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).
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Publication number: 20240094234Abstract: 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: ApplicationFiled: November 10, 2021Publication date: March 21, 2024Inventors: Hiroyuki KOBAYASHI, Satoru KANEKO, Takahiro SUZUKI, Yasuaki AOYAMA, Ryosuke HOSHI, Hiroshi WATANABE, Shinji AZUMA
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Patent number: 11933022Abstract: 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: GrantFiled: February 25, 2022Date of Patent: March 19, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki Sugo, Masaki Numakura, Makoto Hirai, Taiga Higuchi, Tomohiro Sato, Hiroyuki Azuma
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Patent number: 11881062Abstract: 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: GrantFiled: March 29, 2022Date of Patent: January 23, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki Sugo, Makoto Hirai, Masaki Numakura, Tomohiro Sato, Taiga Higuchi, Hiroyuki Azuma
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Patent number: 11519375Abstract: 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: GrantFiled: April 28, 2021Date of Patent: December 6, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tatsuki Saito, Hiroyuki Azuma
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Publication number: 20220319248Abstract: 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: ApplicationFiled: March 29, 2022Publication date: October 6, 2022Inventors: Yuki SUGO, Makoto HIRAI, Masaki NUMAKURA, Tomohiro SATO, Taiga HIGUCHI, Hiroyuki AZUMA
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Publication number: 20220282452Abstract: 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: ApplicationFiled: February 25, 2022Publication date: September 8, 2022Inventors: Yuki SUGO, Masaki NUMAKURA, Makoto HIRAI, Taiga HIGUCHI, Tomohiro SATO, Hiroyuki AZUMA
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Patent number: 11331605Abstract: 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: GrantFiled: March 31, 2017Date of Patent: May 17, 2022Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Hiroyuki Azuma, Nobuei Ariga, Tsuyoshi Noi
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Publication number: 20210394741Abstract: 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: ApplicationFiled: April 28, 2021Publication date: December 23, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tatsuki SAITO, Hiroyuki AZUMA
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Publication number: 20210220764Abstract: 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: ApplicationFiled: March 31, 2017Publication date: July 22, 2021Inventors: Hiroyuki AZUMA, Nobuei ARIGA, Tsuyoshi NOI
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Publication number: 20200232118Abstract: 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: ApplicationFiled: June 27, 2017Publication date: July 23, 2020Applicant: YAMAJU CERAMICS CO., LTD.Inventors: Ietaka SAHASHI, Takejji SASAMATA, Hideki OHASHI, Masato KURACHI, Toru YAGI, Hiroyuki AZUMA, Naofumi KAJITANI
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Patent number: 10179581Abstract: 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: GrantFiled: October 26, 2016Date of Patent: January 15, 2019Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroyuki Azuma, Tatsuki Saitoh
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Patent number: 9777611Abstract: 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: GrantFiled: May 26, 2014Date of Patent: October 3, 2017Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Hiroyuki Azuma, Jun Yamabayashi, Takahiro Kobayashi
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Publication number: 20170120893Abstract: 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: ApplicationFiled: October 26, 2016Publication date: May 4, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroyuki AZUMA, Tatsuki SAITOH
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Patent number: 9623746Abstract: 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: GrantFiled: November 25, 2015Date of Patent: April 18, 2017Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Toshinori Fujii, Hidenori Mano, Hiroyuki Azuma
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Patent number: 9458840Abstract: 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: GrantFiled: December 7, 2011Date of Patent: October 4, 2016Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Hiroyuki Azuma, Tsuyoshi Nakamura, Hidenobu Tsukada, Kensuke Sato, Yasuo Okano
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Patent number: 9366007Abstract: 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: GrantFiled: March 11, 2013Date of Patent: June 14, 2016Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.Inventors: Hiroyuki Azuma, Takahiro Kobayashi, Jun Yamabayashi, Satoshi Tehara
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Publication number: 20160152131Abstract: 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: ApplicationFiled: November 25, 2015Publication date: June 2, 2016Inventors: Toshinori FUJII, Hidenori MANO, Hiroyuki AZUMA
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Patent number: 9341198Abstract: 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: GrantFiled: May 17, 2012Date of Patent: May 17, 2016Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Tsuyoshi Nakamura, Kazunori Nakamura, Yasuo Okano, Kouji Ishikawa, Kensuke Sato, Hiroyuki Azuma, Mitsuhiko Kanehama, Yusuke Kajita
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Patent number: D890200Type: GrantFiled: October 3, 2018Date of Patent: July 14, 2020Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Shunya Kokubo, Takaaki Ishii, Yuuichi Kurosawa, Tadahiro Yamaguchi, Hiroyuki Azuma, Keiichirou Nakamura, Hiroshi Sakamoto, Shigeki Tokita
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Patent number: D892835Type: GrantFiled: October 3, 2018Date of Patent: August 11, 2020Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Shunya Kokubo, Takaaki Ishii, Yuuichi Kurosawa, Tadahiro Yamaguchi, Hiroyuki Azuma, Keiichirou Nakamura, Hiroshi Sakamoto, Shigeki Tokita