Patents by Inventor Hiroshi Yaguchi

Hiroshi Yaguchi 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).

  • Patent number: 11674893
    Abstract: A housing includes a first opening and a second opening, and encloses a light-emitting element and a first light receiving unit. The first opening is provided in a first light guide path, and is arranged so that light output from the light-emitting element travels toward a target surface. The second opening is provided in a second light guide path arranged between the target surface and the first light receiving unit. The first opening is an exit opening of a through-hole provided penetrating through the housing, and a shape of the through-hole is a shape in which diffracted light of the +1st order and higher orders and diffracted light of the ?1st order and higher orders produced at the target surface to be irradiated are not incident on the first light receiving unit.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: June 13, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazushi Ino, Takuya Mukaibara, Junya Azami, Kazutaka Yaguchi, Hiroshi Kita
  • Patent number: 11658550
    Abstract: A PCU case of a power control unit includes a case main body that has an upper surface-side opening and a lower surface-side opening and is formed in a tubular shape with a rectangular cross-section, and an upper cover that covers the upper surface-side opening. The case main body includes a fastening part that is formed so as to surround the lower surface-side opening and fastened to a surface of a transaxle case, and this surface of the transaxle case doubles as a lower surface of the PCU case. The case main body includes a plate-shaped beam member that extends along a short-side direction, connects a pair of long-side side walls to each other, and divides the inside of the case main body into an upper chamber and a lower chamber, and an intermediate opening that provides communication between the upper chamber and the lower chamber.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: May 23, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki Marukawa, Hiroshi Yaguchi
  • Patent number: 11440394
    Abstract: A vehicle drive system includes: a case accommodating a first rotary electric machine and a second rotary electric machine that are arranged to have respective rotational axes parallel to each other and to be radially adjacent to each other; and a power control device configured to control the first rotary electric machine and the second rotary electric machine. The case includes a peripheral wall portion surrounding the first rotary electric machine and the second rotary electric machine, and the power control device is mounted in a mounting section provided on an outer peripheral surface of the peripheral wall portion. A lower part of the power control device is located in a space surrounded by a line connecting a first cross point, and a second cross point, the first rotary electric machine and the second rotary electric machine.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: September 13, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Yaguchi, Naoyuki Kishimoto, Naoki Marukawa, Shuichi Iwata
  • Patent number: 11223305
    Abstract: A vehicle driving device includes a case that accommodates therein a first rotary electric machine and a second rotary electric machine arranged with rotation axes thereof parallel to each other and radially adjacent to each other, and a power control device that controls electric power supplied to the first rotary electric machine and the second rotary electric machine. In the power control device, a control board, a power card and a cooler, a reactor and a capacitor, and a water jacket are disposed in order from top in a height direction.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: January 11, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoyuki Kishimoto, Hiroshi Yaguchi, Shuichi Iwata, Naoki Marukawa, Hirotaka Koyanagi
  • Publication number: 20210257889
    Abstract: A PCU case of a power control unit includes a case main body that has an upper surface-side opening and a lower surface-side opening and is formed in a tubular shape with a rectangular cross-section, and an upper cover that covers the upper surface-side opening. The case main body includes a fastening part that is formed so as to surround the lower surface-side opening and fastened to a surface of a transaxle case, and this surface of the transaxle case doubles as a lower surface of the PCU case. The case main body includes a plate-shaped beam member that extends along a short-side direction, connects a pair of long-side side walls to each other, and divides the inside of the case main body into an upper chamber and a lower chamber, and an intermediate opening that provides communication between the upper chamber and the lower chamber.
    Type: Application
    Filed: December 7, 2020
    Publication date: August 19, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki MARUKAWA, Hiroshi YAGUCHI
  • Patent number: 10995319
    Abstract: The present invention provides a method of producing a sheet-like pancreatic islet, comprising culturing an isolated pancreatic islet in a culture vessel, wherein a polypeptide comprising an EC1 domain of E-cadherin and having a binding ability to said E-cadherin is fixed on or applied to a surface of a solid phase, while being adhered to the solid phase surface for a period sufficient for the pancreatic islet to take a sheet-like form.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: May 4, 2021
    Assignee: OTSUKA PHARMACEUTICAL FACTORY, INC.
    Inventors: Koji Azuma, Yasutaka Fujita, Hiroshi Yaguchi, Miwa Harada
  • Patent number: 10994600
    Abstract: A front compartment is provided with an engine, an air cleaner, a radiator, a reservoir tank, a motor unit, an auxiliary battery, and an EFI-ECU. The engine, the reservoir tank, the motor unit and the EFI-ECU are aligned in a vehicle's width direction. The air cleaner and the auxiliary battery are also aligned in the vehicle's width direction. The air cleaner is located in front of the motor unit. The motor unit includes a power control unit and a transaxle. The air cleaner is located in front of the power control unit. The auxiliary battery is located diagonally forward to left of the motor unit.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: May 4, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki Marukawa, Shuichi Iwata, Hiroshi Yaguchi, Naoyuki Kishimoto
  • Publication number: 20200256277
    Abstract: To reduce a friction, and to provide an excellent seizing resistance. Provided is a cast iron cylinder liner including an inner peripheral sliding surface made of cast iron, and an internal combustion engine including a cylinder bore including an inner peripheral sliding surface made of cast iron, wherein the inner peripheral sliding surface includes a region satisfying Expression (1) to Expression (3), Rvk/Rk?1.0 ??Expression (1) 0.08 ?m?Rk?0.3 ?m Expression (2) Rk?Rpk>0 Expression (3) [Rk is the core roughness depth based on JIS B0671-2:2002, Rpk is the reduced peak height based on JIS B0671-2:2002, and Rvk is the reduced valley depth based on JIS B0671-2:2002 in Expression (1) to Expression (3)].
    Type: Application
    Filed: July 5, 2019
    Publication date: August 13, 2020
    Applicants: TPR CO., LTD., TPR INDUSTRY CO., LTD.
    Inventors: Kiyoyuki KAWAI, Shinji AMAIKE, Tetsuya NANGO, Seiji TAMAKI, Seeroku HOSHINO, Wataru SUZUKI, Takashi OIZUMI, Hiroshi YAGUCHI, Takashi SUZUKI
  • Publication number: 20200156454
    Abstract: A vehicle drive system includes: a case accommodating a first rotary electric machine and a second rotary electric machine that are arranged to have respective rotational axes parallel to each other and to be radially adjacent to each other; and a power control device configured to control the first rotary electric machine and the second rotary electric machine. The case includes a peripheral wall portion surrounding the first rotary electric machine and the second rotary electric machine, and the power control device is mounted in a mounting section provided on an outer peripheral surface of the peripheral wall portion. A lower part of the power control device is located in a space surrounded by a line connecting a first cross point, and a second cross point, the first rotary electric machine and the second rotary electric machine.
    Type: Application
    Filed: November 13, 2019
    Publication date: May 21, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi YAGUCHI, Naoyuki Kishimoto, Naoki Marukawa, Shuichi Iwata
  • Publication number: 20200156456
    Abstract: A front compartment is provided with an engine, an air cleaner, a radiator, a reservoir tank, a motor unit, an auxiliary battery, and an EFI-ECU. The engine, the reservoir tank, the motor unit and the EFI-ECU are aligned in a vehicle's width direction. The air cleaner and the auxiliary battery are also aligned in the vehicle's width direction. The air cleaner is located in front of the motor unit. The motor unit includes a power control unit and a transaxle. The air cleaner is located in front of the power control unit. The auxiliary battery is located diagonally forward to left of the motor unit.
    Type: Application
    Filed: October 3, 2019
    Publication date: May 21, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki MARUKAWA, Shuichi IWATA, Hiroshi YAGUCHI, Naoyuki KISHIMOTO
  • Publication number: 20200161993
    Abstract: A vehicle driving device includes a case that accommodates therein a first rotary electric machine and a second rotary electric machine arranged with rotation axes thereof parallel to each other and radially adjacent to each other, and a power control device that controls electric power supplied to the first rotary electric machine and the second rotary electric machine. In the power control device, a control board, a power card and a cooler, a reactor and a capacitor, and a water jacket are disposed in order from top in a height direction.
    Type: Application
    Filed: November 13, 2019
    Publication date: May 21, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoyuki KISHIMOTO, Hiroshi Yaguchi, Shuichi Iwata, Naoki Marukawa, Hirotaka Koyanagi
  • Patent number: 10655515
    Abstract: This blow-by gas recirculation device for an internal combustion engine is provided with a vacuum pump which supplies negative pressure to a brake booster and usable for recirculation of blow-by gas to an intake passage. This device includes: a PCV device for recirculating blow-by gas in a crankcase to the intake passage; a ventilation shortage region determination unit which determines whether or not an operational region of the engine is a PCV ventilation flow rate shortage region; and a brake negative pressure determination unit which determines whether or not the negative pressure of the brake booster is secured. The vacuum pump ventilates blow-by gas in the crankcase only when the determination units determines that the operational region is the PCV ventilation flow rate shortage region and that the negative pressure is secured. This reduces a contact risk of blow-by gas with engine oil, and inhibits the degradation of the oil.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: May 19, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Yaguchi, Takeshi Fukui
  • Patent number: 10605366
    Abstract: A pressure ring includes a first pressure ring fitted in a first ring groove of a piston; and a second pressure ring fitted in a second ring groove of the piston, and positioned between the first pressure ring and an oil ring. The second pressure ring is provided with a groove that extends across a surface of the second pressure ring from an inner peripheral side to an outer peripheral side. The groove is configured such that at least one of a width and a depth of the groove becomes larger toward the outer peripheral side from the inner peripheral side.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: March 31, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hisashi Ohki, Takashi Koyama, Hiroshi Yaguchi, Yusuke Morita, Takashi Suzuki
  • Patent number: 10458310
    Abstract: An object of this invention is to suppress the occurrence of pre-ignition by appropriately controlling a wall surface temperature of a combustion chamber based on a target temperature region in which the frequency with which pre-ignition occurs is reflected, without causing pre-ignition to actually occur. An ECU 50 acquires a wall surface temperature of a combustion chamber 14 or an engine water temperature or the like that correlates therewith as a wall temperature parameter. The ECU 50 is equipped with data for a pre-ignition suppression temperature region that is a region in which the pre-ignition occurrence frequency is smallest among temperature regions of the wall temperature parameter. In a pre-ignition susceptibility operating region A, the wall temperature parameter is controlled so as to fall within the pre-ignition suppression temperature region by operating a cooling water amount varying mechanism 38.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: October 29, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke Morita, Motoichi Murakami, Hiroshi Yaguchi, Takeshi Kitayama
  • Patent number: 10352280
    Abstract: This blow-by gas recirculation device for an internal combustion engine of a vehicle is provided with a vacuum pump which supplies negative pressure to a brake booster. The blow-by gas recirculation device includes: a fresh-air introduction passage for introducing a fresh air into a crankcase from an intake passage upstream of a throttle valve; a PCV device for recirculating, to the intake passage downstream of the throttle valve, blow-by gas in the crankcase; and a suction/recirculation means which uses the vacuum pump to suck the blow-by gas from inside the crankcase, in a region where the blow-by gas ventilation quantity by the PCV device is insufficient, and recirculate the blow-by gas to the intake passage, while the fresh air is being introduced from the fresh-air introduction passage. As a result, the blow-by gas concentration in the crankcase is reduced, engine oil contact opportunities are reduced, and oil deterioration is inhibited.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: July 16, 2019
    Assignee: Toyota Jidosha kabushiki Kaisha
    Inventors: Hiroshi Yaguchi, Takeshi Fukui
  • Publication number: 20180299011
    Abstract: A pressure ring includes a first pressure ring fitted in a first ring groove of a piston; and a second pressure ring fitted in a second ring groove of the piston, and positioned between the first pressure ring and an oil ring. The second pressure ring is provided with a groove that extends across a surface of the second pressure ring from an inner peripheral side to an outer peripheral side. The groove is configured such that at least one of a width and a depth of the groove becomes larger toward the outer peripheral side from the inner peripheral side.
    Type: Application
    Filed: April 11, 2018
    Publication date: October 18, 2018
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hisashi Ohki, Takashi Koyama, Hiroshi Yaguchi, Yusuke Morita, Takashi Suzuki
  • Publication number: 20180187582
    Abstract: This blow-by gas recirculation device for an internal combustion engine is provided with a vacuum pump which supplies negative pressure to a brake booster and usable for recirculation of blow-by gas to an intake passage. This device includes: a PCV device for recirculating blow-by gas in a crankcase to the intake passage; a ventilation shortage region determination unit which determines whether or not an operational region of the engine is a PCV ventilation flow rate shortage region; and a brake negative pressure determination unit which determines whether or not the negative pressure of the brake booster is secured. The vacuum pump ventilates blow-by gas in the crankcase only when the determination units determines that the operational region is the PCV ventilation flow rate shortage region and that the negative pressure is secured. This reduces a contact risk of blow-by gas with engine oil, and inhibits the degradation of the oil.
    Type: Application
    Filed: June 30, 2016
    Publication date: July 5, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi YAGUCHI, Takeshi FUKUI
  • Publication number: 20180156168
    Abstract: This blow-by gas recirculation device for an internal combustion engine of a vehicle is provided with a vacuum pump which supplies negative pressure to a brake booster. The blow-by gas recirculation device includes: a fresh-air introduction passage for introducing a fresh air into crankcase from an intake passage upstream of a throttle valve; a PCV device for recirculating, to the intake passage downstream of the throttle valve, blow-by gas in the crankcase; and a suction/recirculation means which uses the vacuum pump to suck the blow-by gas from inside the crankcase, in a region where the blow-by gas ventilation quantity by the PCV device is insufficient, and recirculate the blow-by gas to the intake passage, while the fresh air is being introduced from the fresh-air introduction passage. As a result, the blow-by gas concentration in the crankcase is reduced, engine oil contact opportunities are reduced, and oil deterioration is inhibited.
    Type: Application
    Filed: June 29, 2016
    Publication date: June 7, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi YAGUCHI, Takeshi FUKUI
  • Publication number: 20170314502
    Abstract: An internal combustion engine has a cylinder block and a cylinder head fixed to each other with a plurality of bolts, and a piston fitted in a cylinder bore of the cylinder block so as to be able to reciprocate. A portion of the cylinder bore having a minimum diameter in a travel range of a skirt across which the skirt travels as the piston reciprocates is located within a range facing the skirt when the piston is at a bottom dead center. A clearance between the skirt and the minimum-diameter portion has a minimum value of a clearance between the skirt and a wall surface of the cylinder bore.
    Type: Application
    Filed: April 26, 2017
    Publication date: November 2, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi SUZUKI, Hiroshi YAGUCHI, Hisashi OHKI
  • Patent number: 9511511
    Abstract: Provided is a resin-coated saw wire that, when used to cut a workpiece, has a shallow depth of a damaged layer and can give a cut article having a smooth surface. The resin-coated saw wire is used in cutting of the workpiece using a sawing machine and includes a steel wire and a resin coating covering the steel wire surface. The resin coating contains substantially no abrasive grain, has a hardness at 120° C. of 0.07 GPa or more, and has a hardness controlled so as to prevent abrasive grains from coming into the resin coating, which abrasive grains are sprayed during workpiece cutting.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: December 6, 2016
    Assignee: KOBELCO RESEARCH INSTITUTE, INC.
    Inventors: Kazuo Yoshikawa, Hiroshi Yaguchi, Kazuhisa Fujisawa, Masanori Anan, Akinori Uratsuka, Yoshitake Matsushima