Patents Assigned to Kubota Corporation
  • Publication number: 20210137015
    Abstract: A yield calculation system comprises a position sensor configured to detect a position. A baler comprises a bale chamber in which crop material is to be formed into a bale, a volume measurement sensor provided in the bale chamber and configured to measure a volume of the bale in the bale chamber, the volume corresponding to the position detected by the position sensor, and a moisture measurement sensor provided in the bale chamber and configured to measure a moisture amount in the bale, the moisture amount corresponding to the position detected by the position sensor. Circuitry is configured to calculate, based on the volume of the bale and the moisture amount corresponding to the position, a yield corresponding to the position by excluding the moisture amount from an amount of the bale.
    Type: Application
    Filed: November 4, 2020
    Publication date: May 13, 2021
    Applicant: Kubota Corporation
    Inventors: Takeru IBUKI, Hirokazu SASAMOTO, Sakura SASAKURA, Yasuhiro NISHIDA
  • Publication number: 20210139089
    Abstract: A working vehicle includes an operator seat, an armrest arranged on a side of the operator seat, and a speed shifter to change a traveling speed. The armrest includes an operation lever to be swung back and forth to cause the speed shifter to perform acceleration and deceleration, and an operation switch to be pressed to cause the speed shifter to perform acceleration and deceleration.
    Type: Application
    Filed: October 27, 2020
    Publication date: May 13, 2021
    Applicant: KUBOTA CORPORATION
    Inventors: Takashi KOSAKI, Takuya INAMORI, Yoshihiko KUROSHITA, Michita KONO, Yuji IMANAGA
  • Patent number: 11001990
    Abstract: A working machine includes a branched tube connected to a branched portion branching from an operation fluid tube, a plurality of input tubes connected to the second actuator valves, a plurality of output tubes connected to a pressure receiver portion of the second hydraulic device, a main tube connected to the third actuator valve, and a relay device, and the relay device includes a plurality of input ports connected to the plurality of input tubes, a plurality of output ports connected to the plurality of output tubes, a plurality of first flow lines connecting between the plurality of input ports and the plurality of input ports, a main port connected to the main tube, a branched port connected to the branched tube, and a second flow line arranged between the plurality of first fluid lines to connect between the main port and the branched port.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: May 11, 2021
    Assignee: Kubota Corporation
    Inventors: Yuji Fukuda, Keigo Honda, Takahiro Usami
  • Patent number: 10995843
    Abstract: A work vehicle includes a stepless speed changer device having a drive pulley receiving input of power of an engine, a driven pulley, and an endless rotary body wound around and entrained between the the drive pulley and the driven pulley and an accommodating body having an accommodation space for accommodating the drive pulley, the driven pulley and the endless rotary body. The accommodation space includes an air passage for causing air introduced from the outside to flow from the driven pulley side to the drive pulley side to be eventually discharged to the outside.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: May 4, 2021
    Assignee: Kubota Corporation
    Inventors: Hiroki Bessho, Noriyasu Honjo, Jun Yoshida, Hiroshi Takagi
  • Patent number: 10995722
    Abstract: A work vehicle includes an engine controller for driving an engine, a power supply line, a power supply control line, and a display signal line. When a check switch switchable into a safe position corresponding to safe drive of the engine and a non-safe position is switched to the safe position, the power supply control line renders a power supply relay ON. The display signal line transmits a signal indicative of the switched state of the check switch to a display.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: May 4, 2021
    Assignee: KUBOTA CORPORATION
    Inventor: David Spitz
  • Publication number: 20210123212
    Abstract: A working machine includes a hydraulic device, an operation valve to supply operation fluid to operate the hydraulic device and to vary the operation fluid to be supplied to the hydraulic device, an operation device having an operation member supported swingably, the operation device being configured to output an operation signal in accordance with an operation amount of the operation member, and a controller including a swing calculator to calculate an evaluation value representing a degree of swinging of the operation member, and a control signal generator to generate a control signal based on the evaluation value and the operation signal.
    Type: Application
    Filed: October 21, 2020
    Publication date: April 29, 2021
    Applicant: KUBOTA CORPORATION
    Inventors: Masahiro TOYAMA, Ryuki NISHIMOTO, Yuji FUKUDA, Kohei NAGAO, Ryota HAMAMOTO, Hiroaki NAKAGAWA
  • Publication number: 20210123214
    Abstract: A working machine includes a switching valve to switch between a first state and a second state, the first state allowing a revolving speed of a traveling motor to be a first speed, the second state allowing the revolving speed of the traveling motor to be a second speed, and a controller device to reduce the revolving speed of the prime mover in either acceleration to switch from the first state to the second state or deceleration to switch from the second state to the first state. The controller device associates a return timing with a switch timing in either the acceleration or deceleration, the return timing allowing an actual revolving speed of a prime mover to start returning toward a first target revolving speed after the actual revolving speed is reduced, the switch timing allowing the switching valve to switch to either an acceleration side or a deceleration side.
    Type: Application
    Filed: October 22, 2020
    Publication date: April 29, 2021
    Applicant: KUBOTA CORPORATION
    Inventors: Yuji FUKUDA, Ryota HAMAMOTO, Jun TOMITA
  • Publication number: 20210123215
    Abstract: A working machine includes a machine body, a prime mover, a traveling device mounted on the machine body, a traveling motor to provide a power to the traveling device and to switch between a first speed and a second speed higher than the first speed, a traveling pump to be driven by the prime mover and to supply operation fluid to the traveling motor, and a controller device including an automatic shifter to automatically shift the traveling motor to the first speed or to the second speed, a timer to count an elapsed time from the automatically shifting, and a shift prohibitor to prohibit the automatically shifting by the automatic shifter when the elapsed time counted by the timer is less than a threshold.
    Type: Application
    Filed: October 21, 2020
    Publication date: April 29, 2021
    Applicant: KUBOTA CORPORATION
    Inventors: Yuji FUKUDA, Ryota HAMAMOTO, Jun TOMITA
  • Publication number: 20210122231
    Abstract: The disclosure provides a work vehicle in which clogging of a filter of an air cleaner with snow can be suppressed. The work vehicle includes: a radiator that cools cooling water for an engine; an air cleaner that cleans air to be fed to the engine; and an inlet hose that has an aspiration port open on a rear side of the radiator and leads the air from the aspiration port to the air cleaner. The radiator includes a shroud having an opening in which a fan of the engine is disposed and the aspiration port is disposed not to overlap with the opening of the shroud in back view.
    Type: Application
    Filed: September 21, 2020
    Publication date: April 29, 2021
    Applicant: KUBOTA CORPORATION
    Inventors: Ryosuke TANAKA, Satoru YAMANAKA
  • Publication number: 20210123206
    Abstract: A hydraulic system includes a first supply line connecting a boom control valve and a bottom side of a boom cylinder, a second supply line connecting the boom control valve and a rod side of the boom cylinder, a leveling switch valve having: a first operating position allowing a leveling operation of a working tool; and a first stopping position allowing the leveling operation to stop, a ride controller including: a ride-control switch valve connected to a branched fluid line branched from the first supply line; and an accumulator configured to perform an anti-vibrating operation for suppressing a pressure fluctuation of the boom cylinder, and a drain fluid line to discharge operation fluid in a downstream section extending from the leveling switch valve to the rod side of the boom cylinder in the second supply line when the leveling switch valve is switched to the first stopping position.
    Type: Application
    Filed: October 22, 2020
    Publication date: April 29, 2021
    Applicant: KUBOTA CORPORATION
    Inventor: Yuji FUKUDA
  • Patent number: 10989541
    Abstract: A travel route generation device includes circuitry configured to calculate positions of a starting point, an end point, and intermediate points from a start vehicle position, an end vehicle position, and intermediate vehicle positions, respectively, based on a distance from a contour point to a reference point. The circuitry is configured to define the shape of the target work region by calculating a line connecting the starting point, the intermediate points, and the end point, the line defining the shape of the target work region. The circuitry is configured to generate a travel route along which the work vehicle is to travel in the target work region.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: April 27, 2021
    Assignee: KUBOTA CORPORATION
    Inventors: Yasuhisa Uoya, Izuru Shimamoto, Kenji Tamatani, Megumi Suzukawa, Atsushi Shinkai, Kazuo Sakaguchi
  • Patent number: 10988185
    Abstract: A fender support structure includes a base member that rotates in accordance with a steering of a front wheel, a cover member that is relatively rotatable with respect to the base member and that supports a front wheel fender covering the front wheel, a holding mechanism that is accommodated in the base member and the cover member and that generates a holding force to hold a relative rotational position of the cover member relative to the base member at a predetermined initial position, and a regulating mechanism that regulates a rotation of the cover member in accordance with a steering of the front wheel against the holding force when a steering angle of the front wheel becomes a predetermined value or more in a left direction and a right direction.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: April 27, 2021
    Assignee: KUBOTA CORPORATION
    Inventors: Akihiro Asada, Hiroki Isaka, Taichi Muramatsu, Keisuke Shiiba
  • Publication number: 20210114451
    Abstract: A working machine includes a support bracket attached to a machine body, a first mounting member provided to the support bracket and formed of an elastic member, a first cooler and a second cooler arranged in parallel to a horizontal direction and mounted on the support bracket with the first mounting member, a fitting bracket detachably fitted to upper portions of the first and second coolers, and a second mounting member arranged between the fitting bracket and the first and second coolers and formed of elastic member.
    Type: Application
    Filed: December 16, 2020
    Publication date: April 22, 2021
    Applicant: KUBOTA CORPORATION
    Inventors: Tatsuro YAMAMOTO, Yoshiyuki ENOMOTO, Akira KOMUKAI, Daisuke YOSHIDA, Masahiro YAMAMOTO, Toyoharu HASHIMA
  • Patent number: 10982412
    Abstract: A hydraulic system includes: a boom cylinder; a working tool cylinder; a boom control valve; a working tool control valve; first and second fluid tubes through which operation fluid is supplied to the boom cylinder; third and fourth fluid tubes through which operation fluid is supplied to the working tool cylinder; a first relief valve provided in a first bypass fluid tube and configured to allow the operation fluid to flow from the fourth fluid tube toward the first fluid tube and to block the operation fluid flowing from the first fluid tube toward the fourth fluid tube; and a second relief valve provided in a second bypass fluid tube and configured to allow the operation fluid to flow from the third fluid tube toward the second fluid tube and to block the operation fluid flowing from the second fluid tube toward the third fluid tube.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: April 20, 2021
    Assignee: KUBOTA CORPORATION
    Inventors: Robert Stewart Boyd, Kosuke Oyama
  • Patent number: 10980177
    Abstract: A combine harvester includes a conveyance mechanism for conveying grains obtained by a thresher for threshing grain culms reaped from a field to a grain tank, a measurer (340) for measuring the amount of grain conveyed to the grain tank as a conveyed yield, a yield assignment calculator (631) for calculating a minimal section yield, which is a yield per minimal section, by assigning the conveyed yield to a minimal section in the field, a grain conveyance state detector (632) for detecting a grain conveyance state of the conveyance mechanism (7), a yield corrector (633) for correcting the minimal section yield in accordance with the grain conveyance state, and a yield distribution data generator (661) for generating yield distribution data that represents a yield distribution in the field, based on the minimal section yield.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: April 20, 2021
    Assignee: Kubota Corporation
    Inventors: Mao Ueda, Yoshimasa Ando, Kazuhiro Takahara, Mitsuhiro Seki
  • Patent number: 10982304
    Abstract: The present invention provides a Co-free heat-resistant alloy for a hearth metal member that has properties superior to or equal to those of Co-containing heat resistant steel. The heat-resistant alloy for a hearth metal member according to the present invention is a heat-resistant alloy used in a hearth metal member of a steel heating furnace, the heat resistant alloy containing: 0.05% to 0.5% of C; more than 0% and 0.95% or less of Si, where 0.05%?C+Si?1.0%; more than 0% and 1.0% or less of Mn; 40% to 50% of Ni; 25% to 35% of Cr; 1.0% to 3.0% of W; and 10% or more of Fe and inevitable impurities as the balance, with all percentages being in mass %. The heat-resistant alloy for a hearth metal member may further contain 0.05% to 0.5% of Ti and/or 0.02% to 1.0% of Zr, with all percentages being in mass %.
    Type: Grant
    Filed: September 4, 2017
    Date of Patent: April 20, 2021
    Assignee: KUBOTA CORPORATION
    Inventors: Yohei Enjo, Motoyuki Matsubara, Yuki Hayase
  • Patent number: 10986674
    Abstract: A communication processing system for a working machine, includes a communication device disposed on the working machine, the communication device having a first communicator to transmit a first beacon, and a mobile terminal having a second communicator to be connected to the communication device when receiving the first beacon, the communication device having transmitted the first beacon. The first communicator transmits a second beacon other than the first beacon to the mobile terminal connected to the communication device in accordance with the first beacon.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: April 20, 2021
    Assignee: KUBOTA CORPORATION
    Inventors: Keisuke Miura, Keisuke Egashira
  • Patent number: 10981474
    Abstract: A seat of a work vehicle includes a seatback, a seat cushion and an air handling system incorporated within the seatback. The air handling system includes an air circulation space formed inside the seatback, an air handling device disposed in the air circulation space, an inlet portion formed in a top face of the seatback for letting in ambient air into the air circulation space and an outlet portion formed in a lateral portion of the seatback for discharging handled air handled by the air handling device to an area forwardly of the seatback in a vehicle body transverse direction.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: April 20, 2021
    Assignee: KUBOTA CORPORATION
    Inventors: Masato Asahara, Hideki Aoki, Akira Minoura
  • Patent number: D917368
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: April 27, 2021
    Assignee: KUBOTA CORPORATION
    Inventors: Tomonori Kaneko, Wataru Sasaki
  • Patent number: D918275
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: May 4, 2021
    Assignee: Kubota Corporation
    Inventors: Ryo Masuda, Suguru Shiiguchi