Patents Assigned to Kubota Corporation
  • Patent number: 11958553
    Abstract: A working vehicle includes a steering device to steer a vehicle body, a working device connected to the vehicle body, an automatic steering controller to perform automatic steering of the steering device based on a difference between a scheduled traveling line and a position of the vehicle body, and a parameter changer to change a control parameter of the automatic steering depending on the working device connected to the vehicle body.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: April 16, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Shunsuke Miyashita, Yasuaki Morioka, Kunihiko Nishino, Kumiko Kobayashi, Misako Kawai
  • Patent number: 11957074
    Abstract: A work vehicle including a vehicle body, a pair of left and right driving wheels that movably support the vehicle body, a pair of motors capable of rotatably driving the left and right driving wheels respectively, a pair of maneuvering levers pivotally supported to the vehicle body to be pivotable about a horizontal axis extending in a vehicle body transverse direction and capable of adjusting rotational speeds of the left and right driving wheels respectively, and a pair of solid dynamic vibration absorbing portions supported to respective free end portions of the maneuvering levers and capable of suppressing vibrations of the maneuvering levers, wherein each solid dynamic vibration absorbing portion of the pair of solid dynamic vibration absorbing portions includes a weight within an elastic body, wherein the weight and the elastic body have equal longitudinal lengths.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: April 16, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Yuto Fujii, Justin McCallister, Hideki Aoki
  • Publication number: 20240116359
    Abstract: Some embodiments may include a working machine including a transportation system and one or more implements to perform one or more work tasks, the working machine further including: at least one selectively-locatable electric accessory, which comprises at least part of the transportation system or at least part of a powered implement of the one or more implements, the at least one selectively-locatable electric accessory defining a first mechanical frame connection; a frame assembly including two or more power points at two or more different locations on the frame assembly, respectively; wherein each power point defines a second mechanical frame connection to mate with the first mechanical frame connection, and wherein the at least one selectively-locatable electric accessory is operable in any of the two or more power points. Other embodiments may be disclosed and/or claimed.
    Type: Application
    Filed: September 29, 2023
    Publication date: April 11, 2024
    Applicant: Kubota Corporation
    Inventors: Joshua M. Gattis, Gerald Johnson
  • Publication number: 20240117879
    Abstract: A working machine includes: a first fluid passage fluidly connecting a traveling operation device to an actuation valve; a first traveling fluid passage; a second traveling fluid passage; a third traveling fluid passage; a fourth traveling fluid passage; a second fluid passage fluidly connecting the first fluid passage to the first traveling fluid passage; and a third fluid passage fluidly connecting the first fluid passage to the third traveling fluid passage. Each of the first, second, third, and fourth traveling fluid passages is configured so that operation fluid to be applied to a first, second, third, and fourth pressure-receiving portions flows through the first, second, third, and fourth traveling fluid passages, respectively, when a traveling operation member is operated.
    Type: Application
    Filed: December 5, 2023
    Publication date: April 11, 2024
    Applicant: KUBOTA CORPORATION
    Inventors: Daiki ABE, Kohei KURACHI, Yudai KOGA, Yuya KONISHI, Yuya TANABE
  • Patent number: 11954947
    Abstract: A monitoring system for a working machine, includes a first communicator to communicate in wireless, the first communicator being provided on the working machine including a working device and a traveling device, a second communicator to communicate with the first communicator in wireless, the second communicator being provided on a monitoring device installed in an agricultural field, a monitor to monitor the agricultural field, the monitor being provided on the monitoring device, a judgment analyzer to judge whether the working machine is in a monitoring area based on intensities of signals of the first communicator and the second communicator, and an instruction controller to instruct the monitor to start monitoring when the judgment analyzer determines that the working machine is in the monitoring area of the monitor.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: April 9, 2024
    Assignee: KUBOTA CORPORATION
    Inventor: Shuya Kaechi
  • Patent number: 11950536
    Abstract: A control lever of a working machine having a main operating frequency includes, a tube having a mass and a length extending from a first end to a second end. The tube defines a lumen extending from the second open end towards the first end of the tube. The control lever includes a rod having a predetermined mass and a length extending from a first end to a second end. The rod is fixed to the tube and is disposed in the lumen at a predetermined position with respect to the second end of the tube. In embodiments, the mass of the rod is determined based at least on the mass of the tube and the main operating frequency of the working machine, and the control lever has a natural frequency that is less than the main operating frequency of the working machine.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: April 9, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Tasuku Teraoka, Yuto Fujii
  • Patent number: 11953035
    Abstract: A working machine includes a prime mover, a hydraulic pump driven by power of the prime mover, a cooler including a cooling fan rotated by either the power of the prime mover or hydraulic fluid delivered from the hydraulic pump, and a controller configured or programmed to perform a reduction control for reducing a target fan rotation speed that is a target rotation speed of the cooling fan in response to reduction of an actual prime mover rotation speed that is an actual rotation speed of the prime mover, and to perform, after the reduction control, a restoration control for restoring the target fan rotation speed. The controller is configured or programmed to make a difference between a reduction rate of the target fan rotation speed in the reduction control and an increase rate of the target fan rotation speed in the restoration control.
    Type: Grant
    Filed: July 12, 2023
    Date of Patent: April 9, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Daiki Abe, Ryota Hamamoto, Hiroaki Nakagawa
  • Patent number: 11951827
    Abstract: The work vehicle includes a vehicle body provided with a travel device; a prime mover provided in the vehicle body; a transmission device capable of speed-changing a driving force from the prime mover and transmitting the driving force to the travel device; a transmission case housing the transmission device and being filled with lubricating oil; and a controller capable of switching between a warm-up operation mode in which a gear of the transmission device is rotated in a state in which transmission of power from the transmission device to the travel device is blocked and a travel operation mode in which the gear is rotated in a state in which the power is transmitted from the transmission device to the travel device.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: April 9, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Tsuyoshi Gono, Naoya Nihei, Keiji Takahashi, Susumu Takeoka, Shusaku Yamaguchi, Yoichi Sugihara
  • Patent number: 11950525
    Abstract: A protective member includes an attachment portion that is attached to a tractor including a mid PTO shaft and a protective frame that is supported by the attachment portion and positioned not to overlap with the mid PTO shaft in a front view to protect the mid PTO shaft, and the protective frame is positioned not to overlap with the mid PTO shaft in a side view.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: April 9, 2024
    Assignee: KUBOTA CORPORATION
    Inventor: Koji Masumoto
  • Patent number: 11951876
    Abstract: A multipurpose work vehicle according to one or more embodiments of the present invention includes a driver's seat at the center of a vehicle body in the left-right direction of the vehicle body; and an occupant's seat to the left or right of the driver's seat in the left-right direction of the vehicle body, wherein the occupant's seat is offset rearwardly relative to the driver's seat.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: April 9, 2024
    Assignee: Kubota Corporation
    Inventors: Kensuke Okabe, Kohta Nakao, Yusuke Endo
  • Patent number: 11951939
    Abstract: An anti-theft system for a working machine, includes: a start-operation tool to issue an order to start a prime mover; an information obtaining device to obtain first information and second information; and a controller device having: a certification storage to store certification information; a start processor to obtain the order issued by the start-operation tool and to start the prime mover when the first information obtained by the information obtaining device is related to the certification information; and a registration processor to perform a registration process for registering the second information as the certification information. The registration processor allows the registration process before starting of the prime mover, and stops allowing the registration process after the starting of the prime mover.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: April 9, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Ryo Ikeda, Keisuke Egashira, Ryota Ando
  • Patent number: 11951910
    Abstract: A working vehicle includes a position detector to detect a position of a vehicle body based on a signal transmitted from a positioning satellite. A mounting stay pivotally supported by a base stay includes a counter surface that opposes an upper surface of the base stay when the position detector is in a first position. The position detector is movable from the first position to a second position according to rotation of the mounting stay causing the counter surface to face upward. When the position detector is in the second position, a front portion of the mounting stay is higher than an upper end of the roof and a rear portion of the mounting stay is lower than the upper end of the roof.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: April 9, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Shinji Misaki, Sayaka Masaki
  • Publication number: 20240110358
    Abstract: A boom is configured such that, when the boom is in its fully raised position, a first section between an intermediate portion and a boom proximal portion extends upward from the boom proximal portion toward the intermediate portion and a second section between the intermediate portion and a boom distal portion extends diagonally forward and upward from the intermediate portion, and that a first straight line orthogonal to an arm support shaft and to a first cylinder support shaft and extending downward from the first cylinder support shaft passes forward of a machine body.
    Type: Application
    Filed: December 12, 2023
    Publication date: April 4, 2024
    Applicant: KUBOTA CORPORATION
    Inventor: Kazuyuki HATTA
  • Patent number: 11946227
    Abstract: A working machine includes a controller configured or programmed to perform an automatic deceleration for automatically decelerating a left traveling motor and a right traveling motor rotated at a second speed by shifting from the second speed to the first speed, and to determine a deceleration threshold that is used for judging whether the automatic deceleration has to be performed or not.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: April 2, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Kohei Nagao, Yuji Fukuda, Ryota Hamamoto, Hiroaki Nakagawa
  • Patent number: 11945498
    Abstract: A work vehicle includes a steering wheel on a rear side with respect to a display, in front of a driver seat, and that includes spokes and a ring-shaped portion connected to the spokes. An opening is between the spokes and the ring-shaped portion. The work vehicle further includes a steering controller to change a steering angle of a steerable wheel based on a wheel angle that is a rotation angle of the steering wheel about a wheel rotation shaft, and an adjuster to adjust a relationship between the wheel angle and the steering angle.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: April 2, 2024
    Assignee: KUBOTA CORPORATION
    Inventor: Hiroki Suga
  • Patent number: 11950298
    Abstract: A communication processing system for a working machine includes a communication device disposed on the working machine and configured to transmit a beacon containing machine information relating to the working machine, and a mobile terminal configured to receive the beacon, and to execute a connection processing for connecting with the communication device and an obtaining processing for obtaining the machine information, wherein the beacon includes a first beacon containing first activation information and a second beacon containing second activation information, and wherein the mobile terminal is configured, after executing the connection processing and the obtaining processing upon receiving the first beacon, not to execute the obtaining processing upon further receiving the first beacon, and to execute the same obtaining processing upon receiving the second beacon.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: April 2, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Keisuke Miura, Keisuke Egashira
  • Patent number: 11946402
    Abstract: A work vehicle includes: a first exhaust pipe to which engine exhaust is sent; and a second exhaust pipe that has an inlet having an outer diameter larger than an outlet of the first exhaust pipe, the outlet of the first exhaust pipe and the inlet of the second exhaust pipe being disposed in proximity such that the outlet of the first exhaust pipe is positioned inside the inlet of the second exhaust pipe; a partition that divides a cross section of the outlet of the first exhaust pipe into a plurality of divided regions when viewed from the flow direction and partitions the adjacent divided regions at intervals.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: April 2, 2024
    Assignee: Kubota Corporation
    Inventors: Masaru Shinya, Tatsuya Nishimura
  • Publication number: 20240102265
    Abstract: A working machine includes a machine body, a left traveling device located left on the machine body, a right traveling device located right on the machine body, and a controller configured or programmed to perform automatic deceleration to automatically reduce a first rotation speed of a left traveling motor and a second rotation speed of a right traveling motor by shifting a speed stage of each of the left and right traveling motors from a second speed stage to a first speed stage that is lower than the second speed stage. The controller is configured or programmed to: not perform the automatic deceleration when the first rotation speed or the second rotation speed is equal to or higher than a predetermined rotation speed; and perform the automatic deceleration when the first rotation speed and the second rotation speed are less than the predetermined rotation speed.
    Type: Application
    Filed: December 6, 2023
    Publication date: March 28, 2024
    Applicant: KUBOTA CORPORATION
    Inventors: Yuji FUKUDA, Kohei NAGAO
  • Patent number: D1023071
    Type: Grant
    Filed: April 4, 2023
    Date of Patent: April 16, 2024
    Assignee: Kubota Corporation
    Inventors: Yutaka Araki, Hiroyuki Sakai, Fuminori Sato
  • Patent number: D1023074
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: April 16, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Taiki Furuki, Ryo Masuda, Yuya Kusaka, Ryohei Sumiyoshi, Junichi Murakami, Takahiro Kubo