Patents by Inventor Takeshi Kamimae
Takeshi Kamimae 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: 11873623Abstract: A controller controls a first drive source and a second drive source based on a moving speed of a motor grader measured by a speed sensor and a turning angular velocity of the motor grader measured by an IMU, to thereby independently control a rotation speed of each of a right front wheel and a left front wheel.Type: GrantFiled: February 26, 2019Date of Patent: January 16, 2024Assignee: KOMATSU LTD.Inventors: Shintaro Kobayashi, Yuki Arai, Takeshi Kamimae
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Publication number: 20230417021Abstract: A work machine is provided that can achieve an automatic brake retention function without hindering work. The work machine includes a vehicular body that travels, a work implement supported on the vehicular body, an accelerator operation device operated to increase a traveling speed of the vehicular body, a brake operation device operated to decrease the traveling speed of the vehicular body, and a controller. The controller performs automatic brake retention control to retain a braking force to maintain a travel-stopped state of the vehicular body when the traveling speed of the vehicular body becomes less than or equal to a threshold by operation of the brake operation device, and release the retention of the braking force by operation of the accelerator operation device. The controller determines whether work is being performed by the work implement, and when work is being performed, disables the automatic brake retention control.Type: ApplicationFiled: November 5, 2021Publication date: December 28, 2023Applicant: KOMATSU LTD.Inventors: Yuki OKAMUNE, Tsukasa KITAMURA, Akihiro KYOZU, Takeshi KAMIMAE
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Publication number: 20230203779Abstract: Detection accuracy of a device for obtaining a position of a blade is improved. A motor grader includes an antenna for reception of a satellite position determination signal arranged in a roof portion of a cab, a first IMU mounted on the cab, a second IMU mounted on a draw bar, a rotation angle sensor that detects an angle of rotation of a swing circle with respect to the draw bar, an inclination angle sensor that detects an angle of inclination of a blade with respect to the swing circle, and a controller. The controller obtains the position of the blade in a global coordinate system based on the satellite position determination signal received by the antenna and results of detection by the first IMU, the second IMU, the rotation angle sensor, and the inclination angle sensor.Type: ApplicationFiled: May 26, 2021Publication date: June 29, 2023Applicant: KOMATSU LTD.Inventor: Takeshi KAMIMAE
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Publication number: 20230089245Abstract: A motor grader includes an operation apparatus, a front frame, a draw bar swingably attached to the front frame, a first actuator attached to the draw bar, the first actuator moving the draw bar in a lateral direction with respect to the front frame, a second actuator attached to the draw bar, the second actuator moving the draw bar in a direction toward the front frame and a direction away from the front frame, and a controller that causes the first actuator and the second actuator to operate. The controller causes the first actuator and the second actuator to operate based on an operation signal received from the operation apparatus such that a position of the draw bar with respect to the front frame comes closer to a neutral position of the draw bar with respect to the front frame.Type: ApplicationFiled: January 6, 2021Publication date: March 23, 2023Applicant: KOMATSU LTD.Inventor: Takeshi KAMIMAE
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Publication number: 20230060917Abstract: A motor grader includes a front frame, a rear frame, an actuator that pivots the front frame with respect to the rear frame, an operator operation apparatus, a display apparatus, and a controller. The controller causes the display apparatus to show any one of an image showing a state of pivot and an image different from the image showing the state of pivot, based on a signal from the operator operation apparatus.Type: ApplicationFiled: December 24, 2020Publication date: March 2, 2023Applicant: KOMATSU LTD.Inventors: Yuki OKAMUNE, Hirohito HAGIWARA, Kengo YAMAMOTO, Hiroki NAGASAKI, Takeshi KAMIMAE
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Publication number: 20230060128Abstract: A motor grader includes an operation apparatus, a swing circle, a blade supported on the swing circle, a first actuator arranged along a longitudinal direction of the blade, the first actuator moving the blade in a lateral direction with respect to the swing circle, and a controller that causes the first actuator to operate. The controller receives an operation signal from the operation apparatus and causes the first actuator to operate based on the received operation signal such that a position of the blade with respect to the swing circle comes closer to a neutral position of the blade with respect to the swing circle.Type: ApplicationFiled: January 6, 2021Publication date: March 2, 2023Applicant: KOMATSU LTD.Inventor: Takeshi KAMIMAE
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Publication number: 20220325499Abstract: A motor grader representing a work vehicle includes a steering mechanism and a control unit. The control unit generates a travel path of the motor grader based on a position and an azimuth of the motor grader and a direction of travel of the motor grader and controls the steering mechanism such that the motor grader travels along the generated travel path.Type: ApplicationFiled: July 7, 2020Publication date: October 13, 2022Applicant: KOMATSU LTD.Inventors: Takuya SONODA, Takeshi KAMIMAE, Yukihisa SAKAI
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Publication number: 20220298749Abstract: A motor grader representing a work vehicle includes a steering mechanism and a control unit. The control unit controls the steering mechanism to maintain constant, a rate of change in a direction of travel per unit travel distance of the motor grader.Type: ApplicationFiled: July 7, 2020Publication date: September 22, 2022Applicant: KOMATSU LTD.Inventors: Takuya SONODA, Takeshi KAMIMAE, Yukihisa SAKAI
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Publication number: 20220289012Abstract: A motor grader in which a motive power source of an electric motor can appropriately be arranged is provided. The motor grader includes a front frame, a rear frame, and a coupling shaft. The rear frame is arranged in the rear of the front frame. The coupling shaft couples the front frame to the rear frame as being pivotable with respect to the rear frame. The motor grader includes a front wheel rotationally driven to run the motor grader, the electric motor that generates driving force for rotationally driving the front wheel, and a battery in which electric power supplied to the electric motor is stored. The battery is arranged in front of the coupling shaft.Type: ApplicationFiled: July 29, 2020Publication date: September 15, 2022Applicant: KOMATSU LTD.Inventor: Takeshi KAMIMAE
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Publication number: 20220049455Abstract: A cutting edge has an attachment portion and a wear portion. The attachment portion has a first thickness, which is a maximum value of a thickness between a first surface and a second surface. The wear portion includes a first portion having a third surface contiguous to the first surface and a fourth surface facing away from the third surface, and having a second thickness between the third surface and the fourth surface and smaller than the first thickness, and an edge located opposite to the attachment portion. The second portion extends on the first portion from a portion of the fourth surface toward a side opposite to the third surface, and also extends on the first portion from the edge toward the attachment portion.Type: ApplicationFiled: January 29, 2020Publication date: February 17, 2022Applicant: KOMATSU LTD.Inventors: Shintaro KOBAYASHI, Takeshi KAMIMAE, Shu TAKEDA, Akira HOSOKAWA, Yohei HASHIMOTO
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Publication number: 20210087791Abstract: A controller controls a first drive source and a second drive source based on a moving speed of a motor grader measured by a speed sensor and a turning angular velocity of the motor grader measured by an IMU, to thereby independently control a rotation speed of each of a right front wheel and a left front wheel.Type: ApplicationFiled: February 26, 2019Publication date: March 25, 2021Applicant: KOMATSU LTD.Inventors: Shintaro KOBAYASHI, Yuki ARAI, Takeshi KAMIMAE
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Publication number: 20200399858Abstract: A controller controls a first drive source and a second drive source based on a rotation speed of a right rear wheel measured by a rotation speed sensor and a rotation speed of a left rear wheel measured by a rotation speed sensor, to thereby independently control a rotation speed of each of a right front wheel and a left front wheel.Type: ApplicationFiled: February 26, 2019Publication date: December 24, 2020Applicant: KOMATSU LTD.Inventors: Shintaro KOBAYASHI, Yuki ARAI, Takeshi KAMIMAE
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Patent number: 10759337Abstract: A work vehicle includes a blade, a shutter, a notification unit, and a controller. The blade includes a lower end. The shutter is attached to the blade. The shutter can be alternatively disposed at a first position at which the shutter protrudes forward from the lower end of the blade or at a second position at which the shutter is farther away from the lower end than at the first position. The notification unit is configured to notify surroundings of the work vehicle about information of the work vehicle. The controller is configured to change information notified by the notification unit in accordance with an arrangement of the shutter at one of the first position and the second position.Type: GrantFiled: November 21, 2017Date of Patent: September 1, 2020Assignee: KOMATSU LTD.Inventors: Takeshi Kamimae, Nobuo Matsuyama, Shintaro Kobayashi, Muneo Harada
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Patent number: 10745873Abstract: A work vehicle allowing a simplified operation to open and close a shutter in a simple configuration is provided. The shutter can be disposed alternatively at a first position at which the shutter protrudes forward from a lower end of a blade or at a second position at which the shutter is farther away from the lower end than at the first position. The controller is configured to receive an input of an operation instruction from an input operation unit for moving the shutter from the second position to the first position, to cause the shutter to move from the second position to the first position. After a lapse of a prescribed time period since the shutter is moved to the first position, the controller causes the shutter to move from the first position to the second position.Type: GrantFiled: November 21, 2017Date of Patent: August 18, 2020Assignee: KOMATSU LTD.Inventors: Takeshi Kamimae, Nobuo Matsuyama, Shintaro Kobayashi, Muneo Harada
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Publication number: 20180355569Abstract: A work vehicle allowing a simplified operation to open and close a shutter in a simple configuration is provided. The shutter can be disposed alternatively at a first position at which the shutter protrudes forward from a lower end of a blade or at a second position at which the shutter is farther away from the lower end than at the first position. The controller is configured to receive an input of an operation instruction from an input operation unit for moving the shutter from the second position to the first position, to cause the shutter to move from the second position to the first position. After a lapse of a prescribed time period since the shutter is moved to the first position, the controller causes the shutter to move from the first position to the second position.Type: ApplicationFiled: November 21, 2017Publication date: December 13, 2018Applicant: KOMATSU LTD.Inventors: Takeshi Kamimae, Nobuo Matsuyama, Shintaro Kobayashi, Muneo Harada
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Publication number: 20180354415Abstract: A work vehicle capable of notifying surroundings about information of the work vehicle at appropriate timing is provided. The work vehicle includes a blade, a shutter, a notification unit, and a controller. The blade includes a lower end. The shutter is attached to the blade. The shutter can be alternatively disposed at a first position at which the shutter protrudes forward from the lower end of the blade or at a second position at which the shutter is farther away from the lower end than at the first position. The notification unit is configured to notify surroundings of the work vehicle about information of the work vehicle. The controller is configured to change information notified by the notification unit in accordance with an arrangement of the shutter at one of the first position and the second position.Type: ApplicationFiled: November 21, 2017Publication date: December 13, 2018Applicant: KOMATSU LTD.Inventors: Takeshi KAMIMAE, Nobuo MATSUYAMA, Shintaro KOBAYASHI, Muneo HARADA
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Patent number: 9631345Abstract: A mode selecting unit is configured to generate an operation signal indicating one control mode selected from a plurality of control modes including a predetermined first mode and a second mode in which a traction force is controlled to be smaller than a traction force in the first mode. A controller is configured to obtain the operation signal from the mode selecting unit and control a drivetrain in accordance with the selected control mode. The controller is configured to start controlling the drivetrain in the second mode in starting of a vehicle.Type: GrantFiled: September 16, 2015Date of Patent: April 25, 2017Assignee: KOMATSU LTD.Inventors: Yutaka Tanaka, Takeshi Kamimae, Atsushi Shirao, Satoshi Isejima
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Patent number: 9631342Abstract: A wheel loader includes an engine, an engine compartment, an injection device, a top plate and a first guide member. The injection device is disposed in the engine compartment. The top plate has a ventilation part. The ventilation part is disposed in a position horizontally away from the injection device. The first guide member has a guide body. The guide body is disposed along the top plate to direct air existing over the injection device to the ventilation part.Type: GrantFiled: August 19, 2014Date of Patent: April 25, 2017Assignee: KOMATSU LTD.Inventors: Takeshi Kamimae, Yutaka Tanaka, Norihito Bando, Kazunori Kamei, Kenji Hiraoka, Yasufumi Ohchi
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Publication number: 20170073933Abstract: A mode selecting unit is configured to generate an operation signal indicating one control mode selected from a plurality of control modes including a predetermined first mode and a second mode in which a traction force is controlled to be smaller than a traction force in the first mode. A controller is configured to obtain the operation signal from the mode selecting unit and control a drivetrain in accordance with the selected control mode. The controller is configured to start controlling the drivetrain in the second mode in starting of a vehicle.Type: ApplicationFiled: September 16, 2015Publication date: March 16, 2017Inventors: Yutaka TANAKA, Takeshi KAMIMAE, Atsushi SHIRAO, Satoshi ISEJIMA
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Publication number: 20170073929Abstract: An engine compartment accommodates an engine. A cooling device is configured to cool the engine. A cooling compartment accommodates the cooling device. A division wall is disposed between the engine compartment and the cooling compartment. A ventilation portion includes a hole for permitting air to pass therethrough and is provided on a top surface of the engine compartment. A water receiving member is disposed under the ventilation portion within the engine compartment. A water catchment member is disposed in the cooling compartment and catches water received by the water receiving member. A drainage pathway is connected to the water catchment member and leads the water to a predetermined drainage position.Type: ApplicationFiled: September 14, 2015Publication date: March 16, 2017Inventors: Yutaka TANAKA, Takeshi KAMIMAE, Ken NISHIHARA, Yasufumi OHCHI