Patents by Inventor Junki Ito
Junki Ito 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: 20260106567Abstract: An electric working machine includes a battery assembly, an electric actuator to be actuated by electricity supplied by the battery assembly, a working device to be actuated by the electric actuator being driven, a plurality of temperature detectors to each detect a temperature of the battery assembly, a controller configured or programmed to calculate a first temperature of the battery assembly based on temperatures detected by the plurality of temperature detectors, and a display to display the first temperature calculated by the controller. The controller is configured or programmed to calculate the first temperature based on a lowest temperature of the temperatures detected by the plurality of temperature detectors, a highest temperature of the temperatures detected by the plurality of temperature detectors, and a weighting value to assign weights such that a weight assigned to the lowest temperature increases as the lowest temperature decreases.Type: ApplicationFiled: December 12, 2025Publication date: April 16, 2026Inventor: Junki ITO
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Publication number: 20260103872Abstract: An electric working machine includes a battery assembly, an electric actuator to be actuated by electricity supplied by the battery assembly, a working device to be actuated by the electric actuator, a temperature detector to detect a temperature of the battery assembly, and a controller configured or programmed to control, according to the temperature of the battery assembly, a first upper limit of a charging current supplied to the battery assembly. The controller is configured or programmed to switch between a first mode in which the controller controls the charging current based on a first correspondence relationship in which temperatures of the battery assembly and first upper limits are associated with each other, and a second mode in which the controller controls the charging current based on a second correspondence relationship in which the first upper limits are lower than in the first correspondence relationship at one or more temperatures.Type: ApplicationFiled: December 12, 2025Publication date: April 16, 2026Inventor: Junki ITO
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Publication number: 20260084440Abstract: A printing system includes a controller that controls printing by a printing apparatus and textile printing processing by a heat treatment apparatus. The controller includes a print data generation unit, a print control unit that prints information on a medium based on the print data, and a textile printing parameter setting unit that sets at least a heating temperature and a heating time of the medium in the processing. Each of the inks included in an ink set contains a sublimable dye as a color development component, and the dye contained in a magenta ink is a disperse red. The textile printing parameter setting unit sets a heating temperature in the processing to a first temperature higher than a heating temperature and sets a heating time in the processing to a first time longer than a heating time when the dye contained in the magenta ink is a disperse red.Type: ApplicationFiled: September 10, 2025Publication date: March 26, 2026Applicant: MIMAKI ENGINEERING CO., LTD.Inventors: Junki Ito, Takeyuki Sakurai, Akihiro Nishiguchi
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Publication number: 20250283303Abstract: A working machine includes a machine body, a rotary drive source, a hydraulic device to be actuated by power generated by the rotary drive source, a working device to be actuated by a hydraulic of hydraulic fluid from the hydraulic device, a work detector to detect whether the working device is actuated, and a controller configured or programmed to, when an elapsed time period which starts when the working device enters a non-actuated state reaches a first threshold, reduce a rotational speed of the rotary drive source to a reduced rotational speed obtained by subtracting a predetermined value from a set rotational speed at a time immediately before the elapsed time period reaches the first threshold or from an actual rotational speed, and, as the elapsed time period further increases from the first threshold, reduce the rotational speed to an idling rotational speed in a stepwise or continuous manner.Type: ApplicationFiled: May 28, 2025Publication date: September 11, 2025Applicant: KUBOTA CORPORATIONInventor: Junki ITO
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Publication number: 20250277354Abstract: An electric working machine includes an electric motor, a rotational speed detector to detect an actual rotational speed of the electric motor, and a controller to control a rotational speed and an output torque of the electric motor. The controller is switchable between a first mode in which the electric motor is controlled such that a relationship between the actual rotational speed and a first upper limit value of the output torque satisfies a first map and a second mode in which the control is performed such that the relationship satisfies a second map. The maps are defined such that the first upper limit value of the output torque at a certain actual rotational speed on the second map is smaller than that of the first map, and that a difference between the first upper limit values on the first and second maps increases as the actual rotational speed increases.Type: ApplicationFiled: May 19, 2025Publication date: September 4, 2025Applicant: KUBOTA CORPORATIONInventor: Junki ITO
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Patent number: 12366049Abstract: A swivel working machine includes a swivel base, a battery, a support to support a battery on or above the swivel base, an electric motor to be driven by electricity outputted by the battery, a hydraulic pump to be driven by the electric motor to deliver hydraulic fluid, a support portion to support the electric motor and the hydraulic pump on or above the swivel base. The support portion is separate from the support body and attached to the swivel base via a plurality of mounting devices.Type: GrantFiled: September 27, 2024Date of Patent: July 22, 2025Assignee: KUBOTA CORPORATIONInventors: Kiyoshi Matsui, Junki Ito, Masamitsu Date
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Patent number: 12345014Abstract: A swiveling working machine includes a swivel base; a working device provided on a front side of the swivel base; a battery unit; an electric motor that is driven by electric power output by the battery unit; and a hydraulic pump that delivers a hydraulic fluid by driving of the electric motor. The battery unit is disposed at a rear portion of the swivel base. The electric motor and the hydraulic pump are disposed sideward of the battery unit side by side in a front-rear direction.Type: GrantFiled: May 16, 2022Date of Patent: July 1, 2025Assignee: KUBOTA CORPORATIONInventors: Teruo Kunizawa, Junki Ito, Yoshiaki Araki, Takahiro Takaki, Go Takaki, Akihiro Kishimoto
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Patent number: 12286766Abstract: A swiveling work machine includes a swivel base, a prime mover provided on the swivel base, a work device provided on the swivel base, and a support mechanism to support a fuel cylinder storing fuel for the prime mover.Type: GrantFiled: September 28, 2021Date of Patent: April 29, 2025Assignee: KUBOTA CORPORATIONInventors: Teruo Kunizawa, Kiyoshi Matsui, Junki Ito, Haruhito Ikeda, Masamitsu Date, Alessandro Cecchini, Massimo Barchi
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Publication number: 20250019931Abstract: A working machine includes a machine body, a working device on the machine body, an operation room structure on the machine body and including an operation room and a floor surface body to define a floor surface of the operation room, and a heater to heat an interior of the operation room. The heater includes a heat generator to generate heat by using electric power, and a hot water circulator to cause water heated as a result of heat generation of the heat generator to circulate. Among components of the heater, at least the heat generator is located in a space in the machine body below the floor surface body.Type: ApplicationFiled: September 27, 2024Publication date: January 16, 2025Inventors: Junki ITO, Daiki TAMBA, Takuya SAKUTA
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Publication number: 20250020075Abstract: A swivel working machine includes a radiator fan, an oil cooler fan, a temperature detector to detect a temperature of a target, a storage/memory to store first data defining a relationship between the detected temperature and a first target rotational speed, and second data defining a relationship between the detected temperature and a second target rotational speed, and a controller configured or programmed to control a rotational speed of the radiator fan to the first target rotational speed corresponding to the detected temperature and control a rotational speed of the oil cooler fan to the second target rotational speed corresponding to the detected temperature. The second target rotational speed is set such that a difference between the second and first target rotational speeds is a predetermined difference or more.Type: ApplicationFiled: September 26, 2024Publication date: January 16, 2025Inventor: Junki ITO
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Publication number: 20250019929Abstract: A swivel working machine includes an exterior cover to define a space where device(s) is/are provided on a swivel base, an inspection door openably and closably provided in the exterior cover and including an air exit portion, a fan to discharge cooling air sucked from an interior of a machine body toward the air exit portion, a heat exchanger to cool a to-be-cooled target using cooling air sucked by the fan, and a shroud to surround the fan and guide cooling air generated by the fan. When the inspection door in a closed state, a duct to guide cooling air generated by the fan to the air exit portion is defined by an opening edge portion of the shroud making contact with a portion of the inspection door that surrounds the air exit portion.Type: ApplicationFiled: September 27, 2024Publication date: January 16, 2025Inventors: Junki ITO, Fuminori SATO, Masamitsu DATE, Yuya YOSHIOKA
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Publication number: 20250019935Abstract: An electric working machine includes an electric motor drivable by electric power from a battery on a machine body, a hydraulic device actuatable by power from the electric motor, a working device actuatable by hydraulic pressure of hydraulic fluid supplied from the hydraulic device, a switch switchable between a first position to permit actuation of the working device and a second position to not permit actuation of the working device, and a fluid temperature detector to detect a temperature of hydraulic fluid. While the electric motor is driven, when the switch is switched to the second position and the temperature of hydraulic fluid is within an allowable temperature range that is neither in a low temperature state nor a high temperature state, a controller is configured or programmed to control a rotation speed of the electric motor to a predetermined first rotation speed corresponding to a stopped state of the electric motor.Type: ApplicationFiled: September 26, 2024Publication date: January 16, 2025Inventors: Takuma SAI, Ikuhiro UOTANI, Junki ITO, Daiki TAMBA
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Publication number: 20250019928Abstract: A swivel working machine includes a swivel base, a battery, a support to support a battery on or above the swivel base, an electric motor to be driven by electricity outputted by the battery, a hydraulic pump to be driven by the electric motor to deliver hydraulic fluid, a support portion to support the electric motor and the hydraulic pump on or above the swivel base. The support portion is separate from the support body and attached to the swivel base via a plurality of mounting devices.Type: ApplicationFiled: September 27, 2024Publication date: January 16, 2025Inventors: Kiyoshi MATSUI, Junki ITO, Masamitsu DATE
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Publication number: 20250012050Abstract: An electric working machine includes an electric motor to use electric power received from a battery via an inverter to drive a hydraulic pump to deliver hydraulic fluid to actuate a hydraulic device. A controller to control driving of the inverter and the electric motor is configured or programmed to gradually increase a rotation speed of the electric motor such that the rotation speed of the electric motor reaches a target rotation speed in a longer time when the electric motor is started in a state in which a temperature of hydraulic fluid detected by a fluid temperature detector is lower than or equal to a predetermined temperature than when the electric motor is started in a state in which the temperature of hydraulic fluid is higher than the predetermined temperature.Type: ApplicationFiled: September 19, 2024Publication date: January 9, 2025Inventors: Takuma SAI, Kiyoshi MATSUI, Junki ITO
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Publication number: 20250003193Abstract: A working machine includes an electric motor, a working device driven by power of the electric motor, an operation device to operate the working device, an operation locker switchable between an enabling position at which an operation of the working device by the operation device is enabled and a disabling position at which the operation is disabled, a cooler including an electric cooling fan, a temperature detector to detect a cooling target temperature, which is the temperature of a cooling target to be cooled by the cooler, and a controller to control a fan rotational speed, which is the rotational speed of the cooling fan, in accordance with the cooling target temperature detected by the temperature detector. The controller changes a characteristic of the fan rotational speed with respect to the cooling target temperature depending on whether the operation locker is in the enabling position or in the disabling position.Type: ApplicationFiled: September 16, 2024Publication date: January 2, 2025Inventors: Junki ITO, Daiki TAMBA, Takuma SAI
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Patent number: 12123167Abstract: A working machine includes: a machine body; a prime mover that is mounted on the machine body; a fuel cylinder that contains a fuel; a vaporizer that vaporizes the fuel sent from the fuel cylinder and supplies the fuel to the prime mover; a temperature detector that detects a temperature correlating with a decrease in the temperature of the vaporizer; and a controller that imposes restraint on the flow rate of the fuel flowing from the vaporizer to the prime mover when the temperature detected by the temperature detector is lower than or equal to a first temperature.Type: GrantFiled: June 3, 2022Date of Patent: October 22, 2024Assignee: KUBOTA CORPORATIONInventors: Teruo Kunizawa, Kiyoshi Matsui, Junki Ito, Haruhito Ikeda, Hisayuki Hiramatsu, Satoshi Osaki, Atsushi Matsumoto
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Publication number: 20220298745Abstract: A working machine includes: a machine body; a prime mover that is mounted on the machine body; a fuel cylinder that contains a fuel; a vaporizer that vaporizes the fuel sent from the fuel cylinder and supplies the fuel to the prime mover; a temperature detector that detects a temperature correlating with a decrease in the temperature of the vaporizer; and a controller that imposes restraint on the flow rate of the fuel flowing from the vaporizer to the prime mover when the temperature detected by the temperature detector is lower than or equal to a first temperature.Type: ApplicationFiled: June 3, 2022Publication date: September 22, 2022Applicant: KUBOTA CORPORATIONInventors: Teruo KUNIZAWA, Kiyoshi MATSUI, Junki ITO, Haruhito IKEDA, Hisayuki HIRAMATSU, Satoshi OSAKI, Atsushi MATSUMOTO
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Publication number: 20220275601Abstract: A swiveling working machine includes a swivel base; a working device provided on a front side of the swivel base; a battery unit; an electric motor that is driven by electric power output by the battery unit; and a hydraulic pump that delivers a hydraulic fluid by driving of the electric motor. The battery unit is disposed at a rear portion of the swivel base. The electric motor and the hydraulic pump are disposed sideward of the battery unit side by side in a front-rear direction.Type: ApplicationFiled: May 16, 2022Publication date: September 1, 2022Applicant: KUBOTA CORPORATIONInventors: Teruo KUNIZAWA, Junki ITO, Yoshiaki ARAKI, Takahiro TAKAKI, Go TAKAKI, Akihiro KISHIMOTO
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Publication number: 20220018092Abstract: A swiveling work machine includes a swivel base, a prime mover provided on the swivel base, a work device provided on the swivel base, and a support mechanism to support a fuel cylinder storing fuel for the prime mover.Type: ApplicationFiled: September 28, 2021Publication date: January 20, 2022Applicant: KUBOTA CORPORATIONInventors: Teruo KUNIZAWA, Kiyoshi MATSUI, Junki ITO, Haruhito IKEDA, Masamitsu DATE, Alessandro CECCHINI, Massimo BARCHI
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Patent number: D949211Type: GrantFiled: September 26, 2019Date of Patent: April 19, 2022Assignee: KUBOTA CORPORATIONInventors: Haruhito Ikeda, Kiyoshi Matsui, Teruo Kunizawa, Junki Ito, Masamitsu Date, Alessandro Cecchini, Massimo Barchi