Patents by Inventor Akira Fukushima

Akira Fukushima 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: 8991641
    Abstract: A toroidal pressure vessel having extremely high pressure resistance has laminated latitudinal reinforcing fiber layers to improve a strength in a latitudinal direction of the pressure vessel. Moreover, putting reinforcing fibers constituting those laminated latitudinal reinforcing fiber layers in continuity enables further improvement of strength in the latitudinal direction of the pressure vessel, for example compared with a case where the reinforcing fibers are divided for each layer.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: March 31, 2015
    Assignees: Mitsubishi Heavy Industries, Ltd., Shikibo Ltd.
    Inventors: Tetsuya Ozawa, Nozomu Kawasetsu, Kentaro Shindo, Mitsuru Kondo, Akira Fukushima, Masayasu Ishibashi, Takeshi Tanamura, Kazuo Nakajima, Hiroshi Sakai, Tetsuro Hirokawa
  • Patent number: 8987963
    Abstract: In a double drive shaft motor, a stator and a field rotor are arranged at a radially outer side of a magnetic modulation rotor. The stator and the field rotor are arranged in series in an axial direction of the motor. This structure increases an amount of a winding coil of the stator and magnets in the field rotor, and an output torque of the motor. When a field magnetic flux passes through soft magnetic material members in the magnetic modulation rotor, because the generation and the reception of the magnetic flux can occur at a radially same side of the magnetic modulation rotor, this structure cancels an eddy current generated in the soft magnetic members and supporting members made of non-magnetic metal which tightly support the soft magnetic member. This structure provides a reduced axial size of the motor with high performance.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: March 24, 2015
    Assignee: Denso Corporation
    Inventors: Shin Kusase, Akira Fukushima
  • Publication number: 20150041522
    Abstract: A brazing method includes fixing a padding plate on a base material such that the padding plate is arranged in a lower position from a groove formed in a repair region of the base material, and heating the base material such that a base material powder is melt, after a paste that base material 1 contains the base material powder which is formed from a same material as the base material is filled into the groove. The base material powder filled into groove can be prevented from flowing out from the groove even if being fused since the padding plate is arranged for the base material. Thus, a repair region can be repaired more appropriately.
    Type: Application
    Filed: December 18, 2013
    Publication date: February 12, 2015
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Tomoko OGASAHARA, Kosuke NISHIKAWA, Noriyuki HIRAMATSU, Akira FUKUSHIMA
  • Publication number: 20150040364
    Abstract: A repairing method includes heating a base material by a heater, and irradiating a laser beam to a repair region of the base material by using a laser oscillator unit, after the base material is heated. In the method, generation of a crack and a break can be suppressed, and the repair region can be repaired more appropriately.
    Type: Application
    Filed: December 18, 2013
    Publication date: February 12, 2015
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Tomoko OGASAHARA, Kosuke NISHIKAWA, Noriyuki HIRAMATSU, Akira FUKUSHIMA
  • Publication number: 20150044505
    Abstract: A manufacturing method of a TiAl joined body includes: an arranging step and a heating step. The arranging step is a step of arranging a plurality of members which contains a TiAl intermetallic compound and insert materials which contain Ti as a major element, Cu and Ni such that each of the insert materials is inserted between two adjacent members of the plurality of members. The heating step is a step of heating the plurality of members and the insert materials in a non-oxidizing atmosphere at a temperature above melting points of the insert materials and below melting points of the plurality of members.
    Type: Application
    Filed: October 28, 2013
    Publication date: February 12, 2015
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kosuke NISHIKAWA, Noriyuki HIRAMATSU, Akira FUKUSHIMA
  • Publication number: 20140232233
    Abstract: A multi-gap rotating electric machine includes a rotor, a stator core and a stator coil. The stator core has inner and outer core parts respectively located radially inside and outside of the rotor and each having partially or fully closed slots. The stator coil is formed of electric conductor segments each having a first leg portion inserted in one of the slots of the inner core part, a second leg portion inserted in one of the slots of the outer core part, and a connecting portion connecting the first and second leg portions on one axial side of the rotor. The first and second leg portions respectively have radially inner and outer coil end parts formed on the opposite axial side to the connecting portion. Corresponding radially inner coil end parts are joined to each other, and corresponding radially outer coil end parts are joined to each other.
    Type: Application
    Filed: February 5, 2014
    Publication date: August 21, 2014
    Applicant: DENSO CORPORATION
    Inventors: Akira FUKUSHIMA, Shin KUSASE, Takeo MAEKAWA, Keiji KONDOU
  • Publication number: 20140144889
    Abstract: Disclosed herein are bonded structures and methods of forming the same. One embodiment of a bonded structure comprises first and second metallic layers and a bonding interface between the first and second metallic layers formed by diffusion and comprising a layer of at least one intermetallic compound. The intermetallic compound layer is formed in an area 52% or greater of an area of the bonding interface and has a thickness of 0.5 to 3.2 ?m.
    Type: Application
    Filed: January 31, 2014
    Publication date: May 29, 2014
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Hiroshi Sakurai, Shigeyuki Nakagawa, Akira Fukushima, Sadao Yanagida, Chika Sugi
  • Patent number: 8610326
    Abstract: A stator which may be employed in an electric rotating machine. The stator includes a stator winding which includes in-slot portions disposed in slots of a stator core. The in-slot portions are arrayed in each of the slots in a form of multiple layers aligned in a radial direction of the stator core. The stator winding is made up of a first winding and a second winding which are connected together through a joint. The first winding is defined by a portion of the stator winding between the joint and an end of the stator winding which is to be connected to an external. The second winding includes the in-slot portion placed within at least one of the slots as an outermost layer that is one of the layers placed most outwardly in the radial direction of the stator core. This results in a great decrease in leakage current.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: December 17, 2013
    Assignee: Denso Corporation
    Inventors: Akira Fukushima, Keiji Kondo, Akito Akimoto, Takeo Maekawa, Makoto Taniguchi, Shin Kusase
  • Patent number: 8590651
    Abstract: In an intake system of an engine of a vehicle, an intake duct includes a horizontal portion having a front end and a rear end in the front-rear direction of the vehicle and located to extend in the front-rare direction of the vehicle to be opposite to a top face of a battery, and a vertical portion extending curvedly from the front end of the horizontal portion and extending downward in a height direction of the vehicle along a front face of the battery. The vertical portion is formed with an air intake at a bottom thereof in the height direction of the vehicle. The air intake is located at a front side of the battery in the front-rear direction of the vehicle to be higher in the height direction of the vehicle than a bottom edge of the front face of the battery. An opening of the air intake is directed downward in the height direction of the vehicle.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: November 26, 2013
    Assignee: Suzuki Motor Corporation
    Inventors: Daigo Shigematsu, Akira Fukushima
  • Patent number: 8570420
    Abstract: An image pickup system includes a plurality of electron multiplication image pickup apparatuses; and a correction coefficient calculating device. The correction coefficient calculating device measures electron multiplication properties of image signals output from the electron multiplication image pickup apparatuses on a regular basis, calculates correction coefficients that are used to adjust the sensitivity of image signals from the electron multiplication apparatus, and sets the calculated correction coefficients in the electron multiplication image pickup apparatuses.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: October 29, 2013
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Yutaka Muto, Akira Fukushima
  • Patent number: 8502605
    Abstract: An input terminal is connected to a positive-phase terminal of a differential amplification circuit. A negative-phase terminal of the differential amplification circuit is connected to an emitter electrode of a transistor, and an output terminal thereof is connected to a base electrode of the transistor. An input side resistor is connected between a collector electrode of the transistor and the input terminal, and a secondary input side resistor is connected between the input terminal and a ground conductor. An output side resistor is connected between the emitter electrode of the transistor and the ground conductor. The collector electrode of the transistor is connected to a load terminal.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: August 6, 2013
    Inventor: Akira Fukushima
  • Patent number: 8476549
    Abstract: A method of bonding dissimilar metals, a bonding structure formed by such a method and a bonding apparatus for performing such a method. The resulting bond is capable of preventing corrosion (e.g., electric corrosion) resulting from contact of the dissimilar metals and obtains a dissimilar material joint exhibiting anti-corrosive property and bonding strength at low costs. The method includes overlapping two materials made from dissimilar metals having a seal material interposed therebetween and discharging the seal material from a bonding interface and bonding the two materials in direct contact with each other.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: July 2, 2013
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Shigeyuki Nakagawa, Minoru Kasukawa, Kenji Miyamoto, Hiroshi Sakurai, Chika Yamamoto, Takashi Miyamoto, Akira Fukushima
  • Publication number: 20130057100
    Abstract: An electric rotary machine has a stator, a second rotor, and a first rotor which are arranged in order on a coaxial shaft. The first rotor has a plurality of magnetic poles having a different polarity. The stator has stator winding wires. The second rotor has a magnetic iron core and short circuit conductors. The magnetic iron core has first magnetic passage parts, second magnetic passage parts, and conductor holder parts. Both ends of the short circuit conductor is electrically connected to make a short circuit. The short circuit conductors are fitted to the corresponding conductor holder parts. No short circuit conductor surrounds each of the first magnetic passage parts. The short circuit conductors surround each of the second magnetic passage parts. The first magnetic passage parts and the second magnetic passage parts are alternately arranged along a circumferential direction of the second rotor.
    Type: Application
    Filed: September 4, 2012
    Publication date: March 7, 2013
    Applicant: DENSO CORPORATION
    Inventors: Akira FUKUSHIMA, Shin Kusase
  • Patent number: 8334632
    Abstract: A stator includes a stator-core having slots and teeth, and a back-yoke having convex and concave portions. The convex portions are partially inserted into the slots, and the concave portions receive the teeth. The teeth include tip portions whose circumferential widths become larger along a radial direction from the inside to the outside of the stator. The back-yoke includes convex portions whose circumferential widths become larger along the radial direction from the outside to the inside of the stator. The tip portions and the convex portions have substantially the same shape. The length of a joint portion between the tip portion and the convex portion, the circumferential width of the tooth corresponding to a tip surface of the convex portion, the width of a root portion of the tooth, and the circumferential width of the convex portion corresponding to a bottom face of the concave portion are substantially the same.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: December 18, 2012
    Assignee: Denso Corporation
    Inventors: Keiji Kondou, Makoto Taniguchi, Takeo Maekawa, Akira Fukushima, Akito Akimoto, Shin Kusase, Yuya Mizuma
  • Patent number: 8199392
    Abstract: A light-scanning device includes a polygon scanner having a rotatable polygon mirror which deflects a laser beam emitted from a light source, an optical image-forming element which images the deflected laser beam on a predetermined position, and an optical housing which supports the light source, the polygon scanner and the optical image-forming element, a non-rotational cylindrical shielding member for covering an upper part of the polygon scanner.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: June 12, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Akira Fukushima, Tomoya Ohsugi
  • Publication number: 20120092070
    Abstract: An input terminal is connected to a positive-phase terminal of a differential amplification circuit. A negative-phase terminal of the differential amplification circuit is connected to an emitter electrode of a transistor, and an output terminal thereof is connected to a base electrode of the transistor. An input side resistor is connected between a collector electrode of the transistor and the input terminal, and a secondary input side resistor is connected between the input terminal and a ground conductor. An output side resistor is connected between the emitter electrode of the transistor and the ground conductor. The collector electrode of the transistor is connected to a load terminal.
    Type: Application
    Filed: October 6, 2011
    Publication date: April 19, 2012
    Inventor: Akira FUKUSHIMA
  • Patent number: 8126621
    Abstract: In an engine load control device of a work vehicle, an output of an engine is transmitted to a hydraulic actuator via a variable displacement type hydraulic pump. A controller is configured to calculate, based on a target rotational speed of the engine detected by a target rotational speed detecting portion and an actual rotational speed of the engine detected by an actual rotational speed detecting portion, a variation rate per unit time of a difference between the detected results, and to adjust the maximum absorbing torque of the hydraulic pump according to the magnitude of the variation rate.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: February 28, 2012
    Assignee: Komatsu Ltd.
    Inventors: Shotaro Ishii, Akira Fukushima
  • Publication number: 20120024866
    Abstract: Provided is a toroidal pressure vessel having extremely high pressure resistance. Laminating latitudinal reinforcing fiber layers (32) enables to improve a strength in a latitudinal direction of a pressure vessel (1). Moreover, putting reinforcing fibers (32a) constituting those laminated latitudinal reinforcing fiber layers (32) in continuity enables to further improve the strength in the latitudinal direction of the pressure vessel (1), for example compared with a case where the reinforcing fibers are divided for each layer.
    Type: Application
    Filed: April 15, 2011
    Publication date: February 2, 2012
    Inventors: Tetsuya Ozawa, Nozomu Kawasetsu, Kentaro Shindo, Mitsuru Kondo, Akira Fukushima, Masayasu Ishibashi, Takeshi Tanamura, Kazuo Nakajima, Hiroshi Sakai, Tetsuro Hirokawa
  • Publication number: 20110261234
    Abstract: An image pickup system includes a plurality of electron multiplication image pickup apparatuses; and a correction coefficient calculating device. The correction coefficient calculating device measures electron multiplication properties of image signals output from the electron multiplication image pickup apparatuses on a regular basis, calculates correction coefficients that are used to adjust the sensitivity of image signals from the electron multiplication apparatus, and sets the calculated correction coefficients in the electron multiplication image pickup apparatuses.
    Type: Application
    Filed: March 9, 2011
    Publication date: October 27, 2011
    Applicant: Hitachi Kokusai Electric Inc.
    Inventors: Yutaka Muto, Akira Fukushima
  • Publication number: 20110163625
    Abstract: A stator which may be employed in an electric rotating machine. The stator includes a stator winding which includes in-slot portions disposed in slots of a stator core. The in-slot portions are arrayed in each of the slots in a form of multiple layers aligned in a radial direction of the stator core. The stator winding is made up of a first winding and a second winding which are connected together through a joint. The first winding is defined by a portion of the stator winding between the joint and an end of the stator winding which is to be connected to an external. The second winding includes the in-slot portion placed within at least one of the slots as an outermost layer that is one of the layers placed most outwardly in the radial direction of the stator core. This results in a great decrease in leakage current.
    Type: Application
    Filed: January 5, 2011
    Publication date: July 7, 2011
    Applicant: DENSO CORPORATION
    Inventors: Akira FUKUSHIMA, Keiji Kondo, Akito Akimoto, Takeo Maekawa, Makoto Taniguchi, Shin Kusase