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).

  • Patent number: 11621597
    Abstract: 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: Grant
    Filed: October 8, 2020
    Date of Patent: April 4, 2023
    Assignee: KUBOTA CORPORATION
    Inventor: Sumio Yagyu
  • Patent number: 11607954
    Abstract: A hybrid power transmission mechanism includes an engine; a motor/generator having a rotor and a stator; a driven machine; a planetary gear mechanism having a sun gear, an internal gear drivingly connected to the rotor, a planetary gear, and a planetary carrier shaft including first and second extension shaft parts extending from the planetary gear in opposite directions; a first clutch switchable between a state of allowing transmission of power between the first shaft and the internal gear and a state of not allowing transmission of power therebetween; and a second clutch switchable between a state of allowing rotation of the sun gear and a state of not allowing rotation thereof. A first shaft that outputs power of the engine and a second shaft that inputs power to the driven machine are drivingly connected to the first and second extension shaft parts of the planetary carrier shaft, respectively.
    Type: Grant
    Filed: June 7, 2022
    Date of Patent: March 21, 2023
    Assignee: KUBOTA CORPORATION
    Inventor: Sumio Yagyu
  • Publication number: 20230030819
    Abstract: A hybrid power transmission mechanism includes an engine; a motor/generator having a rotor and a stator; a driven machine; a planetary gear mechanism having a sun gear, an internal gear drivingly connected to the rotor, a planetary gear, and a planetary carrier shaft including first and second extension shaft parts extending from the planetary gear in opposite directions; a first clutch switchable between a state of allowing transmission of power between the first shaft and the internal gear and a state of not allowing transmission of power therebetween; and a second clutch switchable between a state of allowing rotation of the sun gear and a state of not allowing rotation thereof. A first shaft that outputs power of the engine and a second shaft that inputs power to the driven machine are drivingly connected to the first and second extension shaft parts of the planetary carrier shaft, respectively.
    Type: Application
    Filed: June 7, 2022
    Publication date: February 2, 2023
    Applicant: KUBOTA CORPORATION
    Inventor: Sumio YAGYU
  • Patent number: 11540437
    Abstract: 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: Grant
    Filed: June 30, 2020
    Date of Patent: January 3, 2023
    Assignee: KUBOTA CORPORATION
    Inventors: Sumio Yagyu, Takao Nakagawa, Masaru Kawane, Yukifumi Yamanaka, Go Takaki
  • Patent number: 11497155
    Abstract: 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: Grant
    Filed: June 24, 2020
    Date of Patent: November 15, 2022
    Assignee: KUBOTA CORPORATION
    Inventors: Sumio Yagyu, Takashi Uchida, Yukifumi Yamanaka, Go Takaki
  • Patent number: 11479115
    Abstract: 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: Grant
    Filed: December 27, 2019
    Date of Patent: October 25, 2022
    Assignee: KUBOTA CORPORATION
    Inventors: Sumio Yagyu, Takao Nakagawa, Masaru Kawane
  • Publication number: 20220297534
    Abstract: A power transmission mechanism includes an engine including a crankshaft, a flywheel connected to the crankshaft, an electric motor including a rotor to rotate together with a rotary shaft, a damper connected to the rotary shaft and the flywheel, and a driven machine to receive power from the engine and/or the electric motor. The damper is located between the engine and the electric motor in an axial direction of the rotary shaft.
    Type: Application
    Filed: June 10, 2022
    Publication date: September 22, 2022
    Inventors: Kazuto OKAZAKI, Sumio YAGYU
  • Patent number: 11283381
    Abstract: 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: Grant
    Filed: June 30, 2020
    Date of Patent: March 22, 2022
    Assignee: KUBOTA CORPORATION
    Inventors: Masaru Kawane, Sumio Yagyu, Takao Nakagawa, Yukifumi Yamanaka, Go Takaki
  • Patent number: 11273834
    Abstract: 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: Grant
    Filed: December 27, 2019
    Date of Patent: March 15, 2022
    Assignee: KUBOTA CORPORATION
    Inventors: Sumio Yagyu, Takao Nakagawa, Masaru Kawane, Piet Jan Van Der Marel
  • Patent number: 11214152
    Abstract: 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: Grant
    Filed: June 24, 2020
    Date of Patent: January 4, 2022
    Assignee: KUBOTA CORPORATION
    Inventors: Yukifumi Yamanaka, Sumio Yagyu, Go Takaki
  • Publication number: 20210296966
    Abstract: 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: Application
    Filed: June 8, 2021
    Publication date: September 23, 2021
    Applicant: KUBOTA CORPORATION
    Inventor: Sumio YAGYU
  • Publication number: 20210203202
    Abstract: 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: Application
    Filed: October 8, 2020
    Publication date: July 1, 2021
    Applicant: KUBOTA CORPORATION
    Inventor: Sumio YAGYU
  • Patent number: 11015657
    Abstract: 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: Grant
    Filed: June 8, 2018
    Date of Patent: May 25, 2021
    Assignee: KUBOTA CORPORATION
    Inventors: Sumio Yagyu, Kazuto Okazaki
  • Publication number: 20200329632
    Abstract: 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: Application
    Filed: June 30, 2020
    Publication date: October 22, 2020
    Applicant: KUBOTA CORPORATION
    Inventors: Sumio YAGYU, Takao NAKAGAWA, Masaru KAWANE, Yukifumi YAMANAKA, Go TAKAKI
  • Publication number: 20200336092
    Abstract: 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: Application
    Filed: June 30, 2020
    Publication date: October 22, 2020
    Applicant: KUBOTA CORPORATION
    Inventors: Masaru KAWANE, Sumio YAGYU, Takao NAKAGAWA, Yukifumi YAMANAKA, Go TAKAKI
  • Publication number: 20200323127
    Abstract: 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: Application
    Filed: June 25, 2020
    Publication date: October 15, 2020
    Applicant: KUBOTA CORPORATION
    Inventors: Go TAKAKI, Sumio YAGYU, Yukifumi YAMANAKA
  • Publication number: 20200315084
    Abstract: 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: Application
    Filed: June 24, 2020
    Publication date: October 8, 2020
    Applicant: KUBOTA CORPORATION
    Inventors: Sumio YAGYU, Takashi UCHIDA, Yukifumi YAMANAKA, Go TAKAKI
  • Publication number: 20200317066
    Abstract: 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: Application
    Filed: June 24, 2020
    Publication date: October 8, 2020
    Applicant: KUBOTA CORPORATION
    Inventors: Yukifumi YAMANAKA, Sumio YAGYU, Go TAKAKI
  • Publication number: 20200189387
    Abstract: 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: Application
    Filed: December 27, 2019
    Publication date: June 18, 2020
    Applicant: KUBOTA CORPORATION
    Inventors: Sumio YAGYU, Takao NAKAGAWA, Masaru KAWANE
  • Publication number: 20200163274
    Abstract: 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: Application
    Filed: December 27, 2019
    Publication date: May 28, 2020
    Applicant: KUBOTA CORPORATION
    Inventors: Takao NAKAGAWA, Sumio YAGYU, Masaru KAWANE