Patents by Inventor Kotaro Yamaguchi
Kotaro Yamaguchi 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: 11980106Abstract: A persistent current switch includes a superconducting wire including a substrate and a superconducting layer disposed on the substrate, and a heater. The superconducting wire includes a surface including a first portion and a second portion that are disposed apart from each other along a longitudinal direction of the superconducting wire. The first portion and the second portion face each other. The heater is sandwiched between the first portion and the second portion.Type: GrantFiled: August 31, 2020Date of Patent: May 7, 2024Assignees: Sumitomo Electric Industries, Ltd., RIKEN, Japan Superconductor Technology, Inc.Inventors: Takashi Yamaguchi, Kotaro Ohki, Tatsuoki Nagaishi, Yoshinori Yanagisawa, Mamoru Hamada
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Publication number: 20240107931Abstract: A travel assistance system for an agricultural machine includes a traveling device included in an agricultural machine, an acquirer to acquire a travel route to be traveled by the agricultural machine and created on a field representing an agricultural field, a corrector to correct the travel route acquired by the acquirer, and a controller configured or programmed to control the traveling device based on the travel route corrected by the corrector. The travel route includes lines connected to each other and the corrector includes a creator to create an auxiliary line extending from an ending portion of a first line of the lines to a starting portion of a second line of the lines connected to the ending portion of the first line, the auxiliary line being inclined relative to the second one of the lines.Type: ApplicationFiled: December 12, 2023Publication date: April 4, 2024Inventors: Kotaro YAMAGUCHI, Yusuke MINAKATA, Shuya UEDA, Kuya KAIHORI
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Publication number: 20240099176Abstract: An automatic travel system includes a prohibition boundary line setter to set a prohibition boundary line beyond which the vehicle is prohibited from entering, a turning circle setter to set a virtual turning circle as a target route for entry turning travel to enter a subsequent travel route, a transition turning travel controller to control tangent following travel using a vehicle body reference point that is calculated during travel to the virtual turning circle as a target orientation, and the entry turning travel using the virtual turning circle as a turning target route, an interference boundary line detector to detect the prohibition boundary line that is present in a moving direction of the vehicle in the tangent following travel, as an interference boundary line, and an interference avoidance travel controller to control travel for avoiding interference with the interference boundary line.Type: ApplicationFiled: December 6, 2021Publication date: March 28, 2024Inventors: Takanori MORIMOTO, Kotaro YAMAGUCHI, Fumiya YOSHIMURA
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Publication number: 20240069557Abstract: A cultivated land work vehicle includes a vehicle position computer, a travel controller to control travel of the body based on a vehicle position and target routes, and a replenishment mode executor to execute a replenishment travel mode to replenish the cultivated land work vehicle with agricultural material, during U-turn transition travel. In a first replenishment travel mode, reverse travel into the boundary area is performed after a starting point of the next travel route his reached, and forward travel to the starting point of the next travel route his performed after replenishment work is complete. In a second replenishment travel mode, reverse travel into the boundary area is performed before the starting point of the next travel route is reached, and forward travel to the starting point of the next travel route is performed after the replenishment work is complete.Type: ApplicationFiled: December 6, 2021Publication date: February 29, 2024Inventors: Takanori MORIMOTO, Kotaro YAMAGUCHI, Fumiya YOSHIMURA
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Publication number: 20230200282Abstract: An agricultural assistance system includes a route creator to create, on a map representing an agricultural field, a travel route along which an agricultural machine travels, an input to receive input of a turn mode which is one of turn modes differing in terms of how a traveling device of the agricultural machine is driven, a position detector to detect a position of the agricultural machine, an automatic operation controller to perform automatic operation in which the automatic operation controller automatically causes the agricultural machine to travel and automatically steers the agricultural machine, and a turn mode changer to, during automatic operation of the agricultural machine, allow the input to receive input of another turn mode to change the turn mode, and output, to the automatic operation controller, a change command to cause the agricultural machine to turn in the other turn mode inputted via the input.Type: ApplicationFiled: December 2, 2022Publication date: June 29, 2023Inventors: Kotaro YAMAGUCHI, Ken SAKUTA, Ryo KUBOSHIMA, Kuya KAIHORI
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Publication number: 20230200284Abstract: An agricultural machine includes a traveling vehicle body, a position detector to detect a position of the traveling vehicle body, a lifting device to link a working device to the traveling vehicle body, and an automatic operation controller to perform an automatic operation to cause the traveling vehicle body to travel and cause the working device to perform an agricultural job based on a travel route and the position of the traveling vehicle body. The lifting device is operable to, during the automatic operation, place the working device in a work position in which the working device performs the agricultural job, and the automatic operation controller is operable to cause the lifting device to keep the working device in the work position even after stopping the traveling vehicle body and/or the working device to end the automatic operation at a location short of an unworked area of the agricultural field.Type: ApplicationFiled: December 6, 2022Publication date: June 29, 2023Inventors: Takanori MORIMOTO, Kotaro YAMAGUCHI, Ryota KIKUCHI, Kuya KAIHORI
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Publication number: 20230069372Abstract: A travel control system includes a permission unit that permits outermost periphery automatic traveling if predetermined permission conditions are satisfied. The permission conditions include a first condition and a second condition. The first condition is that a reference value corresponding to a working width W1 of a work device 30 is larger than a lateral width W2 of the work device. The second condition is that the reference value is larger than a threshold value determined by a threshold value determination unit. The threshold value determination unit determines the threshold value based on a reference distance D1 between a front end position of a work vehicle 1 and a reference position SP at which the work device 30 is switched from a working state to a non-working state.Type: ApplicationFiled: August 26, 2022Publication date: March 2, 2023Inventors: Takanori Morimoto, Kotaro Yamaguchi, Ryota Kikuchi, Ken Sakuta, Fumiya Yoshimura
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Publication number: 20220304216Abstract: A working machine includes a machine body, a lifting device to link a working device to the machine body, the lifting device being capable of moving up and down with the working device between a grounding state in which the working device is in contact with a ground and an ungrounding state in which the working device is out of contact with the ground, and an automatic travel controller to cause the machine body to perform automatic travel according to a planned travel route. The automatic travel controller includes a lifting controller to control the lifting device to move up with the working device from the grounding state to the ungrounding state, and cause the machine body to turn or travel rearward after the lifting controller controls the lifting device to move up with the working device from the grounding state to the ungrounding state.Type: ApplicationFiled: June 10, 2022Publication date: September 29, 2022Inventors: Fumiya YOSHIMURA, Kotaro YAMAGUCHI, Kenji TAMATANI, Takanori MORIMOTO, Ken SAKUTA
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Publication number: 20220279698Abstract: A working machine includes a machine body, a linkage capable of linking a working device including a spreader to the machine body, an automatic travel controller to cause the machine body to perform automatic travel according to a planned travel route, a range acquirer to acquire a spreading work range that is a range where spreading work is done by the spreader in a front-rear direction thereof, and a work setter to set a work start position and a work end position for the spreader so that the work start position and the work end position are at different positions according to the spreading work range acquired by the range acquirer.Type: ApplicationFiled: May 24, 2022Publication date: September 8, 2022Inventors: Fumiya YOSHIMURA, Kotaro YAMAGUCHI, Kenji TAMATANI, Takanori MORIMOTO, Ken SAKUTA
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Publication number: 20220272889Abstract: A working machine includes a machine body capable of traveling, a position detector to detect a position of the machine body, and a controller to control the machine body based on the position of the machine body detected by the position detector and a planned travel route. The planned travel route includes a straight section on which the machine body travels straight, and the controller includes a threshold setter to set a threshold according to work, and causes the machine body to perform a recovery movement to make a deviation between the position of the machine body detected by the position detector and the planned travel route less than the threshold when the machine body is at a start point of the straight section or is about to enter the start point of the straight section.Type: ApplicationFiled: May 17, 2022Publication date: September 1, 2022Inventors: Fumiya YOSHIMURA, Kotaro YAMAGUCHI, Kenji TAMATANI, Takanori MORIMOTO, Ken SAKUTA
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Publication number: 20220266841Abstract: A working vehicle includes a vehicle body, a linkage provided on the vehicle body to link a working device, a controller to cause the vehicle body to perform automatic travel, a rear obstacle detector to detect obstacles behind the vehicle body, and a setting changer to change rear setting information regarding obstacle detection performed by the rear obstacle detector.Type: ApplicationFiled: May 10, 2022Publication date: August 25, 2022Inventors: Koichi SHINTANI, Fumiya YOSHIMURA, Takuya NISHIKUBO, Takafumi MORISHITA, Kotaro YAMAGUCHI
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Patent number: 11144061Abstract: There is a need for a work vehicle that allows accurate traveling time management in a work site traveling. A work vehicle includes a vehicle body mounting a traveling mechanism, an implement mounted on the vehicle body and configured to effect a ground work on a work site, a satellite positioning module 80 for outputting positioning data, a traveling distance calculation section 51 for calculating a traveling distance of the vehicle body based on the positioning data, a traveling time calculation section 52 for calculating an actual distance traveling time from a time required for traveling of traveling distance calculated by the traveling distance calculation section 51 and a work management section 50 for managing the ground work based on the actual distance traveling time.Type: GrantFiled: December 6, 2016Date of Patent: October 12, 2021Assignee: Kubota CorporationInventors: Atsushi Shinkai, Kotaro Yamaguchi
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Publication number: 20210294345Abstract: A working vehicle includes a vehicle body capable of traveling, a ground working device attached to the vehicle body to perform ground working, an imaging device located on the vehicle body to image a ground working result after the ground working by the ground working device, and a storage to store a ground working image representing the ground working result taken by the imaging device.Type: ApplicationFiled: June 4, 2021Publication date: September 23, 2021Inventors: Atsushi SHINKAI, Kotaro YAMAGUCHI, Kazuo SAKAGUCHI
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Patent number: 10939605Abstract: A controller for a work machine includes a steering control circuit, a memory, and a speed control circuit. The steering control circuit is configured to control a steering of the work machine to change a steering angle based on a travel route. The memory is to store a threshold angle. The speed control circuit is configured to control a speed of the work machine if the steering angle is equal to or larger than the threshold angle and if the steering control circuit does not control the steering.Type: GrantFiled: May 22, 2018Date of Patent: March 9, 2021Assignee: KUBOTA CORPORATIONInventors: Yushi Matsuzaki, Atsushi Shinkai, Kazunobu Sugano, Kotaro Yamaguchi, Takafumi Morishita, Kenji Tamatani, Hiroki Suga
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Patent number: 10916145Abstract: A work vehicle coordination system includes a traveling work parameter setting section (41) included in each work vehicle for setting a traveling work parameter to define a traveling work of each work vehicle, a communication processing section (71, 72) for effecting data communication between/among the plurality of work vehicles, a traveling work parameter acquisition section (42) for acquiring the traveling work parameter set in each work vehicle, a difference data generation section (43) for generating difference data indicative of a difference between/among the traveling work parameters set in the respective work vehicles, and an informing section (56) for informing the difference data.Type: GrantFiled: December 8, 2016Date of Patent: February 9, 2021Assignee: KUBOTA CORPORATIONInventors: Atsushi Shinkai, Kotaro Yamaguchi
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Patent number: 10900787Abstract: A field traveling route production system includes: a field information storage section that stores field information including position information each of a field and an entrance/exit area of the field; a work traveling route calculation section (61) that calculates a work traveling route for the field work vehicle based on the field information and specification of the field work vehicle, the work traveling route interconnecting a traveling work starting point and a traveling work ending point; a fore traveling route calculation section (62) that calculates a fore traveling route extending from the entrance/exit area to the traveling work starting point of the work traveling route; and a post traveling route calculation section (63) that calculates a post traveling route extending from the traveling work ending point to the entrance/exit area.Type: GrantFiled: December 8, 2016Date of Patent: January 26, 2021Assignee: KUBOTA CORPORATIONInventors: Atsushi Shinkai, Kotaro Yamaguchi
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Patent number: 10813267Abstract: A control apparatus for an automatic traveling vehicle includes a position sensor and circuitry. The position sensor is to detect a vehicle position of the automatic traveling vehicle. The circuitry is configured to control the automatic traveling vehicle to travel along a first route, a first turn route connected to the first route, a straight route connected to the first turn route, a second turn route connected to the straight route, and a second route connected to the second turn route in this order, and to calculate the straight route extending from a reference point on the first turn route to the second turn route such that the straight route is tangent to the second turn route.Type: GrantFiled: April 19, 2018Date of Patent: October 27, 2020Assignee: KUBOTA CORPORATIONInventors: Atsushi Shinkai, Kazuo Sakaguchi, Kotaro Yamaguchi, Hiroki Suga
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Publication number: 20190304311Abstract: A work vehicle coordination system includes a traveling work parameter setting section (41) included in each work vehicle for setting a traveling work parameter to define a traveling work of each work vehicle, a communication processing section (71, 72) for effecting data communication between/among the plurality of work vehicles, a traveling work parameter acquisition section (42) for acquiring the traveling work parameter set in each work vehicle, a difference data generation section (43) for generating difference data indicative of a difference between/among the traveling work parameters set in the respective work vehicles, and an informing section (56) for informing the difference data.Type: ApplicationFiled: December 8, 2016Publication date: October 3, 2019Applicant: KUBOTA CORPORATIONInventors: Atsushi SHINKAI, Kotaro YAMAGUCHI
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Patent number: 10407097Abstract: An automatic traveling work vehicle includes a memory to store work traveling information including information on work which a work device is configured to perform and on a state of a work field in which the automatic traveling work vehicle is configured to automatically travel along a target travel route. Circuitry is configured to calculate a vehicle position of the automatic traveling work vehicle, to calculate a track deviation of a vehicle body from the target travel route based on the target travel route and the vehicle position, to calculate a steering sensitivity based on at least one of the information on the work and the information on the state of the work field, and to calculate, based on the track deviation and the steering sensitivity, a steering control amount according to which the steering is controlled.Type: GrantFiled: December 14, 2017Date of Patent: September 10, 2019Assignee: KUBOTA CORPORATIONInventors: Kazuo Sakaguchi, Kotaro Yamaguchi, Hiroki Suga, Atsushi Shinkai
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Publication number: 20190186922Abstract: A field traveling route production system includes: a field information storage section that stores field information including position information each of a field and an entrance/exit area of the field; a work traveling route calculation section (61) that calculates a work traveling route for the field work vehicle based on the field information and specification of the field work vehicle, the work traveling route interconnecting a traveling work starting point and a traveling work ending point; a fore traveling route calculation section (62) that calculates a fore traveling route extending from the entrance/exit area to the traveling work starting point of the work traveling route; and a post traveling route calculation section (63) that calculates a post traveling route extending from the traveling work ending point to the entrance/exit area.Type: ApplicationFiled: December 8, 2016Publication date: June 20, 2019Applicant: KUBOTA CORPORATIONInventors: Atsushi SHINKAI, Kotaro YAMAGUCHI