Patents by Inventor Akira Hashimoto

Akira Hashimoto 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: 10432070
    Abstract: A rotating electric machine includes: a stator having an armature core having slots formed between magnetic pole teeth, and a plurality of coils each of which is wound so as to straddle a plurality of the magnetic pole teeth; and a rotor including a plurality of permanent magnets disposed at certain intervals on an outer peripheral surface of the magnetic yoke, and the coils include an armature coil for driving the rotating electric machine and a non-armature coil for magnetizing or demagnetizing the permanent magnets of the rotor.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: October 1, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Sachiko Kawasaki, Hironori Tsuiki, Akira Hashimoto, Takashi Umeda
  • Patent number: 10404115
    Abstract: A contour line on the outer circumferential side of each magnet hole in the first layer is formed to be an arc passing through a total of three intersections, i.e., an intersection of a d axis and a reference magnetic flux line which is a magnetic flux line as a reference positioned inward by a predetermined number of magnetic flux lines from the outer circumferential edge of a rotor core, and intersections of: the reference magnetic flux line; and sides at the circumferential ends of the magnet hole which are positioned inward by a bridge dimension from the outer circumferential edge of the rotor core. Thus, a rotary electric machine that enables maximum utilization of reluctance torque and magnet torque and suppression of torque ripple can be obtained with simple processing and low cost.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: September 3, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Sachiko Kawasaki, Kimiyasu Furusawa, Atsushi Sakaue, Akira Hashimoto, Hiroyuki Akita, Moriyuki Hazeyama, Masaya Inoue, Shinji Nishimura
  • Patent number: 10333360
    Abstract: An iron core member has: first divided yoke portions; second divided yoke portions alternately arranged with the first divided yoke portions; a first tooth portion extending from one circumferential end of each first divided yoke portion, a second tooth portion extending from the other circumferential end; a third tooth portion extending from one circumferential end of the second divided yoke portion on the second tooth portion side, and a fourth tooth portion extending from the other circumferential end. A tooth end portion of the first tooth portion and a tooth end portion of the adjacent fourth tooth portion are integrally joined at a first tooth end joint portion, and a tooth end portion of the second tooth portion and a tooth end portion of the adjacent third tooth portion are integrally joined at a second tooth end joint portion, thereby providing one continuous sheet of the core member.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: June 25, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tatsuro Hino, Akira Hashimoto, Masaya Inoue, Akihiro Yamamura, Shogo Okamoto, Atsushi Sakaue, Hironori Tsuiki
  • Patent number: 10316421
    Abstract: The present invention provides a copper-nickel alloy electroplating bath which contains (a) a copper salt and a nickel salt, (b) a metal complexing agent, (c) a conductivity imparting agent, (d) a sulfur-containing organic compound and (e) a redox potential regulator.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: June 11, 2019
    Assignee: DIPSOL CHEMICALS CO., LTD.
    Inventors: Hitoshi Sakurai, Kazunori Ono, AKira Hashimoto, Satoshi Yuasa
  • Patent number: 10309025
    Abstract: The purpose of the present invention is to provide an electrical Al plating bath that poses little danger of exploding or igniting as a result of contacting air or water, and contains no benzene, toluene, xylene, naphthalene, or 1,3,5-trimethylbenzene, which have detrimental effects to humans. The present invention provides an electrical aluminum or aluminum alloy fused salt plating bath that is obtained by heat treatment of an electrical aluminum or aluminum alloy fused salt plating bath containing (A) a halogenated aluminum as the primary component and (B) at least one other type of halide after adding (C) one, two or more reducible compounds selected from the group consisting of hydrides of elements in Group 1 Periods 2 through 6 of the Periodic Table of Elements and/or hydrides of Group 13 Periods 2 through 6 of the Periodic Table of Elements and amine borane compounds.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: June 4, 2019
    Assignee: DIPSOL CHEMICALS CO., LTD.
    Inventors: Manabu Inoue, Akira Hashimoto, Tadahiro Onuma, Toshiki Inomata, Keisuke Nonomura, Naruaki Konno
  • Publication number: 20190127667
    Abstract: Provided is a cleaning solvent composition that comprises a cis-1-chloro-3,3,3-trifluoropropene solvent and an additive, wherein the additive contains at least one type of compound selected from the group consisting of nitroalkanes and epoxides.
    Type: Application
    Filed: July 13, 2017
    Publication date: May 2, 2019
    Inventors: Takayuki YAMATOJI, Akira HASHIMOTO, Manabu INOUE
  • Patent number: 10250092
    Abstract: Winding bodies are configured such that radially inner terminals of a conductor wire extend outward at a first axial end of an armature core from a radially innermost position inside slots, and radially outer terminals of the conductor wire extend outward at the first axial end of the armature core from a radially outermost position inside the slots, and respective phase windings of an armature winding are configured by directly joining together the radially inner terminals and by directly joining together the radially outer terminals of the winding bodies that constitute identical phases.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: April 2, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hironori Tsuiki, Atsushi Sakaue, Hiroyuki Akita, Akira Hashimoto
  • Publication number: 20190088219
    Abstract: A liquid-crystal driving device is formed by integrating: an external output terminal to which a source line of an LCD panel is exteriorly connected; a first driver which generates a first source signal having three or more gradations (for example, 256 gradations) and outputs the first source signal to the external output terminal; an abnormality detection unit (a logic unit and an output monitor unit) which detects an abnormality in the first source signal; and a second driver which, when an abnormality in the first source signal is detected, generates a second source signa) having two gradations and outputs the second source signal to the external output terminal. The LCD panel is driven in a predetermined polarity inversion drive system, and the abnormality detection unit, for example, monitors polarity inversion of the first source signal in a fly-back period and detects an abnormality in the first source signal.
    Type: Application
    Filed: February 8, 2017
    Publication date: March 21, 2019
    Applicant: Rohm Co., Ltd.
    Inventors: Sukenori Ito, Akira Hashimoto
  • Patent number: 10236738
    Abstract: The armature winding is configured by mounting into slot pairs n types of winding bodies that are each configured by winding a conductor wire for m turns into a helical shape, where m is a natural number that is greater than or equal to two, the n types of winding bodies have different spacings between rectilinear portions that are linked by coil ends, are housed in n adjacent pairs of slot pairs, and are configured so as to be concentric, the coil ends include a top portion at an approximately central portion, and the radial displacement at the top portion is approximately a×d, where a is a natural number that is greater than or equal to 1 and less than or equal to (m?1), and d is a radial thickness of the rectilinear portions that are housed inside the slots.
    Type: Grant
    Filed: February 18, 2013
    Date of Patent: March 19, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hironori Tsuiki, Hiroyuki Akita, Atsushi Sakaue, Masaya Inoue, Akira Hashimoto
  • Patent number: 10199887
    Abstract: A core segment linked body when opened out rectilinearly is configured: such that a distance between adjacent width reduced portions is greater than a width dimension of width expanded portions when adjacent core segments are in an expanded position, and the distance between the adjacent width reduced portions is less than the width dimension of the width expanded portions when the adjacent core segments are in a contracted position; and so as to satisfy (te?tn)/?s?>0, and 0<(te?tn)/te?0.27, where ?s? is a distance between center lines of the adjacent magnetic pole teeth in the expanded position, te is a width dimension of tooth main portions, and tn is the width dimension of the width reduced portions.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: February 5, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ryuichi Takiguchi, Akira Hashimoto, Takanori Komatsu, Katsunori Oki, Satoru Hasegawa, Susumu Oshima
  • Publication number: 20190036390
    Abstract: A stator core of a rotary electric machine includes: an outer core that is an annular back yoke portion; and an inner core in which a plurality of teeth are radially arranged and inner side end portions of the teeth adjacent to each other in a circumferential direction are connected to each other in the circumferential direction by connection portions and which is fitted to an inner side of the outer core, each connection portion has a hole penetrating in an axial direction, each connection portion is split into a plurality of sections by the hole, a width in a radial direction of the one connection portion at a portion of the connection portion that has a smallest width in the radial direction is equal to or greater than ¼ and less than ½ of a sheet thickness of each of sheets.
    Type: Application
    Filed: February 22, 2017
    Publication date: January 31, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji Kawamura, Akira Hashimoto, Hiroyuki Akita, Sachiko Kawasaki, Naohiro Motoishi, Takatoshi Masuda
  • Patent number: 10184224
    Abstract: An edge of a guide hole includes a first contact portion, a second contact portion, and a guide portion. The first contact portion is in contact with the second connecting pin while the second connecting pin is positioned in the lock actuation position. The second contact portion is in contact with the second connecting pin while the second connecting pin is positioned in the lock release position. The guide portion extends in a direction intersecting the movement direction of the second connecting pin between the first contact portion and the second contact portion. The guide portion is pressed by the second connecting pin that moves from the lock actuation position to the lock release position in order to resist the urging force of an urging member and cause the second lock member to move from the locked position to the unlocked position.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: January 22, 2019
    Assignee: KOMATSU LTD.
    Inventors: Daijiro Ito, Tsuyoshi Yoshida, Akira Hashimoto, Takuya Tsukada, Kenichi Higuchi
  • Patent number: 10170950
    Abstract: First and second winding bodies are each configured so as to have a helical shape by winding a conductor wire for m turns, where m is a natural number that is greater than or equal to two, an armature winding is configured by mounting two-lane winding bodies into respective pairs of slots, two-lane winding bodies being configured by assembling the first and second winding bodies, the coil ends include a top portion that displaces in a radial direction at a central portion, and the radial displacement at the top portion is a×d, where a is a natural number that is greater than or equal to 2 and less than or equal to 2×(m?1), and d is a radial thickness of the rectilinear portions, 4×m of the rectilinear portions being housed inside the slots so as to line up in single columns.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: January 1, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Atsushi Sakaue, Hironori Tsuiki, Hiroyuki Akita, Akira Hashimoto
  • Patent number: 10164490
    Abstract: In a rotary electric machine according to the present invention, an armature winding includes a plurality of distributed winding bodies that are each produced by winding a single conductor wire that is insulated, that is jointless and continuous, and that has a constant cross-sectional area perpendicular to a longitudinal direction, the conductor wires include first through third coil end portions that link first through fourth rectilinear portions and first through fourth rectilinear portions, and are formed such that radial widths w? of the first through fourth rectilinear portions are wider than radial widths w of the first through third coil end portions.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: December 25, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hironori Tsuiki, Tatsuro Hino, Atsushi Sakaue, Akira Hashimoto, Kazunori Muto, Masashi Nakamura, Shinkichi Sawa, Hiroyuki Akita
  • Patent number: 10156020
    Abstract: The present invention provides a zinc alloy electroplating method comprising applying a current through an alkaline zinc alloy electroplating bath comprising a cathode and an anode, wherein a cathode region including the cathode and an anode region including the anode are separated from each other by an anion exchange membrane, a catholyte contained in the cathode region is an alkaline zinc alloy plating liquid, and an anolyte contained in the anode region is an aqueous alkaline solution.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: December 18, 2018
    Assignee: DIPSOL CHEMICALS CO., LTD.
    Inventors: Toshihiro Niikura, Takahiro Fujimori, Akira Hashimoto, Manabu Inoue
  • Patent number: 10153674
    Abstract: An armature for an electric machine according to the present invention includes: an armature core in which a plurality of slots are arranged in a circumferential direction; and an armature winding that is mounted to the armature core, and includes a plurality of two-lane winding bodies that are each produced by stacking and winding two jointless continuous conductor wires that are coated with insulation such that the two conductor wires are stacked in a radial direction of the armature core, the two-lane winding bodies being arranged at a pitch of one slot in a circumferential direction so as to be mounted into a third slot, a first slot, and a second slot that line up consecutively in the circumferential direction at an angular spacing of six slots.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: December 11, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hironori Tsuiki, Atsushi Sakaue, Akira Hashimoto, Hiroyuki Akita, Masaya Inoue
  • Patent number: 10153673
    Abstract: Bridge portions forming coil end portions, at both ends in an axial direction, of a stator of the rotating electrical machine according to the present invention are configured coaxially about an axis of the stator; at least one bridge portion of the bridge portions of each coil at both ends in the axial direction is located outward of an inner peripheral surface of the stator; and a gap is present between an end surface of a stator core in the axial direction and each bridge portion.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: December 11, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hironori Tsuiki, Hiroyuki Akita, Akira Hashimoto, Koji Kawamura, Sachiko Kawasaki, Atsushi Sakaue
  • Patent number: 10128700
    Abstract: A core segment linked body is configured by linking a plurality of core segments by inserting first shafts of first core segments into first slots of core segments near a first longitudinal end thereof, and inserting second shafts of core segments near the first longitudinal end thereof into second slots of the first core segments, the linked core segments are expandable and contractible between an expanded position in which an interval between the magnetic pole tooth is expanded and a contracted position in which the interval is reduced by the first shafts being guided by the first slots and the second shafts being guided by the second slots, and central axes of the first shafts and the second shafts are: offset in a longitudinal direction of the back yoke in the expanded position; and positioned collinearly in a direction of lamination in the contracted position.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: November 13, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takashi Umeda, Akira Hashimoto, Katsunori Oki
  • Patent number: 10110083
    Abstract: A side surface at the outside of a plurality of teeth portions of one separated core is faced to a side surface of teeth portions of an adjacent separated core, so as to form a second slot which is straddled between the adjacent separated cores, and a first slot is formed by a plurality of teeth portions of one separated core, and a width size of the first slot is identical to a width size of the second slot, and coil conductor storage space is formed in the first slot via a first insulating component, and coil conductor storage space is formed in the second slot via a second insulating component, and a thickness size of the first insulating component is different from a thickness size of the second insulating component.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: October 23, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Manabu Yoshinori, Atsushi Sakaue, Tatsuro Hino, Hironori Tsuiki, Shinichi Okada, Hiroki Shiota, Masaya Inoue, Shogo Okamoto, Shinji Nishimura, Akira Hashimoto, Shinkichi Sawa, Yutaka Ikura, Ryuichi Kitora
  • Patent number: 10097058
    Abstract: In a rotary electric machine, an armature core includes a plurality of magnetic pole teeth and slots are formed between the magnetic pole teeth. An armature coil group includes a plurality of armature coils each including a pair of coil sides arranged in the slots, which are different from one another, and coil ends connecting the pair of coil sides. The armature coil group includes, as the armature coils, a plurality of base coils, of which one coil side is arranged in an upper opening of the slot and the other coil side is arranged in a lower opening of the slot, upper layer coils, of which both one coil side and the other coil side are arranged in an upper opening of the slot, and lower layer coils, of which both one coil side and the other coil side are arranged in the lower opening of the slot.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: October 9, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takashi Umeda, Akira Hashimoto