Patents Assigned to Kubota Corporation
  • Patent number: 10352019
    Abstract: A front loader includes a boom, a first pivotal shaft disposed on a tip portion of the boom, a bucket supported by the first pivotal shaft to be capable of performing a shoveling movement and a dumping movement, a boom cylinder to swing the boom, a bucket cylinder to move the bucket to make the bucket perform the shoveling movement and the dumping movement, a control valve to be switched to any one of a first state supplying an operation fluid to the bucket cylinder and a second state stopping supplying the operation fluid to the bucket cylinder, a first movable member to turn around the first pivotal shaft in accordance with the movement of the bucket, and a wire connecting the first movable member to the control valve.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: July 16, 2019
    Assignee: KUBOTA CORPORATION
    Inventors: Robert Stewart Boyd, Daniel Underwood, Carlos Cabrera
  • Patent number: 10352335
    Abstract: A hydraulic system of a work machine includes a first hydraulic actuator, a first control valve, a first oil passage, a second hydraulic actuator, a second control valve, a second oil passage, and a bypass oil passage. The first control valve is connected to the first hydraulic actuator to control the first hydraulic actuator. The first oil passage is connected to the first control valve to supply hydraulic oil to the first control valve. The second control valve connected to the second hydraulic actuator to control the second hydraulic actuator. The second oil passage connects the second control valve and the first hydraulic actuator via the first control valve. Hydraulic oil returning from the first hydraulic actuator to the first control valve is to be supplied to the second control valve through the second oil passage. The bypass oil passage connects the first oil passage and the second oil passage.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: July 16, 2019
    Assignee: KUBOTA CORPORATION
    Inventors: Yuji Fukuda, Kazuyoshi Arii, Ryohei Sumiyoshi, Keigo Honda
  • Patent number: 10347956
    Abstract: A power source apparatus includes a battery module including a plurality of battery cells, a housing forming a housing chamber to house and arrange a plurality of the battery modules in parallel, a blower to blow air, an inter-module path formed between the battery modules adjacent to each other; and an inter-cell path formed between the battery cells adjacent to each other. The housing includes an intake portion to take the air into the housing chamber, and a sending portion to send the air from the housing chamber. The inter-module path has a first inter-module path serving as a path into which the air is introduced. The sending portion is separated, adjacent to at least one battery module, from the first inter-module path such that the air flows in the inter-cell paths of a plurality of the battery modules arranged next to the first inter-module path and adjacent each other.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: July 9, 2019
    Assignees: DENSO CORPORATION, KUBOTA CORPORATION
    Inventors: Yoshimitsu Inoue, Yuki Shimoike, Shinichi Kawabata, Masahiko Nomura, Hiroaki Nakagawa
  • Patent number: 10344452
    Abstract: A cabin includes: a panel disposed on a side of an operator seat, the panel including: a plurality of cross members extending in a first direction; and a plurality of transverse members intersecting with the plurality of cross members each other and extending in a second direction; a glass panel disposed on a side of the panel; a window frame disposed on the glass panel; a window panel disposed on the window frame, the window panel being configured to move in the first direction or in the second direction; a projecting member disposed on a side of the window panel, the side being an identical side to the operator seat, the projecting member being configured to move together with the window panel; and a guide portion configured to accept insertion of the projecting member and to limit a moving distance of the window panel.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: July 9, 2019
    Assignee: KUBOTA CORPORATION
    Inventors: Yuji Yamashita, Hiroaki Kurachi, Masahiro Kuroda, Hiroyuki Anami, Toshihiko Takemura, Satoshi Tajima, Kunihiro Suzuki, Hayato Kawano, Hideo Imai
  • Patent number: 10343936
    Abstract: A membrane casing that watertightly houses a membrane element for filtering raw water includes a tubular casing main body, a lid body, and a pressing mechanism. The casing main body houses a membrane element. The lid body fits an opening end of the casing main body and is movable in the axial direction of the casing main body while maintaining the attitude and while securing watertightness with the casing main body. The pressing mechanism and presses the lid body to press and hold the membrane element housed in the casing main body. The membrane casing has a simple configuration capable of watertightly securing using a predetermined pressing force by accommodating variations in size of the membrane element, even if the membrane casing cannot be formed into a cylindrical shape.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: July 9, 2019
    Assignee: KUBOTA CORPORATION
    Inventors: Keishi Watanabe, Shintaro Nishimoto, Tetsuya Uenaka
  • Patent number: 10343513
    Abstract: A work vehicle is disclosed that includes an elastic support mechanism for supporting an exhaust muffler. The elastic support mechanism includes a support platform member, an elastic cylindrical members and an bar-shaped member. The support platform member is supported by a rear-linking frame bar to adjust a position of the support platform member along one of lateral and longitudinal directions of the body frame. An elastic cylindrical member supported by one of the support platform member and the exhaust muffler. The elastic cylindrical member has an axis extending along the other of the lateral and longitudinal directions, and is supported at a single position, in a direction of the axis, of said one of the support platform member and the exhaust muffler. A bar-shaped member supported by the other of the support platform member and the exhaust muffler is fitted into the elastic cylindrical member to be supported by the elastic cylindrical member.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: July 9, 2019
    Assignee: Kubota Corporation
    Inventors: Yoshinori Oyama, Kimihiro Kai, Hiroshi Takagi, Toshiki Ono, Kohta Nakao, Takafumi Komatsu, Kensuke Okabe, Yuki Nakaoka
  • Patent number: 10337173
    Abstract: A work machine includes an engine, a pilot pump to be driven by the engine to supply a pilot fluid, an operation pump to receive a first pilot fluid to change an output power in accordance with the first pilot fluid, a pilot fluid tube provided between the pilot pump and the operation pump, an operation valve connected to the pilot fluid tube to output the first pilot fluid, the first pilot fluid being a part of the pilot fluid supplied from the pilot fluid, a temperature sensor to measure a temperature of at least one of an operation fluid including the pilot fluid, a cooling water, an engine oil, and an outside air, and a pressure controller to control a first pilot pressure of the pilot fluid outputted from the operation valve when a temperature measured by the temperature sensor is equal to or higher than a first temperature.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: July 2, 2019
    Assignee: KUBOTA CORPORATION
    Inventors: Yuji Fukuda, Ryosuke Kinugawa, Hiroaki Nakagawa
  • Patent number: 10335744
    Abstract: A sheet filter membrane is arranged on a surface of a filter plate of a thermoplastic resin, and a plurality of projections provided in a hot plate is pressed against the filter plate above a periphery of the filter membrane with different timing for each of the projections to abut on the filter membrane. A plurality of recessed bonding portions with different depths are thus formed in the filter plate, and the filter membrane is bonded to the filter plate by heat welding in each of the recessed bonding portions. Sealing is therefore provided between the filter membrane and the filter plate along the periphery of the filter membrane.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: July 2, 2019
    Assignee: Kubota Corporation
    Inventors: Kimihiro Ishikawa, Yasuyuki Okada
  • Patent number: 10334777
    Abstract: An electric work vehicle includes a carrier provided separately from a vehicle body for mounting/dismounting a battery, a carrier storage section provided in the vehicle body for attaching the carrier to the vehicle body, and an attachment mechanism for attaching/detaching the carrier to/from the carrier storage section.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: July 2, 2019
    Assignee: Kubota Corporation
    Inventors: Katsuhiko Uemura, Hirokazu Ito
  • Patent number: 10336377
    Abstract: A work vehicle including: a vehicle body frame; a prime mover part located on a front or rear part of the vehicle body frame; a bonnet configured to open and close by swinging, and covering the prime mover part; and an assist unit configured to assist the bonnet to operate to open. A lateral end portion of the vehicle body frame is provided with a first linkage part with which the assist unit is linked. A lateral end portion of a lower end part of the bonnet, which is located closer to an end cover than the first linkage part is, is provided with a second linkage part with which the assist unit is linked. The assist unit is provided with an expansion/contraction mechanism biased so as to expand, and is located laterally outside the prime mover part and spans the first linkage part and the second linkage part.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: July 2, 2019
    Assignee: Kubota Corporation
    Inventors: Takeshi Komorida, Koichiro Matsumoto, Masaki Takaoka, Arisa Kimura, Tasuku Teraoka, Azusa Furihata, Tomohisa Yamamoto, Toshiki Kanai, Nobuyuki Yamashita, Masayuki Akita, Takashi Kumashiro, Ryo Matsumoto, Hiroki Nagai, Tatsuki Kago, Akihito Mihara
  • Publication number: 20190200224
    Abstract: A communication system for a working machine includes a communication device disposed on the working machine, and a mobile terminal to be connected to the communication device. The communication device transmits a service universal unique identifier (UUID) to the mobile terminal. The mobile terminal transmits unique information to the communication device. The communication device issues connection request to the mobile terminal after receiving the unique information. The mobile terminal requests transmission of authentication information after issuing the connection request, the authentication information being used for paring. The communication device transmits the authentication information to the mobile terminal in response to the request. And, the mobile terminal judges whether the paring is established based on the authentication information, and executes a program based on the service universal unique identifier (UUID) when the paring is established.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 27, 2019
    Applicant: KUBOTA CORPORATION
    Inventors: Ryosuke KINUGAWA, Keisuke EGASHIRA, Keisuke MIURA
  • Publication number: 20190194903
    Abstract: A front loader includes a working tool and an attachment body to which the working tool is attached, including a lock pin configured to attach and fix the working tool, a lock lever configured to move the lock pin between a releasing position and an attaching position, and a latching portion having a retaining mechanism configured to retain the lock lever at the releasing position and another mechanism configured to move the lock lever to the attaching position.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 27, 2019
    Applicant: KUBOTA CORPORATION
    Inventors: Ryuichi NADAOKA, Yuta OZEKI, Masaki ABE, Koshiro HIRAKAWA
  • Publication number: 20190200403
    Abstract: A communication device for a working machine disposed on the working machine and configured to be connected to a mobile terminal, includes an identifier setting circuit configured to set at least one of a first program identifier and a second program identifier, and a first communicating circuit configured to transmit, to the mobile terminal, the first program identifier set by the identifier setting circuit with a first beacon and the second program identifier set by the identifier setting circuit with a second beacon, the first communicating circuit being configured to transmit the second beacon to the mobile terminal while the mobile terminal executes a first program after receiving the first beacon, the first program corresponding to the first program identifier being included in the first beacon.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 27, 2019
    Applicant: Kubota Corporation
    Inventors: Ryosuke KINUGAWA, Keisuke Egashira, Keisuke Miura
  • Publication number: 20190195207
    Abstract: A hydraulic system for a work machine includes an operation member, a prime mover, a hydraulic pump driven by the prime mover, the hydraulic pump configured to output an operation fluid, a first temperature sensor to measure a temperature of the operation fluid, a first fluid tube connected to the hydraulic pump, an operation valve connected to the first fluid tube, the operation valve configured to control, in accordance with an operation extent of the operation member, a pressure of the outputted operation fluid, a hydraulic apparatus driven by the operation fluid outputted from the operation valve, a second hydraulic tube connecting the operation valve to the hydraulic apparatus, a discharge fluid tube to discharge the operation fluid included in the second fluid tube; and an actuation valve disposed on the discharge fluid tube, the actuation valve configured to control an aperture of the actuation valve based on the temperature.
    Type: Application
    Filed: February 28, 2019
    Publication date: June 27, 2019
    Applicant: KUBOTA CORPORATION
    Inventors: Yuji FUKUDA, Kazuyoshi ARII, Ryohei SUMIYOSHI
  • Publication number: 20190193661
    Abstract: A work vehicle includes a front wheel unit and a rear wheel unit attached to a vehicle body frame, a power source mounted at a rear portion of the vehicle body frame, a ROPS bracket fixed to the vehicle body frame at a region thereof forwardly of the power source and a ROPS. this ROPS includes a pair of left and right upright portions and a crossbar connecting the upright portions at upper portions thereof. Lower end portions of the pair of upright portions are supported to the ROPS bracket to be pivotable toward the power source about a horizontal axis extending in a vehicle-body transverse direction.
    Type: Application
    Filed: December 22, 2017
    Publication date: June 27, 2019
    Applicant: KUBOTA CORPORATION
    Inventors: Akira MINOURA, Hiroyuki TADA
  • Publication number: 20190200276
    Abstract: A communication device for a working machine disposed on the working machine and configured to be connected to a mobile terminal, includes a first communication circuit to transmit, to the mobile terminal, an application identifier with a beacon conforming to Bluetooth Low Energy (a registered trademark) and to transmit data to the mobile terminal after the mobile terminal activates an application corresponding to an application identifier, the data relating to the working machine and corresponding to the application.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 27, 2019
    Applicant: KUBOTA CORPORATION
    Inventors: Ryosuke KINUGAWA, Keisuke EGASHIRA, Keisuke MIURA
  • Publication number: 20190200277
    Abstract: A communication system for a working machine includes a communication device disposed on the working machine, and a mobile terminal to be connected to the communication device, the mobile terminal having a first application and a second application. The communication device has a first communication circuit to transmit, to the mobile terminal, a beacon including a first application identifier corresponding to the first application, and a second application identifier corresponding to the second application. And, the mobile terminal has a calculation circuit to execute the second application after the first application is activated.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 27, 2019
    Applicant: KUBOTA CORPORATION
    Inventors: Ryosuke KINUGAWA, Keisuke EGASHIRA, Keisuke MIURA
  • Patent number: 10328394
    Abstract: A low-cost membrane cartridge and a low-cost method for producing a membrane cartridge, in which fatigue durability can be increased with a simple structure, are provided by focusing on a bonding position of the filtration membrane onto the filtration plate. The membrane cartridge includes a filtration membrane disposed on both faces of a filtration plate made of a thermoplastic resin, such that a joining portion provided at the periphery of the filtration membrane is joined to the filtration plate. At least an inner edge portion of the joining portion has a downward inclination with respect to the surface of the filtration plate inside of the inner edge portion at an angle in a range of 10 to 45 degrees toward an outer peripheral edge of the filtration membrane. The joining portion is pressed and welded using a heating plate or an ultrasonic horn having such an inclined surface.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: June 25, 2019
    Assignee: Kubota Corporation
    Inventors: Kimihiro Ishikawa, Motofumi Tajima, Makoto Takahashi, Kenichi Ohnishi, Yasunobu Okajima
  • Patent number: 10327383
    Abstract: A mid-mount mower has a mower unit mounted under a vehicle body between front wheels and rear wheels. The mower includes a lift link mechanism having a front link and a rear link, an intermediate structure interconnecting one end of the front link and one end of the rear link via a pivot axis, a blade housing having an engaged portion engageable with an engaging potion of the intermediate structure and a guide face configured to guide the engaging portion ad the engaged portion to an engaging position so as to establish connection between the blade housing placed on a ground surface and the intermediate structure in association with a movement of the vehicle body in a front/rear direction.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: June 25, 2019
    Assignee: Kubota Corporation
    Inventors: Hiroyuki Tada, Akira Minoura, Takeshi Komorida, Azusa Furihata, Hiroshi Kawabata, Ryo Matsumoto
  • Patent number: D854056
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: July 16, 2019
    Assignee: Kubota Corporation
    Inventors: Gen Futagami, Taiki Furuki