to the first state. The controller determines a reduction amount of rotation speed of the prime mover reduced by the shock mitigation based on a difference between a target rotation speed of the prime mover and an actual rotation speed of the prime mover.Type: GrantFiled: August 5, 2021Date of Patent: April 25, 2023Assignee: KUBOTA CORPORATIONInventors: Ryota Hamamoto, Kazuki Ueda, Daiki Abe, Kohei Nagao
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Publication number: 20230097457Abstract: A small planing watercraft includes: a travel electrical component driven for travel of the small planing watercraft; an accessory electrical component provided separately from the travel electrical component; a battery supplying power to the travel electrical component and the accessory electrical component; a sensor detecting a physical quantity corresponding to a level of the battery; and processing circuitry determining, based on a result of detection of the sensor, whether the level of the battery is a predetermined power saving level, and controlling, when it is determined that the level of the battery is the power saving level, operation of the accessory electrical component so that power consumed by the accessory electrical component is less than that before determination.Type: ApplicationFiled: September 28, 2021Publication date: March 30, 2023Applicant: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshinobu UOZUMI, Masaaki MIYOSHI, Kazuki UEDA
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Patent number: 11353048Abstract: A working machine includes a fan motor driven with hydraulic fluid, the fan motor including a first port and a second port, a bypass fluid passage connecting the first port of the fan motor and the second port to each other, a flow rate control valve provided on the bypass fluid passage to control a flow rate of the hydraulic fluid flowing in the bypass fluid passage, a drain passage configured to drain the hydraulic fluid upstream of the flow rate control valve, and an unloading valve shiftable between a full-closing position to close the drain passage and a full-opening position to open the drain passage.Type: GrantFiled: August 6, 2021Date of Patent: June 7, 2022Assignee: KUBOTA CORPORATIONInventors: Yuji Fukuda, Daiki Abe, Ryota Hamamoto, Kazuki Ueda, Kohei Kurachi, Yuya Konishi, Masaki Inaoka, Yasushi Otagaki, Yuya Tanabe
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Publication number: 20220049465Abstract: A working machine includes a prime mover, a traveling pump configured to deliver hydraulic fluid at a flow rate corresponding to an angle of the swashplate, a traveling motor configured to be rotated by the hydraulic fluid delivered from the traveling pump so as to have a rotation speed shiftable between a first speed and a second speed higher than the first speed, a traveling change-over valve shiftable between a first state to set the rotation speed of the traveling motor to the first speed and a second state to set the rotation speed of the traveling motor to the second speed, an operation device, an operation valve configured to change the angle of the swashplate of the traveling pump according to operation of the operation device, an actuation valve provided upstream or downstream of the operation valve and fluidly connected to the operation valve, and a controller configured or programmed to output a control signal to control the actuation valve in such a way that, when the traveling change-over valve iType: ApplicationFiled: August 9, 2021Publication date: February 17, 2022Applicant: KUBOTA CORPORATIONInventors: Yuji FUKUDA, Ryota HAMAMOTO, Jun TOMITA, Yuya KONISHI, Kazuki UEDA
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Publication number: 20220049723Abstract: In a working machine, a traveling pump is driven by a prime mover to rotate a traveling motor by fluid therefrom. The traveling motor has a rotation speed shiftable between a lower first speed and a higher second speed. A traveling change-over valve is shiftable between a first state where the rotation speed of the traveling motor is set to the first speed and a second state where the rotation speed of the traveling motor is set to the second speed. A controller performs a shock-mitigation for reducing a rotation speed of the prime mover when the traveling change-over valve is shifted from the second state to the first state. The controller determines a reduction amount of rotation speed of the prime mover reduced by the shock mitigation based on a difference between a target rotation speed of the prime mover and an actual rotation speed of the prime mover.Type: ApplicationFiled: August 5, 2021Publication date: February 17, 2022Applicant: KUBOTA CORPORATIONInventors: Ryota HAMAMOTO, Kazuki UEDA, Daiki ABE, Kohei NAGAO
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Publication number: 20220049464Abstract: A working machine includes a fan motor driven with hydraulic fluid, the fan motor including a first port and a second port, a bypass fluid passage connecting the first port of the fan motor and the second port to each other, a flow rate control valve provided on the bypass fluid passage to control a flow rate of the hydraulic fluid flowing in the bypass fluid passage, a drain passage configured to drain the hydraulic fluid upstream of the flow rate control valve, and an unloading valve shiftable between a full-closing position to close the drain passage and a full-opening position to open the drain passage.Type: ApplicationFiled: August 6, 2021Publication date: February 17, 2022Applicant: KUBOTA CORPORATIONInventors: Yuji FUKUDA, Daiki ABE, Ryota HAMAMOTO, Kazuki UEDA, Kohei KURACHI, Yuya KONISHI, Masaki INAOKA, Yasushi OTAGAKI, Yuya TANABE
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Publication number: 20220049466Abstract: A working machine includes a prime mover, a traveling device, a traveling motor configured to output power to the traveling device, a speed shifting valve configured to shift an output speed of the traveling motor between a first speed and a second speed faster than the first speed, an actuation valve configured to change a hydraulic pressure applied to the speed shifting valve, a first fluid passage fluidly connected to the speed shifting valve so that hydraulic fluid having the hydraulic pressure to be applied to the speed shifting valve flows through the first fluid passage, a drain fluid passage fluidly connected to the first fluid passage, a brake shiftable between a braking state to brake the traveling motor and a braking releasing state to release the braking, and a controller configured or programmed to control the actuation valve and the brake, and being capable of activate a warm-up mode.Type: ApplicationFiled: August 5, 2021Publication date: February 17, 2022Applicant: KUBOTA CORPORATIONInventors: Yuji FUKUDA, Kohei NAGAO, Hiroaki NAKAGAWA, Ryota HAMAMOTO, Kazuki UEDA, Yudai KOGA, Kohei KURACHI