Patents by Inventor Hiroyuki Azuma

Hiroyuki Azuma 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).

  • Publication number: 20240094234
    Abstract: The present invention controls liquid shaking during transportation while maintaining high-precision with respect to the stopping position of a specimen at the time of device start-up.
    Type: Application
    Filed: November 10, 2021
    Publication date: March 21, 2024
    Inventors: Hiroyuki KOBAYASHI, Satoru KANEKO, Takahiro SUZUKI, Yasuaki AOYAMA, Ryosuke HOSHI, Hiroshi WATANABE, Shinji AZUMA
  • Patent number: 11933022
    Abstract: A tractor includes a working motor, a work machine including a roller configured to rotate by an output from the working motor, a support mechanism configured to support the work machine such that a working posture and a retracting posture are achievable, and a control device. The control device executes: an adherence amount acquisition process of acquiring an estimated adherence amount as an estimated value for the amount of mud attached to the roller; and a mud removal process of, when the estimated adherence amount is equal to or more than a determination adherence amount, removing the mud from the roller by driving the working motor in a state where the work machine takes the retracting posture.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: March 19, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Sugo, Masaki Numakura, Makoto Hirai, Taiga Higuchi, Tomohiro Sato, Hiroyuki Azuma
  • Patent number: 11881062
    Abstract: Provided is a control device of a working vehicle including a prime mover and a driving mechanism that drives an implement based on power of the prime mover, wherein the control device is configured to obtain a steering angle of the working vehicle, and detect switching between tasks performed by the working vehicle in a farm field, when the steering angle is equal to or greater than a predetermined angle indicating the switching between tasks.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: January 23, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Sugo, Makoto Hirai, Masaki Numakura, Tomohiro Sato, Taiga Higuchi, Hiroyuki Azuma
  • Patent number: 11519375
    Abstract: A hybrid vehicle includes: an engine; a motor; a drive system battery connected to a drive system power line; an auxiliary system battery connected to an auxiliary system power line; a bidirectional power converter configured to step down power on the drive system power line to supply the stepped-down power to the auxiliary system power line, and configured to boost power on the auxiliary system power line to supply the boosted power to the drive system power line; and a control device. The control device is configured to, upon a cold start in which the engine is started, control the engine, the motor, and the bidirectional power converter to cause the motor to crank the engine while causing the bidirectional power converter to boost the power on the auxiliary system power line to supply the boosted power to the drive system power line.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: December 6, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tatsuki Saito, Hiroyuki Azuma
  • Publication number: 20220319248
    Abstract: Provided is a control device of a working vehicle including a prime mover and a driving mechanism that drives an implement based on power of the prime mover, wherein the control device is configured to obtain a steering angle of the working vehicle, and detect switching between tasks performed by the working vehicle in a farm field, when the steering angle is equal to or greater than a predetermined angle indicating the switching between tasks.
    Type: Application
    Filed: March 29, 2022
    Publication date: October 6, 2022
    Inventors: Yuki SUGO, Makoto HIRAI, Masaki NUMAKURA, Tomohiro SATO, Taiga HIGUCHI, Hiroyuki AZUMA
  • Publication number: 20220282452
    Abstract: A tractor includes a working motor, a work machine including a roller configured to rotate by an output from the working motor, a support mechanism configured to support the work machine such that a working posture and a retracting posture are achievable, and a control device. The control device executes: an adherence amount acquisition process of acquiring an estimated adherence amount as an estimated value for the amount of mud attached to the roller; and a mud removal process of, when the estimated adherence amount is equal to or more than a determination adherence amount, removing the mud from the roller by driving the working motor in a state where the work machine takes the retracting posture.
    Type: Application
    Filed: February 25, 2022
    Publication date: September 8, 2022
    Inventors: Yuki SUGO, Masaki NUMAKURA, Makoto HIRAI, Taiga HIGUCHI, Tomohiro SATO, Hiroyuki AZUMA
  • Patent number: 11331605
    Abstract: A urea water tank (11) is provided with a unit insertion opening (12H) that is disposed on a top surface part (12A) of a tank body (12) and opens more largely than an external dimension (D2) of a sensor unit (20), a sensor mounting member (16) that is disposed on the top surface part (12A) of the tank body (12) and closes the unit insertion opening (12H), and a filter which is formed as a tubular body to surround the sensor unit (20), and inserted in the unit insertion opening (12H) of the tank body (12) from a lower end (24A4)-side, and having an upper end (24A3) mounted on the top surface part (12A) of the tank body (12) by using the sensor mounting member (16).
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: May 17, 2022
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Hiroyuki Azuma, Nobuei Ariga, Tsuyoshi Noi
  • Publication number: 20210394741
    Abstract: A hybrid vehicle includes: an engine; a motor; a drive system battery connected to a drive system power line; an auxiliary system battery connected to an auxiliary system power line; a bidirectional power converter configured to step down power on the drive system power line to supply the stepped-down power to the auxiliary system power line, and configured to boost power on the auxiliary system power line to supply the boosted power to the drive system power line; and a control device. The control device is configured to, upon a cold start in which the engine is started, control the engine, the motor, and the bidirectional power converter to cause the motor to crank the engine while causing the bidirectional power converter to boost the power on the auxiliary system power line to supply the boosted power to the drive system power line.
    Type: Application
    Filed: April 28, 2021
    Publication date: December 23, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tatsuki SAITO, Hiroyuki AZUMA
  • Publication number: 20210220764
    Abstract: A urea water tank (11) is provided with a unit insertion opening (12H) that is disposed on a top surface part (12A) of a tank body (12) and opens more largely than an external dimension (D2) of a sensor unit (20), a sensor mounting member (16) that is disposed on the top surface part (12A) of the tank body (12) and closes the unit insertion opening (12H), and a filter which is formed as a tubular body to surround the sensor unit (20), and inserted in the unit insertion opening (12H) of the tank body (12) from a lower end (24A4)-side, and having an upper end (24A3) mounted on the top surface part (12A) of the tank body (12) by using the sensor mounting member (16).
    Type: Application
    Filed: March 31, 2017
    Publication date: July 22, 2021
    Inventors: Hiroyuki AZUMA, Nobuei ARIGA, Tsuyoshi NOI
  • Publication number: 20200232118
    Abstract: A substrate for surface acoustic wave element includes: a magnesium/lithium niobate single crystal in which an atomic ratio between Li and Nb satisfies 0.9048?(Li/Nb)?0.9685, and whose Mg content proportion is from 1% by mole or more to 9% by mole or less; or a magnesium/lithium tantalate single crystal in which an atomic ratio between Li and Ta satisfies 0.9048?(Li/Ta)?0.9685, and whose Mg content proportion is from 1% by mole or more to 9% by mole or less.
    Type: Application
    Filed: June 27, 2017
    Publication date: July 23, 2020
    Applicant: YAMAJU CERAMICS CO., LTD.
    Inventors: Ietaka SAHASHI, Takejji SASAMATA, Hideki OHASHI, Masato KURACHI, Toru YAGI, Hiroyuki AZUMA, Naofumi KAJITANI
  • Patent number: 10179581
    Abstract: In a hybrid vehicle configured such that a sun gear, a carrier and a ring gear of a planetary gear are respectively connected with a rotating shaft of a motor MG1, a crankshaft of an engine and a driveshaft and that a motor MG2 is connected with the driveshaft, when a required braking force that is to be output to the driveshaft is equal to or less than a reference value Tref in an accelerator-off state, the braking force by engine braking is output to the driveshaft by motoring of the engine by the motor MG1. When the required braking force becomes greater than the reference value Tref, on the other hand, the power output from the engine by load operation of the engine in a reverse rotating direction is output as the braking force to the driveshaft.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: January 15, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroyuki Azuma, Tatsuki Saitoh
  • Patent number: 9777611
    Abstract: An inlet port (17A) of a first exhaust gas purifying device (16) is provided on a side opposite to an engine (8) by sandwiching an axis (O1-O1) of a cylindrical body (17) of the first exhaust gas purifying device (16). An exhaust pipe (26) connecting the engine (8) and the first exhaust gas purifying device (16) is constituted by a lateral pipe line (27) extending in a left and right direction of an upper revolving structure (3) on a front side of the first exhaust gas purifying device (16) and having a bellows pipe (28) in the middle for absorbing relative displacement between the engine (8) and the first exhaust gas purifying device (16) and a bent pipe line (29) bent having a U-shape rearward from a tip end side of the lateral pipe line (27) and connected to the inlet port (17A) of the first exhaust gas purifying device (16).
    Type: Grant
    Filed: May 26, 2014
    Date of Patent: October 3, 2017
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Hiroyuki Azuma, Jun Yamabayashi, Takahiro Kobayashi
  • Publication number: 20170120893
    Abstract: In a hybrid vehicle configured such that a sun gear, a carrier and a ring gear of a planetary gear are respectively connected with a rotating shaft of a motor MG1, a crankshaft of an engine and a driveshaft and that a motor MG2 is connected with the driveshaft, when a required braking force that is to be output to the driveshaft is equal to or less than a reference value Tref in an accelerator-off state, the braking force by engine braking is output to the driveshaft by motoring of the engine by the motor MG1. When the required braking force becomes greater than the reference value Tref, on the other hand, the power output from the engine by load operation of the engine in a reverse rotating direction is output as the braking force to the driveshaft.
    Type: Application
    Filed: October 26, 2016
    Publication date: May 4, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki AZUMA, Tatsuki SAITOH
  • Patent number: 9623746
    Abstract: A tank bracket (23) is formed by a bottom surface part (24) having a first frame body (24A), a second frame body (24B), a third frame body (24C), and a fourth frame body (24D), a first side surface part (25) supported by the first frame body (24A) of the bottom surface part (24) and provided in a vertical direction, and a second side surface part (26) supported by the second frame body (24B) and provided in the vertical direction, and a female screw hole (24E) is provided in the bottom surface part (24). A fixing band (28) for fixing a reduction agent tank (22) is provided on the tank bracket (23). On this, the tank bracket (23) is fixed to an undercover (14) of a revolving frame (5) by using each of the female screw holes (24E) of the bottom surface part (24) in a state in which the reduction agent tank (22) is sandwiched between the second side surface part (26) and a right side frame (11) of the revolving frame (5).
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: April 18, 2017
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Toshinori Fujii, Hidenori Mano, Hiroyuki Azuma
  • Patent number: 9458840
    Abstract: A relief pressure control system is provided with a controller for outputting, responsive to an adjustment signal output from a dial switch, a control signal to control a relief pressure of a variable solenoid relief valve, a display unit for displaying, responsive to display signals outputted from the controller, a relationship between a circuit pressure output from a pressure sensor and a pressure required by a hydraulic cylinder, and a control device constituting a start instruction unit for instructing a start of control of the variable solenoid relief valve. Stop valves are arranged in sections of main lines, which communicate a directional control valve and the hydraulic cylinder with each other, to open or close the section. The sections are located between positions on the main lines, where the variable solenoid relief valves are connected to the main lines, respectively, and the hydraulic cylinder.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: October 4, 2016
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Hiroyuki Azuma, Tsuyoshi Nakamura, Hidenobu Tsukada, Kensuke Sato, Yasuo Okano
  • Patent number: 9366007
    Abstract: A first accommodating case (13) which is located more forward than a fuel tank (12) and is small in height dimension (H1) of an upper surface (13E) is provided on the right side of a revolving frame (5). A second accommodating case (16) the position of an upper surface (16E) of which is higher than the upper surface (13E) of the first accommodating case (13) and is lower than an upper surface plate (12E) of the fuel tank (12) is provided on the rear side of the upper surface (13E) of this first accommodating case (13). Moreover, a reducing agent tank (20) is provided in a tank accommodating space (15) in the first accommodating case (13) and articles such as a tool box (23) and the like are accommodated in an article accommodating space (17) in the second accommodating case (16).
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: June 14, 2016
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Hiroyuki Azuma, Takahiro Kobayashi, Jun Yamabayashi, Satoshi Tehara
  • Publication number: 20160152131
    Abstract: A tank bracket (23) is formed by a bottom surface part (24) having a first frame body (24A), a second frame body (24B), a third frame body (24C), and a fourth frame body (24D), a first side surface part (25) supported by the first frame body (24A) of the bottom surface part (24) and provided in a vertical direction, and a second side surface part (26) supported by the second frame body (24B) and provided in the vertical direction, and a female screw hole (24E) is provided in the bottom surface part (24). A fixing band (28) for fixing a reduction agent tank (22) is provided on the tank bracket (23). On this, the tank bracket (23) is fixed to an undercover (14) of a revolving frame (5) by using each of the female screw holes (24E) of the bottom surface part (24) in a state in which the reduction agent tank (22) is sandwiched between the second side surface part (26) and a right side frame (11) of the revolving frame (5).
    Type: Application
    Filed: November 25, 2015
    Publication date: June 2, 2016
    Inventors: Toshinori FUJII, Hidenori MANO, Hiroyuki AZUMA
  • Patent number: 9341198
    Abstract: A hydraulic drive device for a hydraulic excavator, includes: a first hydraulic pump; a first boom directional control valve and a second arm directional control valve which are connected in parallel to the first pump; a second hydraulic pump; and a second boom directional control valve and a first arm directional control valve which are connected in parallel to the second pump; wherein: the hydraulic drive device also includes: a third hydraulic pump; a third boom directional control valve connected to the third pump and controlling the flow of pressure oil supplied to a boom cylinder; and a third arm directional control valve connected in tandem with the third boom directional control valve and controlling the flow of pressure oil supplied to an arm cylinder.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: May 17, 2016
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Tsuyoshi Nakamura, Kazunori Nakamura, Yasuo Okano, Kouji Ishikawa, Kensuke Sato, Hiroyuki Azuma, Mitsuhiko Kanehama, Yusuke Kajita
  • Patent number: D890200
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: July 14, 2020
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shunya Kokubo, Takaaki Ishii, Yuuichi Kurosawa, Tadahiro Yamaguchi, Hiroyuki Azuma, Keiichirou Nakamura, Hiroshi Sakamoto, Shigeki Tokita
  • Patent number: D892835
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: August 11, 2020
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shunya Kokubo, Takaaki Ishii, Yuuichi Kurosawa, Tadahiro Yamaguchi, Hiroyuki Azuma, Keiichirou Nakamura, Hiroshi Sakamoto, Shigeki Tokita