Patents by Inventor Takashi Koyama

Takashi Koyama 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: 10414390
    Abstract: A control apparatus is applied to an internal combustion engine. The engine comprises a water pump, and an oil pump. The apparatus makes a second motor to drive the water pump drive the oil pump, if the first motor to drive the oil pump malfunctions. Consequently, if the first motor malfunctions, the oil pump can be driven by the second motor. Thus, the possibility of seizing of the sliding portions of the engine can be reduced. Further, if the first motor malfunctions, the friction in the engine can be reduced, since the oil pump is not driven by the crank shaft.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: September 17, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke Morita, Takashi Koyama
  • Patent number: 10415467
    Abstract: Provided is an integrated coal gasification combined cycle equipped with: a gasifier that generates combustible gas from pulverized coal; a gas cooler; gas turbine equipment; an auxiliary fuel supply unit that supplies an auxiliary fuel to the gas turbine equipment; a heat recovery steam generator; steam turbine equipment; generators; and a circulation line unit that circulates cooling water. The heat recovery steam generator has a first medium-pressure coal economizer and a second medium-pressure coal economizer. When the combustible gas generated from the pulverized coal is burned, a serial heat exchange line is formed wherein cooling water passes through the first medium-pressure coal economizer, the second medium-pressure coal economizer, and the gas cooler. When the auxiliary fuel is burned, separate heat exchange lines are formed, wherein the cooling water separately passes through the first medium-pressure coal economizer and the second medium-pressure coal economizer.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: September 17, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Naoshige Yoshida, Koichi Sakamoto, Kenichiro Kosaka, Tetsuya Kizu, Yoshinori Koyama, Takashi Fujii, Osamu Shinada
  • Publication number: 20190279845
    Abstract: An antenna device according to an exemplary embodiment radiates electromagnetic waves. In the antenna device, a dielectric window is in contact with a lower wall of a first waveguide, the first waveguide is provided between the dielectric window and a second waveguide and extends in a direction crossing a tube axis of the second waveguide, a dispersion part in the first waveguide disperses the electromagnetic wave in the first waveguide, a coaxial conversion part causes propagation of the electromagnetic waves dispersed by the dispersion part to direct to a side of the dielectric window, and a front surface of the dielectric window does not have irregularities.
    Type: Application
    Filed: March 11, 2019
    Publication date: September 12, 2019
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Naoki MATSUMOTO, Yuki KAWADA, Ayako ITO, Koji KOYAMA, Takahiro SENDA, Takashi SUZUKI, Yoshikazu AZUMAYA
  • Patent number: 10381793
    Abstract: A ground connection structure is a structure for collectively connecting, to a body of a vehicle, a plurality of grounding wires which are connected to respective electrical components installed in the vehicle. The ground connection structure includes: a connection box to which the plurality of grounding wires are connected; a grounding terminal part connected to the vehicle in an electrically conducting state; and an electrically conducting connection part having one end connected to the connection box and the other end connected to the grounding terminal part, the electrically conducting connection part connecting the connection box and the grounding terminal part in an electrically conducting manner. The electrically conducting connection part is made of a low-inductance material having low inductance.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: August 13, 2019
    Assignee: YAZAKI CORPORATION
    Inventors: Yukinari Naganishi, Akira Baba, Takashi Odajima, Hirohito Habara, Hideaki Saitoh, Takao Ota, Akihiro Koyama, Atsushi Nakata
  • Publication number: 20190243085
    Abstract: A lens device includes a first lens system including a first lens, a second lens system including a second lens, a moving member configured to move in an optical axis direction of the first lens, and a physical structure configured to move the first lens in the optical axis direction and move the moving member in a direction opposite to a movement direction of a center of gravity of a physical system that includes the first lens.
    Type: Application
    Filed: April 17, 2019
    Publication date: August 8, 2019
    Inventor: Takashi KOYAMA
  • Patent number: 10365012
    Abstract: Provided is a faucet device for an aircraft lavatory unit, wherein a second joint and a third joint are joined by inserting the third joint of a heater module into a second joint of a valve module, and screw members are used to fasten a first case and a second case. As a result, the valve module and the heater module are joined in series via the second joint and the third joint. A first connector of a controller module is joined to a third connector of the valve module and a second connector of the controller module is joined to a fourth connector of the heater module. The first joint of the valve module is joined to a water supply pipe. A fourth joint of the heater module and a faucet main body are joined via a pipe.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: July 30, 2019
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Takashi Koyama
  • Publication number: 20190227020
    Abstract: Provided is an electrostatic capacitance detection device including: an electrode pair including a pair of electrodes, the electrode pair being arranged inside a compressor configured to compress refrigerant; a capacitor being connected in series to the electrode pair; an inverter having one of power lines connected to one end of series-connected electrode pair and capacitor, and is configured to drive the compressor, the power lines being used for driving the compressor; and a voltage detecting unit configured to measure a voltage between the pair of electrodes of the electrode pair.
    Type: Application
    Filed: June 8, 2017
    Publication date: July 25, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Taichiro TAMIDA, Takahiro INOUE, Takashi HASHIMOTO, AKIHIKO IWATA, Shuhei KOYAMA, Takahiko KOBAYASHI
  • Patent number: 10358706
    Abstract: Provided is a carbonitrided bearing part which has high hardenability and toughness, and is excellent in wear resistance and surface-originated flaking life. A carbonitrided bearing part of the present embodiment has a chemical composition containing, in mass %, C: 0.15 to 0.45%, Si: not more than 0.50%, Mn: 0.40 to 1.50%, P: not more than 0.015%, S: not more than 0.005%, Cr: 0.30 to 2.0%, Mo: 0.10 to 0.35%, V: 0.20 to 0.40%, Al: 0.005 to 0.10%, N: not more than 0.030%, and O: not more than 0.0015%, with the balance being Fe and impurities, and satisfying Formulae (1) and (2). At surface, C concentration is 0.7 to 1.2%, N concentration is 0.15 to 0.6%, and Rockwell hardness HRC is 58 to 65. 1.20<0.4Cr+0.4Mo+4.5V<2.60??(1) 2.7C+0.4Si+Mn+0.8Cr+Mo+V>2.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: July 23, 2019
    Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, JTEKT CORPORATION
    Inventors: Yutaka Neishi, Takahisa Suzuki, Tatsuya Koyama, Shingo Yamasaki, Kohei Kanetani, Takashi Sada
  • Publication number: 20190186533
    Abstract: A slide surface of a thrust bearing includes a planar portion, a taper portion, and a pocket portion. The pocket portion includes a bottom surface, a first side surface, and a second side surface. The first side surface is formed on the side of the taper portion. The second side surface is formed on a side opposed to the first side surface. A depth from the plane of the planar portion to the thinnest portion of the taper portion is between 10 ?m and 80 ?m. A first angle that is an angle between a virtual surface obtained by extending the bottom surface and the second side surface is between 90° and 120°. And a second angle that is an angle between a virtual surface obtained by extending the first side surface and the tapered surface is between 60° and 120°.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 20, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., LTD.
    Inventors: Yuta UEMATSU, Takashi KOYAMA, Tsutomu KUBOTA, Tadashi NAMBA
  • Patent number: 10307845
    Abstract: A threading tool includes: a tool main body; and a cutting edge portion, which is provided on a tip portion of the tool main body and has a rake face and a flank face. The cutting edge portion includes: a primary cutting edge extending in a tooth width direction of the cutting edge portion; two corner edges, one and other of which are provided on one and other of both ends of the primary cutting edge, respectively, and are in a convex curve shape; and two secondary cutting edges, one and other of which extend from the one and the other of the two corner edges to a rear end side of the cutting edge portion, respectively. Two secondary cutting edges are shorter than the primary cutting edge. At least one of the two secondary edges is slanted to a direction intersecting the primary cutting edge in an obtuse angle.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: June 4, 2019
    Assignees: SHIMODA IRON WORKS CO., LTD., MITSUBISHI MATERIALS CORPORATION
    Inventors: Kazumi Akashi, Takashi Koyama
  • Publication number: 20190163037
    Abstract: A movable object includes a photographing device, a support member supporting the photographing device, and a propulsion system configured to propel the movable object. The photographing device includes an image sensor, a housing accommodating the image sensor, a heat conductor configured to transmit heat generated by the image sensor to the housing, and a heat radiator provided on an outer surface of the housing.
    Type: Application
    Filed: January 30, 2019
    Publication date: May 30, 2019
    Inventor: Takashi KOYAMA
  • Patent number: 10294987
    Abstract: A bearing device includes a thrust bearing. The thrust bearing has a bearing surface in a half-split ring shape, and a plurality of oil grooves formed to cross the bearing surface from an inner circumferential side to an outer circumferential side. Further, the thrust bearing includes a first thrust bearing that is disposed on a side surface facing a side of a transmission, and a second thrust bearing that is disposed on a side surface facing an opposite side to the transmission. In the first thrust bearing, a bearing surface between the plurality of oil grooves is configured by including a taper surface formed so that a wall thickness becomes thicker toward a rotation direction of the crankshaft. Further, in the second thrust bearing, a bearing surface between the plurality of oil grooves is configured by a plane in which a wall thickness is constant.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: May 21, 2019
    Assignees: Toyota Jidosha Kabushiki Kaisha, Taiho Kogyo Co., Ltd.
    Inventors: Takashi Koyama, Yuta Uematsu, Tsutomu Kubota
  • Publication number: 20190115605
    Abstract: A fuel cell system includes a water supply unit configured to supply water from a first water storage unit to a second water storage unit, and a water usage unit uses water in the second water storage unit. The first and second water storage units store produced water form the fuel cell. When the amount of water stored in the first water storage unit exceeds a first predetermined value and the amount of water stored in the second water storage unit is smaller than a second predetermined value, water is supplied from the first water storage unit to the second water storage unit. When water is being used by the water usage unit, water is supplied from the first water storage unit to the second water storage unit even when the amount of water stored in the second water storage unit is not smaller than the second predetermined value.
    Type: Application
    Filed: October 10, 2018
    Publication date: April 18, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuichi SAKAJO, Takashi KOYAMA, Ryo YOSHIOKA, Takahiro YAMAFUJI
  • Publication number: 20190113922
    Abstract: The present disclosure provides systems, methods, and devices related to the control and operation of a carrier for supporting a payload. In one aspect, a carrier may comprise: a stator configured to be coupled to a base support, the stator comprising a spherical surface; and a frame operably coupled to the stator via a plurality of piezoelectric actuators, wherein the frame is configured to rotate relative to the stator about one or more rotational axes, and wherein the frame is configured to support a plurality of payloads in a manner that substantially balances a weight of the plurality of payloads relative to the stator.
    Type: Application
    Filed: November 16, 2018
    Publication date: April 18, 2019
    Inventors: Takashi KOYAMA, Zongyao QU
  • Publication number: 20190103615
    Abstract: A fuel cell system includes a fuel cell, a water storage unit configured to store water recovered from the fuel cell and be able to drain the stored water, a water usage unit configured to use the water in the water storage unit, and a control unit configured to control a drain of the water from the water storage unit. The control unit is configured to, when a first predetermined time has elapsed since a last drain of the water from the water storage unit, drain the water from the water storage unit. The control unit is configured to, when it is predicted that the water in the water storage unit is used by the water usage unit within a second predetermined time shorter than the first predetermined time, not drain the water from the water storage unit even when the first predetermined time has elapsed since the drain of the water from the water storage unit.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 4, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuichi SAKAJO, Takashi KOYAMA, Ryo YOSHIOKA, Takahiro YAMAFUJI
  • Publication number: 20190011659
    Abstract: A lens barrel includes one or more movable lens groups, and a cam barrel associated with the one or more movable lens groups and configured to balance a center of gravity of the one or more movable lens groups.
    Type: Application
    Filed: August 27, 2018
    Publication date: January 10, 2019
    Inventor: Takashi KOYAMA
  • 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: 20180274586
    Abstract: A bearing device includes a thrust bearing. The thrust bearing has a bearing surface in a half-split ring shape, and a plurality of oil grooves formed to cross the bearing surface from an inner circumferential side to an outer circumferential side. Further, the thrust bearing includes a first thrust bearing that is disposed on a side surface facing a side of a transmission, and a second thrust bearing that is disposed on a side surface facing an opposite side to the transmission. In the first thrust bearing, a bearing surface between the plurality of oil grooves is configured by including a taper surface formed so that a wall thickness becomes thicker toward a rotation direction of the crankshaft. Further, in the second thrust bearing, a bearing surface between the plurality of oil grooves is configured by a plane in which a wall thickness is constant.
    Type: Application
    Filed: February 1, 2018
    Publication date: September 27, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., Ltd.
    Inventors: Takashi KOYAMA, Yuta UEMATSU, Tsutomu KUBOTA
  • Patent number: D831800
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: October 23, 2018
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Takashi Koyama, Mitsuaki Takeda, Johannes Lampela, Ross Carmichael, Philipp Haban, Tim Chuang, Hector Santos
  • Patent number: D831801
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: October 23, 2018
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Takashi Koyama, Mitsuaki Takeda, Johannes Lampela, Ross Carmichael, Philipp Haban, Tim Chuang, Hector Santos