Patents by Inventor Sumio Yagyu
Sumio Yagyu 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: 11273834Abstract: A work management system includes a generator attached to a structure body that is provided to a transmission case of a working machine, configured to be driven by power transmitted from a PTO shaft, and configured to transmit power to a working device provided in the working machine, an information obtaining portion configured to obtain operation information representing operation of the working device that is activated by the power from the generator, a work management portion configured to manage working of the working device based on the operation information obtained by the information obtaining portion, and a controller portion configured to control the working device based on the operation information obtained by the information obtaining portion.Type: GrantFiled: December 27, 2019Date of Patent: March 15, 2022Assignee: KUBOTA CORPORATIONInventors: Sumio Yagyu, Takao Nakagawa, Masaru Kawane, Piet Jan Van Der Marel
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Patent number: 11214152Abstract: A working device connected to a traveling vehicle having a prime mover and configured to perform an agricultural work, includes: a working portion to perform an agricultural work; an electric motor to be driven by electric power; a power transmission mechanism to which power generated by the electric motor is inputted, configured to transmit the power to the working portion; a regeneration resistor to consume a regenerative power generated in the electric motor; a switch portion to switch, between a connecting state and a shut-off state, a state established between the electric motor and the regeneration resistor; and a controller portion to control driving of the electric motor and switching of the switch portion.Type: GrantFiled: June 24, 2020Date of Patent: January 4, 2022Assignee: KUBOTA CORPORATIONInventors: Yukifumi Yamanaka, Sumio Yagyu, Go Takaki
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Publication number: 20210296966Abstract: A water jacket is attempted to include a means to provide high heat transfer between coolant and a side wall of a cooling passage to increase a heat transfer capacity thereof. A liquid-cooled motor includes a motor case, a motor provided in the motor case, a motor housing provided in the motor case, and a water jacket provided in the motor housing, the water jacket having a circular shape to allow coolant to flow in a circumferential direction. The water jacket includes a cooling passage in which the coolant flows, the cooling passage having a passage width reduced gradually, a coolant supply port to supply the coolant to the cooling passage, and a coolant drain port to drain the coolant from the cooling passage.Type: ApplicationFiled: June 8, 2021Publication date: September 23, 2021Applicant: KUBOTA CORPORATIONInventor: Sumio YAGYU
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Publication number: 20210203202Abstract: A fluid cooled motor includes a stator, a rotor disposed in the stator rotatably in a circumferential direction, and a stator coil wound on the stator, the stator coil having coil ends extending in an axial direction perpendicular to the circumferential direction. The rotor has a rotor core and annular end plates fixed to axial ends of the rotor core, the annular end plates opposing to the coil ends of the stator coil and being rotatable with the rotor in the circumferential direction. Each of the end plates includes a plurality of flow passages to guide a cooling fluid from an inlet to an outlet thereof in a radially outward direction. Each of the flow passages extends from the inlet to the outlet, and inclines or curves to a direction opposite to a rotation direction of the rotor with respect to a radial direction.Type: ApplicationFiled: October 8, 2020Publication date: July 1, 2021Applicant: KUBOTA CORPORATIONInventor: Sumio YAGYU
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Patent number: 11015657Abstract: A parallel hybrid power transmission mechanism includes a crank shaft, a driven device to which a power of an engine and/or a motor generator is transmitted, an input shaft disposed on the driven device, a flywheel connected to the crank shaft, and a rotor disposed on the motor generator, including a first connecting portion connected to an outside of the flywheel. The rotor is configured to supply and receive a rotational power to and from the flywheel through the first connecting portion. The parallel hybrid power transmission mechanism further includes a coupling arranged independently from the rotor, including a second connecting portion connected to an inside of the flywheel, the coupling being configured to receive the rotational power of the flywheel through the second connecting portion, and an intermediate shaft connecting the coupling and the input shaft to each other, the intermediate shaft being configured to transmit the rotational power received by the coupling to the input shaft.Type: GrantFiled: June 8, 2018Date of Patent: May 25, 2021Assignee: KUBOTA CORPORATIONInventors: Sumio Yagyu, Kazuto Okazaki
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Publication number: 20200336092Abstract: A working machine includes: a first generator having: a rotor to be rotated by power from a PTO shaft; a rotor coil provided to the rotor; and a stator coil to generate electricity when magnetizing current is applied to the rotor coil; a working device to be operated by the electricity generated by the first generator; and a converter device to convert surplus electricity not consumed by the working device into the magnetizing current to be applied to the rotor coil.Type: ApplicationFiled: June 30, 2020Publication date: October 22, 2020Applicant: KUBOTA CORPORATIONInventors: Masaru KAWANE, Sumio YAGYU, Takao NAKAGAWA, Yukifumi YAMANAKA, Go TAKAKI
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Publication number: 20200329632Abstract: A spraying support system for a working machine, includes: a support device including a plan creator portion to create a spraying plan representing a relation between field information relating to a field to which spray substance is sprayed and spraying information including spraying amount of the spray substance; a plan obtainer device provided to a working machine having a sprayer device to spray the spray substance and configured to obtain the spraying plan created by the plan creator portion; and a spraying controller device to control a sprayer portion of the sprayer device based on the spraying information of the spraying plan obtained by the plan obtainer device.Type: ApplicationFiled: June 30, 2020Publication date: October 22, 2020Applicant: KUBOTA CORPORATIONInventors: Sumio YAGYU, Takao NAKAGAWA, Masaru KAWANE, Yukifumi YAMANAKA, Go TAKAKI
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Publication number: 20200323127Abstract: A working device to be connected to a traveling vehicle having a prime mover, the working device being configured to perform an agricultural work, includes a working portion to rotate to perform an agricultural work, an electric motor to be driven by electric power, a power transmission mechanism to which power generated by the electric motor is inputted, configured to transmit the power to the working portion; and a regeneration resistor to consume a regenerative power generated in the electric motor, the regeneration resistor being arranged at a position to be cooled by wind generated by rotation of the working portion.Type: ApplicationFiled: June 25, 2020Publication date: October 15, 2020Applicant: KUBOTA CORPORATIONInventors: Go TAKAKI, Sumio YAGYU, Yukifumi YAMANAKA
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Publication number: 20200315084Abstract: A generator unit to be attached to a traveling vehicle that has a prime mover and a PTO shaft to transmit power from the prime mover, includes: a generator; an input shaft having: a first connector portion configured to be connected to the PTO shaft; and a second connector portion configured to be connected to a working device to be connected to the traveling vehicle; a transmitter mechanism to transmit, to the generator, power supplied from the PTO shaft, the power being inputted from the first connector portion to the input shaft; and an attachment frame having: an attachment portion to which the generator, the input shaft, and the transmitter mechanism are attached; and a mounting portion configured to be mounted to the traveling vehicle.Type: ApplicationFiled: June 24, 2020Publication date: October 8, 2020Applicant: KUBOTA CORPORATIONInventors: Sumio YAGYU, Takashi UCHIDA, Yukifumi YAMANAKA, Go TAKAKI
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Publication number: 20200317066Abstract: A working device connected to a traveling vehicle having a prime mover and configured to perform an agricultural work, includes: a working portion to perform an agricultural work; an electric motor to be driven by electric power; a power transmission mechanism to which power generated by the electric motor is inputted, configured to transmit the power to the working portion; a regeneration resistor to consume a regenerative power generated in the electric motor; a switch portion to switch, between a connecting state and a shut-off state, a state established between the electric motor and the regeneration resistor; and a controller portion to control driving of the electric motor and switching of the switch portion.Type: ApplicationFiled: June 24, 2020Publication date: October 8, 2020Applicant: KUBOTA CORPORATIONInventors: Yukifumi YAMANAKA, Sumio YAGYU, Go TAKAKI
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Publication number: 20200189387Abstract: An attachment structure of a generator and a working machine including a transmission case; and a PTO shaft protruding from the transmission case, includes a structure body attached to a side of the transmission case from which the PTO shaft protrudes, and includes the generator attached to the structure body.Type: ApplicationFiled: December 27, 2019Publication date: June 18, 2020Applicant: KUBOTA CORPORATIONInventors: Sumio YAGYU, Takao NAKAGAWA, Masaru KAWANE
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Publication number: 20200163274Abstract: A spreader device includes a container portion configured to contain spread substance, a spreader portion having a rotor configured to spread the spread substance contained in the container portion, and an attachment portion configured to be attached to a vehicle body. The spreader portion includes at least three spreader portions. Preferably, each of the at least three spreader portions has a different spreading direction. Preferably, the spreader portion includes a first spreader portion having a first rotor configured to spread the spread substance contained in the container portion, a second spreader portion having a second rotor configured to spread the spread substance contained in the container portion, and a third spreader portion having a third rotor configured to spread the spread substance contained in the container portion.Type: ApplicationFiled: December 27, 2019Publication date: May 28, 2020Applicant: KUBOTA CORPORATIONInventors: Takao NAKAGAWA, Sumio YAGYU, Masaru KAWANE
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Publication number: 20200146209Abstract: A spreader device includes a container to contain spread substance, a first spreader portion having a first rotor to spray the spread substance contained in the container, a second spreader portion having a second rotor to spray the spread substance contained in the container, a first driver source to drive the first rotor, a first shaft to transmit a driving force outputted from the first driver source, a second shaft to transmit a driving force outputted from a second driver source different from the first driver source, and a selection transmitter portion to selectively transmit the driving force form the first shaft and the driving force from the second shaft to the first rotor or the second rotor.Type: ApplicationFiled: December 27, 2019Publication date: May 14, 2020Applicant: KUBOTA CORPORATIONInventors: Sumio YAGYU, Takao NAKAGAWA, Masaru KAWANE, Piet Jan VAN DER MAREL
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Publication number: 20200130693Abstract: A work management system includes a generator attached to a structure body that is provided to a transmission case of a working machine, configured to be driven by power transmitted from a PTO shaft, and configured to transmit power to a working device provided in the working machine, an information obtaining portion configured to obtain operation information representing operation of the working device that is activated by the power from the generator, a work management portion configured to manage working of the working device based on the operation information obtained by the information obtaining portion, and a controller portion configured to control the working device based on the operation information obtained by the information obtaining portion.Type: ApplicationFiled: December 27, 2019Publication date: April 30, 2020Applicant: KUBOTA CORPORATIONInventors: Sumio YAGYU, Takao NAKAGAWA, Masaru KAWANE, Piet Jan VAN DER MAREL
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Patent number: 10608495Abstract: A liquid-cooled motor includes a motor arranged inside a motor case; an internal tube arranged inside the motor case; an external tube arranged outside the motor case; and a supporting member fixed to the motor case to support the internal tube and the external tube and to allow the internal tube and the external tube to be communicated with each other. The supporting member includes a first supporting portion arranged to the motor case side to support the internal tube; and a second supporting portion arranged to another side opposite to the motor case side to support the external tube. The first supporting portion includes sealing members arranged along an outer circumference surface of the internal tube; an air chamber arranged between the sealing members; and a water draining portion allowing the air chamber and an outside portion of the motor case to be communicated with each other.Type: GrantFiled: June 21, 2018Date of Patent: March 31, 2020Assignee: KUBOTA CORPORATIONInventors: Sumio Yagyu, Kazuto Okazaki
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Patent number: 10582657Abstract: A spreading device includes a containing unit to contain a spread material, a first spreading unit including a first rotating body to spread the spread material contained in the containing unit, a second spreading unit including a second rotating body to spread the spread material contained in the containing unit, a first driving source of which speed is changeable, a first shaft to transmit power provided from the first driving source, a second shaft to transmit power provided from a second driving source different from the first driving source, and a power transmission mechanism to receive power from the first shaft and power from the second shaft, the power transmission mechanism being capable of transmitting the power received from the first shaft and the power received from the second shaft to the first rotating body and the second rotating body.Type: GrantFiled: May 30, 2018Date of Patent: March 10, 2020Assignee: KUBOTA CORPORATIONInventors: Sumio Yagyu, Takao Nakagawa, Masaru Kawane
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Patent number: 10574117Abstract: To increase a thermal transmission amount between a tooth and an insulation member and reduce a thermal resistance. A stator (1) of an electric motor includes a yoke (2), a plurality of teeth (3) arranged in a circumferential direction of an inner circumference of the yoke (2), a winding wire (5) wound on the tooth (3), and an insulation member (4) disposed between the tooth (3) and the winding wire (5), the insulation member (4) being formed of elastic resin. A concave-convex portion (3a) is formed at least on a circumferential surface (A) among the circumferential surface and an axial surface (B) of the tooth (3). A concave-convex portion (4a) is formed on an inner surface of the insulation member (4), the concave-convex portion (4a) being configured to be fitted to the concave-convex portion (3a).Type: GrantFiled: June 18, 2015Date of Patent: February 25, 2020Assignee: KUBOTA CORPORATIONInventors: Kazuto Okazaki, Sumio Yagyu
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Patent number: 10562388Abstract: A rotary tilling apparatus separates a power transmission system starting from a flywheel to a passive movement device through an elastic coupler from another power transmission system starting from the flywheel to a rotor of a motor generator, and thereby reduces a load applied to the rotor and prevents the power transmission system of the passive movement device from providing a negative effect to an engine and the rotor. A parallel hybrid power transmission mechanism includes an engine, a crank shaft disposed on the engine, a motor generator, a passive movement device configured to receive a motive power of the motor generator, an input shaft disposed on the passive movement device, a flywheel coupled to the crank shaft, an elastic coupler configured to couple the flywheel to the input shaft, and a rotor disposed on the motor generator and coupled to the fly wheel.Type: GrantFiled: June 9, 2015Date of Patent: February 18, 2020Assignee: KUBOTA CORPORATIONInventors: Sumio Yagyu, Kazuto Okazaki
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Patent number: 10214876Abstract: A work machine includes a machine body, an engine, a rotary electrical device, and an electric power controller. The engine is provided on the machine body to move the machine body. The rotary electrical device is provided on the machine body to move the machine body. The electric power controller is disposed above the rotary electrical device in a height direction along a height of the work machine to control the rotary electrical device.Type: GrantFiled: June 15, 2017Date of Patent: February 26, 2019Assignee: KUBOTA CORPORATIONInventors: Hiroaki Nakagawa, Masahiro Kuroda, Masahiko Nomura, Shinichi Kawabata, Yuki Shimoike, Sumio Yagyu, Kazuto Okazaki, Shizuo Demizu, Yoshihiro Takayama, Toshihiro Nakao
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Patent number: 10179506Abstract: A hybrid vehicle includes an engine, a motor, and a belt stepless speed changer device having a driving rotary body, a driven rotary body, a first shaft member supporting the driving rotary body with allowing rotation thereof in unison, a second shaft member supporting the driven rotary body with allowing rotation thereof in unison, and an endless belt wound around the driving rotary body and the driven rotary body. The vehicle further includes a transmission case configured to receive the powers from the engine and the motor via the belt stepless speed changer device and a centrifugal clutch incorporated in a power transmission line extending form the engine to the first shaft member. The motor is disposed on the side opposite the engine across the driving rotary body, and the driving power of the motor is inputted to the first shaft member.Type: GrantFiled: October 27, 2016Date of Patent: January 15, 2019Assignee: Kubota CorporationInventors: Sumio Yagyu, Go Takaki, Shinichi Kawabata, Shigeki Hayashi, Shohei Nakai, Hiroki Bessho