Patents by Inventor Yoshimasa Ohashi
Yoshimasa Ohashi 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).
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Patent number: 9885995Abstract: An aluminum alloy has a composition consisting of Si: 0.03 to 0.6 mass %, Fe: 0.1 to 0.7 mass %, Cu: 0.05 to 0.20 mass %, Mn: 1.0 to 1.5 mass %, Mg: 0.01 to 0.1 mass %, Zn: 0 to 0.1 mass %, Ti: 0 to 0.1 mass %, and the balance being Al and inevitable impurities.Type: GrantFiled: June 25, 2012Date of Patent: February 6, 2018Assignee: SHOWA DENKO K.K.Inventors: Yoshimasa Ohashi, Koji Hisayuki, Yoshikazu Kato, Kazunori Sakayori, Ryouta Kimura, Shigeru Aoya
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Publication number: 20140227130Abstract: An aluminum alloy has a composition consisting of Si: 0.03 to 0.6 mass %, Fe: 0.1 to 0.7 mass %, Cu: 0.05 to 0.20 mass %, Mn: 1.0 to 1.5 mass %, Mg: 0.01 to 0.1 mass %, Zn: 0 to 0.1 mass %, Ti: 0 to 0.1 mass %, and the balance being Al and inevitable impurities.Type: ApplicationFiled: June 25, 2012Publication date: August 14, 2014Applicant: SHOWA DENKO K.K.Inventors: Yoshimasa Ohashi, Koji Hisayuki, Yoshikazu Kato, Kazunori Sakayori, Ryouta Kimura, Shigeru Aoya
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Patent number: 8739569Abstract: A liquefied gas reliquefier reliquefies boil-off gas resulting from evaporation of liquefied gas in a liquefied-gas storage tank to prevent a rise in the internal pressure of the liquefied-gas storage tank. The liquefied gas reliquefier includes a cooling unit for liquefying a secondary refrigerant, a liquefied-secondary-refrigerant feeding unit for feeding the liquefied secondary refrigerant, and a heat exchange unit disposed in the secondary-refrigerant circulating channel to condense the BOG by heat exchange between the BOG and the liquefied secondary refrigerant. The heat exchange unit is disposed near the liquefied-gas storage tank. The cooling unit includes a plurality of pulse-tube refrigerators. The number of pulse-tube refrigerators in operation and/or the cooling capacities of the individual pulse-tube refrigerators are controlled based on a measurement result from at least one of a thermometer, a pressure gauge, and a pump discharge flow meter installed in the liquefied-gas storage tank.Type: GrantFiled: February 26, 2009Date of Patent: June 3, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Masaru Oka, Sai Hiramatsu, Hitoshi Kondo, Yoshimasa Ohashi, Shigeo Nagaya, Tsutomu Tamada
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Patent number: 8384255Abstract: A superconducting rotating electrical machine configuring a motor or generator, includes a base member, a stator supported by the base member, a rotor rotatably provided relative to the stator and including a superconducting material, a rotary shaft supporting the rotor, a cooling portion cooling the stator, a low temperature container forming an accommodating chamber accommodating the stator, the rotor, and a coolant, the accommodating chamber being arranged within the base member, a vacuum heat insulation chamber arranged at an outer side of the accommodating chamber and thermally insulating the accommodating chamber with vacuum, and a bearing positioned a portion of the base member where the accommodating chamber is prevented from being provided and which is exposed to an ambient atmosphere including atmospheric air, the bearing rotatably supporting the rotary shaft.Type: GrantFiled: September 8, 2010Date of Patent: February 26, 2013Assignee: Aisin Seiki Kabushiki KaishaInventors: Yoshimasa Ohashi, Nobuo Okumura
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Patent number: 8362860Abstract: A superconducting apparatus includes a superconducting member generating a magnetic field when an electric power is supplied to the superconducting member, a permeable yoke into which a magnetic flux of the magnetic field generated by the superconducting member permeates, and a conductive portion cooled to a low temperature state by a low temperature portion and cools the permeable yoke by thermally making contact therewith.Type: GrantFiled: January 27, 2010Date of Patent: January 29, 2013Assignees: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki KaishaInventors: Yoshimasa Ohashi, Nobuo Okumura, Hidetoshi Kusumi
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Patent number: 8283821Abstract: A superconducting apparatus includes a magnetic field generating portion including a superconducting coil, an extremely low temperature generating portion maintaining the superconducting coil at an extremely low temperature and in a superconducting state, a container defining a heat insulation chamber that accommodates the superconducting coil, a first terminal electrically connected to the superconducting coil and supplying an electric power to the superconducting coil, a second terminal connected to an external electric power source and supplying the electric power to the first terminal in a case where the magnetic field generating portion is driven, and a heat penetration preventing element holding one of the first and second terminals and thermally separating the first and second terminals from each other in a case where a driving of the magnetic field generating portion is stopped, the heat penetration preventing element restraining a heat penetration from the second terminal to the first terminal.Type: GrantFiled: December 16, 2009Date of Patent: October 9, 2012Assignees: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki KaishaInventors: Yoshimasa Ohashi, Nobuo Okumura, Hidetoshi Kusumi
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Patent number: 8283816Abstract: A vacuum container for housing therein a superconducting apparatus includes first and second partition walls made of magnetic-permeable nonmetallic materials, respectively, and facing each other to form a vacuum heat insulation chamber that is adapted to cover a superconductor that generates a magnetic flux. The first and second partition walls are exposed to relatively higher and lower temperatures, respectively. The first partition wall includes a radiation surface emitting thermal radiation while the second partition wall includes an absorption surface absorbing the thermal radiation. One of the radiation surface and the absorption surface is provided with a metal layer group in an exposed manner relative to the other of the radiation surface and the absorption surface. The metal layer group includes a plurality of metal layers spaced apart from one another and the nonmetallic material appears between the plurality of metal layers.Type: GrantFiled: December 17, 2009Date of Patent: October 9, 2012Assignees: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki KaishaInventors: Yoshimasa Ohashi, Nobuo Okumura, Hidetoshi Kusumi
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Publication number: 20120165198Abstract: A superconducting electric motor includes: a rotor that is rotatably arranged; and a stator that is arranged in a radial direction of the rotor so as to face the rotor. The stator has a plurality of superconducting coils that are wound at a radial end portion of a stator core and that are formed of a superconducting wire material. The superconducting electric motor includes a refrigerator that has at least one narrow tube that flows low-temperature refrigerant inside. The at least one narrow tube is in thermal contact with the stator core and at least one of the coils.Type: ApplicationFiled: December 22, 2011Publication date: June 28, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryoji Mizutani, Yoshimasa Ohashi, Nobuo Okumura, Kenji Ishida
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Publication number: 20120161557Abstract: A superconducting electric motor includes: a rotor that is rotatably arranged; and a stator. The stator has a plurality of teeth provided on one radial end portion of a stator core and slots, each of which is provided between two of the plurality of teeth, adjacent in a circumferential direction of the stator. Coils are respectively wound around the teeth. The superconducting electric motor further includes a refrigerator that has a narrow tube that flows low-temperature refrigerant inside. At least part of the narrow tube is arranged between two of the coils, adjacent in the circumferential direction of the stator, in one of the slots.Type: ApplicationFiled: December 16, 2011Publication date: June 28, 2012Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryoji MIZUTANI, Yoshimasa OHASHI, Nobuo OKUMURA, Kenji ISHIDA
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Publication number: 20120161556Abstract: A superconducting electric motor includes: a rotor rotatably arranged; a stator arranged in a radial direction of the rotor to face the rotor; and a refrigerator having at least one narrow tube that flows low-temperature refrigerant inside. The stator has a plurality of superconducting coils wound at a radial end portion of a stator core and formed of a superconducting wire material. The at least one narrow tube has a core penetrating portion that is provided to penetrate through the stator core. Alternatively, the refrigerator has a plurality of narrow tubes, and at least part of each narrow tube is provided in the stator core. Connecting portions that are refrigerant supply/drain connecting portions at both ends of each of the plurality of narrow tubes are provided on both axial sides of the stator at opposite sides in a diametrical direction with respect to a rotation central axis of the rotor.Type: ApplicationFiled: December 12, 2011Publication date: June 28, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryoji MIZUTANI, Yoshimasa Ohashi, Nobuo Okumura, Kenji Ishida
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Publication number: 20110277953Abstract: A superconducting motor includes: a rotor that is rotatably supported; a stator that is provided around the rotor, and that is provided with a plurality of coils that are respectively formed of superconducting wires and that are wound at an inner periphery of a stator core; and a refrigerator having a cooling portion for cooling the plurality of coils. The cooling portion of the refrigerator is in contact with the plurality of coils.Type: ApplicationFiled: May 16, 2011Publication date: November 17, 2011Applicants: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki KaishaInventors: Ryoji Mizutani, Yoshimasa Ohashi, Nobuo Okumura, Kenji Ishida
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Publication number: 20110062806Abstract: A superconducting rotating electrical machine configuring a motor or generator, includes a base member, a stator supported by the base member, a rotor rotatably provided relative to the stator and including a superconducting material, a rotary shaft supporting the rotor, a cooling portion cooling the stator, a low temperature container forming an accommodating chamber accommodating the stator, the rotor, and a coolant, the accommodating chamber being arranged within the base member, a vacuum heat insulation chamber arranged at an outer side of the accommodating chamber and thermally insulating the accommodating chamber with vacuum, and a bearing positioned a portion of the base member where the accommodating chamber is prevented from being provided and which is exposed to an ambient atmosphere including atmospheric air, the bearing rotatably supporting the rotary shaft.Type: ApplicationFiled: September 8, 2010Publication date: March 17, 2011Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Yoshimasa Ohashi, Nobuo Okumura
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Publication number: 20110025438Abstract: A superconducting apparatus includes a superconducting member generating a magnetic field when an electric power is supplied to the superconducting member, a permeable yoke into which a magnetic flux of the magnetic field generated by the superconducting member permeates, and a conductive portion cooled to a low temperature state by a low temperature portion and cools the permeable yoke by thermally making contact therewith.Type: ApplicationFiled: January 27, 2010Publication date: February 3, 2011Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshimasa OHASHI, Nobuo Okumura, Hidetoshi Kusumi
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Publication number: 20100170297Abstract: A liquefied gas reliquefier that can be configured compactly and that is easy to handle is provided. A liquefied gas reliquefier (1) reliquefies BOG resulting from evaporation of LNG in a cargo tank (3). The liquefied gas reliquefier (1) includes a refrigerator group (20) disposed in a secondary-refrigerant circulating channel (24) through which nitrogen, which has a lower condensation temperature than the BOG, circulates to liquefy the nitrogen; a feed pump (22) for feeding the liquid nitrogen cooled by the refrigerator group (20) through the secondary-refrigerant circulating channel (24); and a heat exchanger (12) disposed in the secondary-refrigerant circulating channel (24) to condense the BOG by heat exchange between the BOG and the liquid nitrogen fed by the feed pump (22). The heat exchanger (12) is disposed near the cargo tank (3).Type: ApplicationFiled: February 26, 2009Publication date: July 8, 2010Inventors: Masaru Oka, Sai Hiramatsu, Hitoshi Kondo, Yoshimasa Ohashi, Shigeo Nagaya, Tsutomu Tamada
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Publication number: 20100164309Abstract: A superconducting motor apparatus includes a superconducting motor including a superconducting coil and a mover movable on a basis of a movable magnetic field generated by the superconducting coil when an electric power is supplied thereto, a container defining an outer vacuum heat insulation chamber that covers an outer side of the superconducting motor, an extremely low temperature generating portion cooling the superconducting coil of the superconducting motor to a temperature equal to or smaller than a critical temperature of the superconducting coil, and a vibration damping element restraining one of or both of a vibration of the superconducting motor and an external vibration from being propagated to the extremely low temperature generating portion.Type: ApplicationFiled: December 17, 2009Publication date: July 1, 2010Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshimasa OHASHI, Sho Mitsuhashi, Nobuo Okumura, Hidetoshi Kusumi
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Publication number: 20100148593Abstract: A vacuum container for housing therein a superconducting apparatus includes first and second partition walls made of magnetic-permeable nonmetallic materials, respectively, and facing each other to form a vacuum heat insulation chamber that is adapted to cover a superconductor that generates a magnetic flux. The first and second partition walls are exposed to relatively higher and lower temperatures, respectively. The first partition wall includes a radiation surface emitting thermal radiation while the second partition wall includes an absorption surface absorbing the thermal radiation. One of the radiation surface and the absorption surface is provided with a metal layer group in an exposed manner relative to the other of the radiation surface and the absorption surface. The metal layer group includes a plurality of metal layers spaced apart from one another and the nonmetallic material appears between the plurality of metal layers.Type: ApplicationFiled: December 17, 2009Publication date: June 17, 2010Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshimasa Ohashi, Nobuo Okumura, Hidetoshi Kusumi
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Publication number: 20100148894Abstract: A superconducting apparatus includes a magnetic field generating portion including a superconducting coil, an extremely low temperature generating portion maintaining the superconducting coil at an extremely low temperature and in a superconducting state, a container defining a heat insulation chamber that accommodates the superconducting coil, a first terminal electrically connected to the superconducting coil and supplying an electric power to the superconducting coil, a second terminal connected to an external electric power source and supplying the electric power to the first terminal in a case where the magnetic field generating portion is driven, and a heat penetration preventing element holding one of the first and second terminals and thermally separating the first and second terminals from each other in a case where a driving of the magnetic field generating portion is stopped, the heat penetration preventing element restraining a heat penetration from the second terminal to the first terminal.Type: ApplicationFiled: December 16, 2009Publication date: June 17, 2010Applicants: Aisin Seiki Kabushiki Kaisha, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshimasa OHASHI, Nobuo Okumura, Hidetoshi Kusumi
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Publication number: 20070062668Abstract: A method of manufacturing an aluminum extruded raw pipe capable of suppressing the surface roughness of the extruded raw pipe and a method of manufacturing an aluminum pipe to be used as a photosensitive drum excellent in surface quality are provided. In a method of manufacturing an aluminum extruded raw pipe by extruding an aluminum billet 1, as the billet 1, a billet whose maximum value of the thickness T of the solidified shell layer 2 of the external peripheral surface is 13 mm or less is used. By subjecting the obtained aluminum extruded raw pipe to a drawing process or an ironing process, an aluminum pipe equipped with surface quality preferable to a photosensitive drum can be obtained.Type: ApplicationFiled: May 12, 2004Publication date: March 22, 2007Applicant: SHOWA DENKO K.K.Inventors: Yoshimasa Ohashi, Masamichi Kitano
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Patent number: 5966944Abstract: A superconducting magnet system, such as an NMR apparatus, is outfitted with a compact-size refrigerator that prevents mechanical vibrations produced by the refrigerator from being transmitted to the superconducting magnet system. The refrigerator is in the form of a pulse tube refrigerator having a cold head and a pressure oscillation generating source. The cold head of the pulse tube refrigerator is connected directly to a vacuum insulation vessel of the superconducting magnet system. Cold generated from the cold head cools a cooling device, for example, a liquid helium tank for cooling the superconducting coil, or a heat penetration reducing device, for example, a liquid nitrogen tank, for reducing heat penetration from outside.Type: GrantFiled: April 9, 1998Date of Patent: October 19, 1999Assignee: Aisin Seiki Kabushiki KaishaInventors: Tatsuo Inoue, Yoshimasa Ohashi
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Patent number: 5943013Abstract: In a direction finder, a frequency distribution of the directions in which radio sources are located is obtained in a manner that an antenna platform is rotated while setting an instantaneous field of view invariable or varying the same, whereby the above phenomenon is suppressed.Type: GrantFiled: April 28, 1998Date of Patent: August 24, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Yoshimasa Ohashi