Patents by Inventor Akira Yamashita

Akira Yamashita 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).

  • Fuel cell system and a method for controlling a fuel cell system
    Patent number: 10141589
    Abstract: A fuel cell system comprises a fuel cell, a tank, a 1st pressure sensor that measures a fill-time pressure, a 2nd pressure sensor that measures a supply piping pressure, a temperature sensor that measures an internal temperature of the tank; and a controller that, when the fuel cell starts, derives an estimated pressure value of the supply piping pressure based on a 1st pressure value that shows the fill-time pressure, the internal temperature when the 1st pressure value was measured, and the internal temperature when the supply piping pressure was measured, and that detects as the supply piping pressure the lower value among the estimated pressure value and the 2nd pressure value that shows the measured supply piping pressure.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: November 27, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Komiya, Masaaki Kondo, Akira Yamashita
  • COOLING DEVICE FOR INTERNAL COMBUSTION ENGINE
    Publication number: 20180313252
    Abstract: A cooling device for an internal combustion engine includes a pump portion, a circulation water passage, a thermostat configured to switch between a state where the coolant is circulated to a heat exchange water passage on which a radiator is disposed and a state where the coolant is not circulated to the heat exchange water passage, and a control unit configured to control the pump portion. The control unit is configured to control a three-way valve such that a first pump and a second pump are connected in parallel when the thermostat switches to the state where the coolant is circulated to the heat exchange water passage and controls the three-way valve such that the first pump and the second pump are connected in series when the thermostat switches to the state where the coolant is not circulated to the heat exchange water passage.
    Type: Application
    Filed: April 20, 2018
    Publication date: November 1, 2018
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukitoshi Aoyama, Akira Yamashita, Hiromichi Hashimoto, Koki Uno
  • MALE COUPLING MEMBER
    Publication number: 20180283594
    Abstract: The present disclosure provides a male coupling member detachably couplable to a female coupling member that includes an outer coupling body having a first end inserted and fitted into the female coupling member, a second end opposite to the first end, and a passage extending from the first end to the second end. The male coupling member further includes an inner coupling body disposed coaxially with the outer coupling body at a position closer to the first end, and a filtration member detachably attached to the inner coupling body. The inner coupling body is attachable to and detachable from the outer coupling body from the first end. The filtration member is held in the passage when the inner coupling body is attached to the outer coupling body. The filtration member is detachable when the inner coupling body is detached from the outer coupling body.
    Type: Application
    Filed: June 6, 2018
    Publication date: October 4, 2018
    Applicants: NITTO KOHKI CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya NISHIO, Hidetoshi NOHARA, Hirofumi ONISHI, Masaaki KONDO, Akira YAMASHITA
  • Check valve and receptacle structure
    Patent number: 10030783
    Abstract: In order to reduce a pressure loss in a check valve and simplify a manufacturing process, a check valve (10) configured to be disposed in piping of fluid is provided, which includes a valve housing (31) including a valve element (52) and a valve seat (54) therein, a casing (20) that is configured to place the valve housing therein, in which a casing flow path (60) is provided between the casing and the valve housing to make a flow of the fluid in an axial direction of the valve housing. In the valve housing, a communicating hole (38) and sealing portion (34) are formed. The communicating hole that is formed through the valve housing in a thickness direction thereof introduces the fluid, which flows through between the valve element and the valve seat at the open position of the check valve, into the casing flow path.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: July 24, 2018
    Assignees: Toyota Jidosha Kabushiki Kaisha, Nitto Kohki Co., Ltd.
    Inventors: Hirofumi Onishi, Masaaki Kondo, Akira Yamashita, Takuya Nishio
  • Valve device
    Patent number: 10006559
    Abstract: A valve device includes: a body including a gas passage through which gas flows and an accommodation recess that communicates with the gas passage; a valve mechanism that controls flow of the gas flowing through the gas passage; and a cover fixed to the body such that the cover covers the accommodation recess. In the valve device, the cover includes a cover recess that opens toward the accommodation recess, and the valve mechanism is assembled to the body such that the valve mechanism is accommodated in the accommodation recess with a portion of the valve mechanism protruding from the accommodation recess and the portion of the valve mechanism is accommodated in the cover recess.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: June 26, 2018
    Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshikatsu Kubo, Akira Nakano, Shusuke Inagi, Akira Yamashita
  • Valve device
    Patent number: 9995406
    Abstract: A valve device includes a body in which a gas flow passage is provided; and a check valve provided in the gas flow passage, the check valve including a poppet and a valve seat. The poppet excluding a block portion is in a form of a hollow shaft, the block portion being located at a distal end of the poppet and having a taper shape, and the poppet has at least one side hole that provides communication between an inside and an outside of a portion of the poppet, the portion being in the form of the hollow shaft. The at least one side hole extends obliquely with respect to a central axis line of the poppet such that the at least one side hole extends along a gas flow direction inclined with respect to a direction in which the poppet moves when the check valve opens.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: June 12, 2018
    Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Munetoshi Kuroyanagi, Akio Nakamura, Kazuo Haneda, Shusuke Inagi, Akira Yamashita, Masaaki Kondo
  • Control device for internal combustion engine
    Patent number: 9989000
    Abstract: To provide a control device capable of setting a plurality of combustion parameters changing a combustion state of an internal combustion engine to appropriate values and improving a fuel consumption rate regardless of an operation state. An engine ECU 70 sets a combustion parameter (main injection timing, pilot injection timing, fuel injection pressure, turbocharging pressure, or the like) such that a center-of-gravity position of a heat generation rate becomes a constant target crank angle regardless of a load of an engine 10, In addition, the ECU 70 estimates the center-of-gravity position of a heat generation rate based on an output of an in-cylinder pressure sensor 64 and feedback-controls the combustion parameter such that the estimated center-of-gravity position of a heat generation rate becomes equal to the target crank angle.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: June 5, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Akira Yamashita, Kazuyasu Iwata
  • Pressure Reducing Valve Device
    Publication number: 20180136672
    Abstract: A pressure reducing valve device includes a first body; a second body; a valve mechanism accommodated in the first body, and including a valve seat and a valve element; and a piston that is accommodated in the second body, defines a pressure reducing chamber, and is configured to move in accordance with a pressure in the pressure reducing chamber so as to move the valve element. The first body is connected to an inner portion of a connection portion having a bottomed cylindrical shape. The connection portion is provided in the second bods to protrude outward. The valve seat is held between the first body and the second body in a direction in which the first body and the second body are attached to each other such that the valve seat is fixed in a flow passage.
    Type: Application
    Filed: November 2, 2017
    Publication date: May 17, 2018
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akira NAKANO, Toshikatsu KUBO, Shota YAMAMATO, Akira YAMASHITA, Yutaka HOTTA, Eiji OKAWACHI
  • STEERING WHEEL
    Publication number: 20180134243
    Abstract: A steering wheel includes a metal core earthed to a body of a vehicle, an airbag device, an insulator, and a connector. The airbag device includes a bag holder supported by the metal core, wherein the bag holder forms part of a positive electric path connected to a horn device, an airbag coupled to the bag holder by a fastener, and an inflator including a circumferential portion that forms a flange, wherein the flange of the inflator is coupled by the fastener to the bag holder. The insulator insulates the bag holder from at least the flange and the fastener among elements of the airbag device. The connector electrically connects at least the flange, among the flange and the fastener, to the metal core.
    Type: Application
    Filed: October 30, 2017
    Publication date: May 17, 2018
    Inventors: Tsutomu ISHII, Toshihito YANAGISAWA, Yoshiteru BANNO, Yoshitomo KATO, Akira YAMASHITA
  • Propylene based resin composition and use thereof
    Patent number: 9969853
    Abstract: Means for solving the problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: May 15, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hiroshi Hoya, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita
  • Propylene based resin composition and use thereof
    Patent number: 9963567
    Abstract: Means for solving the problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: May 8, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hiroshi Hoya, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita
  • Valve Device
    Publication number: 20180119831
    Abstract: A valve device for a gas tank, includes a body and a check valve provided in an injection passage to inject gas into the gas tank. The check valve includes a valve seat, a case fixed in the injection passage while a space is provided between an inner peripheral surface of the injection passage and the case to enable gas to flow through the space, and a valve element accommodated in the case. The case includes a cylindrical portion, and is configured such that the bottom of the cylindrical portion, provided at an opposite side to the valve seat, defines a range where the valve element is axially movable. The valve element includes a head portion that can block a valve hole of the valve seat, and a sliding portion formed to be axially movable with respect to the cylindrical portion.
    Type: Application
    Filed: October 24, 2017
    Publication date: May 3, 2018
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya SUZUKI, Kazuki OKAMURA, Yuya KIHARA, Akio NAKAMURA, Shusuke INAGI, Akira YAMASHITA, Koji KIDA
  • Internal combustion engine
    Patent number: 9957916
    Abstract: The present invention relates to an internal combustion engine. An object of the invention is to allow an effect produced by an anodic oxide film to be exerted while suppressing a decrease in the combustion rate. A piston 10 includes a cavity portion 20 and a tapered portion 26 that is formed so as to surround the cavity portion 20 on an outer side thereof. The diameter of the tapered portion 26 decreases progressively in the downward direction from the top face side of the piston. A squish portion 28 is formed on an outer side of the tapered portion 26. An anodic oxide film 30 is formed on a surface (tapered face) of the tapered portion 26 and a surface (squish face) of the squish portion 28. The anodic oxide film 30 is not formed on the surface (cavity face) of the cavity portion 20.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: May 1, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Manabu Tateno, Akio Kawaguchi, Hideyuki Nishida, Hideo Yamashita, Hiroki Iguma, Akira Yamashita, Kazuyasu Iwata
  • Safety valve
    Patent number: 9945489
    Abstract: A safety valve mounted on a container and configured to release gas in a container in the case where the temperature rises, in which the safety is secured and a cost reduction is achieved. A movable body 12 includes a shaft portion 21 on which a compression coil spring 13 is fitted and a flange portion 22 configured to come into contact with a fusible alloy 11 by being urged by the compression coil spring 13. The flange portion 22 of the movable body 12 is provided with through holes 35 configured to discharge the fused fusible alloy 11 into a compression coil spring arrangement space 30.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: April 17, 2018
    Assignees: FUJIKIN INCORPORATED, Toyota Jidosha Kabushiki Kaisha
    Inventors: Kunihiko Daido, Masashi Matsuoka, Akira Yamashita, Shusuke Inagi
  • Pressure Reduction Valve Device
    Publication number: 20180087682
    Abstract: In a pressure reduction valve device, a valve body and a distal end portion of a support member are accommodated in a valve accommodation hole of a body. The distal end portion is inserted through an urging member accommodation hole. An inner introduction passage is formed between an outer peripheral surface of the distal end portion and an inner peripheral surface of the urging member accommodation hole. An outer introduction passage is formed between an outer surface of the valve body and an inner surface of the valve accommodation hole. The support member is provided with communication holes that establish communication between a gas inlet provided through the body and the valve accommodation hole in an axial direction. The inner introduction passage and the outer introduction passage are opposed, in an axial direction thereof, to the communication passage.
    Type: Application
    Filed: September 26, 2017
    Publication date: March 29, 2018
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshikatsu KUBO, Masayuki SEKINE, Akira NAKANO, Shota YAMAMOTO, Yutaka HOTTA, Akira YAMASHITA
  • Valve device
    Patent number: 9929417
    Abstract: A valve device includes a body, a solenoid valve accommodated in an accommodation hole of the body, and a joint member fixed to the body. The solenoid valve includes: a sleeve having a tubular shape and fitted in the accommodation hole, and including an introduction passage and a delivery passage; and a valve element configured to open and close the passages. A U-seal is disposed between an outer wall surface of the sleeve and an inner wall surface of the accommodation hole. The body has an attachment hole that is located downstream of the delivery passage of the sleeve and opens on an outer surface of the body. The joint member including a backflow reduction valve is fixed to the attachment hole.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: March 27, 2018
    Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akio Nakamura, Takuya Suzuki, Shusuke Inagi, Akira Yamashita, Masaaki Kondo
  • Throttle valve
    Patent number: 9927817
    Abstract: A throttle valve includes a throttle valve element; a support member that supports the throttle valve element, the support member including a valve element support portion, and a shaft portion that is connected to the valve element support portion, the shaft portion having a gas passage and an inlet port; a mounting member that mounts the support member in a throttle valve flow passage; a filter that is disposed on an outer peripheral surface of the shaft portion to cover the inlet port, in a space whose axial length is defined by the shaft portion and the mounting member; and gaskets that are respectively disposed between one axial end of the filter and the mounting member and between the other axial end of the filter and the shaft portion.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: March 27, 2018
    Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akio Nakamura, Akira Nakano, Shusuke Inagi, Akira Yamashita, Masaaki Kondo
  • Propylene based resin composition and use thereof
    Patent number: 9908983
    Abstract: Means for solving the problems The thermoplastic resin composition (X1) of the present invention comprises (A1), (B1), (C1), and optionally (D1) below: 1 to 90 wt % of an isotactic polypropylene (A1); 9 to 98 wt % of a propylene/ethylene/?-olefin copolymer (B1) containing 45 to 89 mol % of propylene-derived structural units, 10 to 25 mol % of ethylene-derived structural units, and optionally, 0 to 30 mol % of C4-C20 ?-olefin-derived structural units (a1); 1 to 80 wt % of a styrene-based elastomer (C1); and 0 to 70 wt % of an ethylene/?-olefin copolymer (D1) whose density is in the range of 0.850 to 0.910 g/cm3, wherein (A1)+(B1)+(C1)+(D1)=100 wt %.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: March 6, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hiroshi Hoya, Kiminori Noda, Norihide Inoue, Hiroshi Uehara, Eiji Shiba, Masayoshi Yamaguchi, Manabu Kawamoto, Akira Yamashita
  • Pressure reduction valve and gas supply device
    Patent number: 9897219
    Abstract: The pressure reduction valve includes: a cylindrical portion, a piston and a spring. The cylindrical portion includes an inlet communicating with the primary side flow path and an outlet communicating with the secondary side flow path. The piston fitted into the cylindrical portion is slidable along an axis direction of the cylindrical portion within the cylindrical portion, and defines, within the cylindrical portion, a space communicating with the inlet and the outlet. The spring applies, to the piston, a force acting toward the space. The outlet is displaced in one direction from the center of the piston when seen in the axis direction. The force applied to the piston by the spring is distributed so as to deviate from the center of the piston to the side of the outlet.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: February 20, 2018
    Assignees: Toyota Jidosha Kabushiki Kaisha, JTEKT Corporation
    Inventors: Norihiko Saito, Sogo Goto, Masaaki Kondo, Akira Yamashita, Eiji Okawachi, Munetoshi Kuroyanagi, Toshikatsu Kubo, Takashi Iwaguchi
  • Cap
    Patent number: 9884551
    Abstract: A cap includes a main body attached to an end part of a charging port for fuel gas. The main body includes an elastic deformable portion for locking the main body to the end part when the main body is attached to the end part. The cap further includes a cover covering at least part of the elastic deformable portion and surrounding the main body. The elastic deformable portion at least partially elastically deforms when the main body is attached to the end part and when the main body is detached from the end part. The cover is a separate member from the main body. When the elastic deformable portion elastically deforms, the cover applies force to the elastic deformable portion in a direction opposite from the deforming direction.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: February 6, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hirofumi Onishi, Masaaki Kondo, Akira Yamashita, Yuji Furuta, Yukio Yoshida