Patents by Inventor Shinji Matsushita
Shinji Matsushita 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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Publication number: 20240090188Abstract: It is provided that an electromagnetic wave shielding material that can effectively shield a low frequency magnetic field. An electromagnetic wave shielding material comprising: a layer A containing an inorganic fiber; and a layer B containing a metal fiber, wherein at least one of the layer A and the layer B contains a resin.Type: ApplicationFiled: February 10, 2022Publication date: March 14, 2024Applicant: YUHO CO., LTD.Inventors: Masaya MATSUSHITA, Shinji NOJIMA
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Publication number: 20230321728Abstract: The present disclosure provides an additive manufacturing method by which a uniform powder bed can be formed even when the interior of a chamber is depressurized and a powder bed is formed on a stage as the stage is preheated and an inert gas is supplied. An additive manufacturing method for a shaped object S includes forming a powder bed PB on a stage 51 in a chamber 10, and fusing the powder bed PB by laser emission. According to this additive manufacturing method, a pressure in the chamber 10 is reduced to a pressure equal to or higher than 8000 [Pa] and equal to or lower than 30,000 [Pa], and the powder bed PB is formed on the stage 51 as the stage 51 is preheated and an inert gas is supplied.Type: ApplicationFiled: March 8, 2021Publication date: October 12, 2023Inventors: Hirotsugu KAWANAKA, Noboru SAITO, Shinji MATSUSHITA
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Publication number: 20220203455Abstract: The present invention relates to an apparatus, method, and reference sample for searching for molding conditions of an additive manufacturing apparatus based on a powder bed fusion method, and provides a search apparatus, a search method, and a reference sample that are remarkably more efficient and accurate than conventional counterparts. The reference sample for searching for the molding conditions is shaped so that it has a surface having aggregated punched holes formed by straight lines and curved lines involved in a fill region of a molding region (in-skin), a region for forming an overhang (down-skin), and a region for forming an outermost surface in the direction of molding height (up-skin). Slice data of the reference sample has at least two independent regions in an optional layer at a center in a lamination direction, and includes a small region and a large region. The small region has a width of 1 mm or less and is cut off from the outer edge of the reference sample.Type: ApplicationFiled: December 13, 2021Publication date: June 30, 2022Inventors: Hirotsugu KAWANAKA, Hyakka NAKADA, Noboru SAITOU, Shinji MATSUSHITA
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Publication number: 20210323085Abstract: Intended is to improve the corrosion resistance of an overlay used in a nuclear power plant, and to reduce dissolution of cobalt from an overlay. The corrosion and wear resistant overlay 7 is formed along a surface of a base 2 by laser lamination modeling, and is configured from a plurality of metal layers 1a, 1b, 1c, and 1d of a Co-base alloy. The thickness of carbide eutectics that precipitate in the metal layers 1a, 1b, 1c, and 1d is the largest in the metal layer 1a closest to the base 2, and is gradually smaller in the metal layers 1b, 1c, and 1d farther away from the base 2. The intensity of the laser beam applied to form layers by laser lamination modeling is adjusted so that the carbide eutectics that precipitate in at least the outermost metal layer 1d have a controlled size of 10 ?m or less.Type: ApplicationFiled: June 30, 2021Publication date: October 21, 2021Inventors: Sei HIRANO, Yoshihisa KIYOTOKI, Hajime MIYATA, Hirotsugu KAWANAKA, Shinji MATSUSHITA, Hiroshi SHIRATORI
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Patent number: 10538241Abstract: A vehicle front-wheel turning control apparatus includes a drive force transmission path, a braking force controller, a detector, and a front-wheel turning controller. The detector detects one of occurred contact of the vehicle with respect to a forward object at an occurred contact position and unavoidable contact thereof at an unavoidable contact position. The front-wheel turning controller turns one, of the left and right front wheels, to which the drive force is transmitted, by causing the braking force controller to apply the braking force to the one of the left and right front wheels, on a basis of a state of the drive force transmitted to each of the left and right front wheels and one of the occurred and unavoidable contact positions, when the one of the occurred contact and the unavoidable contact is detected by the detector.Type: GrantFiled: June 23, 2017Date of Patent: January 21, 2020Assignee: SUBARU CORPORATIONInventors: Masato Nakatake, Yoshiaki Utsugi, Shinji Matsushita, Tsukasa Sato, Toshi Ishida, Hajime Terasaki
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Publication number: 20190193195Abstract: The present invention is intended is to improve the corrosion resistance of an overlay used in a nuclear power plant, and to reduce dissolution of cobalt from an overlay. The corrosion and wear resistant overlay is formed along a surface of a base by laser lamination modeling, and is configured from a plurality of metal layers of a Co-base alloy. The thickness of carbide eutectics that precipitate in the metal layers is the largest in the metal layer closest to the base, and is gradually smaller in the metal layers farther away from the base. The intensity of the laser beam applied to form layers by laser lamination modeling is adjusted so that the carbide eutectics that precipitate in at least the outermost metal layer have a controlled size of 10 ?m or less.Type: ApplicationFiled: December 21, 2018Publication date: June 27, 2019Inventors: Sei HIRANO, Yoshihisa KIYOTOKI, Hajime MIYATA, Hirotsugu KAWANAKA, Shinji MATSUSHITA, Hiroshi SHIRATORI
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Publication number: 20180056994Abstract: A vehicle front-wheel turning control apparatus includes a drive force transmission path, a braking force controller, a detector, and a front-wheel turning controller. The detector detects one of occurred contact of the vehicle with respect to a forward object at an occurred contact position and unavoidable contact thereof at an unavoidable contact position. The front-wheel turning controller turns one, of the left and right front wheels, to which the drive force is transmitted, by causing the braking force controller to apply the braking force to the one of the left and right front wheels, on a basis of a state of the drive force transmitted to each of the left and right front wheels and one of the occurred and unavoidable contact positions, when the one of the occurred contact and the unavoidable contact is detected by the detector.Type: ApplicationFiled: June 23, 2017Publication date: March 1, 2018Applicant: SUBARU CORPORATIONInventors: Masato NAKATAKE, Yoshiaki UTSUGI, Shinji MATSUSHITA, Tsukasa SATO, Toshi ISHIDA, Hajime TERASAKI
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Patent number: 8234044Abstract: A steering control section has a first steering angle correction amount calculating section, a second steering angle correction amount calculating section, and a motor rotational angle calculating section. The first correction amount calculating section calculates a first correction amount based on a vehicle speed and an actual steering wheel angle. The second correction amount calculating section calculates a second correction amount through multiplying a control gain corresponding to the vehicle speed with a value calculated by low-pass filtering a differential value of steering wheel angle. The motor rotational angle calculating section calculates a motor rotational angle corresponding to the value adding the first and second steering angle correction amount, and outputs it to a motor driving section so as to drive an electric motor for correcting the steering angle. Thereby, an unstable vehicle behavior due to a resonance of a yaw motion caused in the steering operation can be suppressed.Type: GrantFiled: March 21, 2011Date of Patent: July 31, 2012Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Koji Matsuno, Satoru Akiyama, Shinji Matsushita, Shiro Ezoe, Masaru Kogure, Hajime Oyama
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Patent number: 8009380Abstract: A disk drive. The disk drive includes a disk configured to store data, a slider configured to fly in proximity to the disk, and a magnetic-recording head on the slider configured to access the disk. The disk drive also includes a moving mechanism configured to support and to move the head-slider, an adjustment portion configured to adjust clearance between the magnetic-recording head and the disk, and a controller configured to control the adjustment portion to control the clearance. The controller is configured to perform clearance control in a first mode in an operation selected from the group consisting of reading user data and writing user data according to a change in fly height of the slider after a load operation, and subsequently is configured to perform clearance control in a second mode in an operation selected from the group consisting of reading user data and writing user data.Type: GrantFiled: November 20, 2009Date of Patent: August 30, 2011Assignee: Hitachi Global Storage Technologies, Netherlands, B.V.Inventors: Shinji Matsushita, Kenichi Kuramoto, Kenji Kuroki, Takahiro Nishioka, Masayuki Ishikawa
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Patent number: 7995302Abstract: Embodiments of the present invention improve the safety against a fall of a disk drive device. In one embodiment, when an HDD has recognized detection result data of a fall sensor to indicate a fall, the HDD unloads a head slider from above a disk to a stand-by position. The HDD checks whether or not the detection result data of the fall sensor indicates a fall on the occasion of a seek start. If the data indicates a fall, the controller unloads an actuator. The HDD issues a seek fake error on the occasion of a seek completion. On the occasion of a re-seek start in the error recovery process, the HDD conducts a fall check referring to the detection result data.Type: GrantFiled: April 23, 2009Date of Patent: August 9, 2011Assignee: Hitachi Global Storage Technologies, Netherlands B.V.Inventors: Sayaka Nojiri, Shinji Matsushita, Naoya Tsurusaki, Hirofumi Saitoh
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Publication number: 20110172883Abstract: A steering control section has a first steering angle correction amount calculating section, a second steering angle correction amount calculating section, and a motor rotational angle calculating section. The first correction amount calculating section calculates a first correction amount based on a vehicle speed and an actual steering wheel angle. The second correction amount calculating section calculates a second correction amount through multiplying a control gain corresponding to the vehicle speed with a value calculated by low-pass filtering a differential value of steering wheel angle. The motor rotational angle calculating section calculates a motor rotational angle corresponding to the value adding the first and second steering angle correction amount, and outputs it to a motor driving section so as to drive an electric motor for correcting the steering angle. Thereby, an unstable vehicle behavior due to a resonance of a yaw motion caused in the steering operation can be suppressed.Type: ApplicationFiled: March 21, 2011Publication date: July 14, 2011Applicant: Fuji Jukogyo Kabushiki KaishaInventors: Koji MATSUNO, Satoru AKIYAMA, Shinji MATSUSHITA, Shiro EZOE, Masaru KOGURE, Hajime OYAMA
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Patent number: 7931113Abstract: A steering control section has a first steering angle correction amount calculating section, a second steering angle correction amount calculating section, and a motor rotational angle calculating section. The first correction amount calculating section calculates a first correction amount based on a vehicle speed and an actual steering wheel angle. The second correction amount calculating section calculates a second correction amount through multiplying a control gain corresponding to the vehicle speed with a value calculated by low-pass filtering a differential value of steering wheel angle. The motor rotational angle calculating section calculates a motor rotational angle corresponding to the value adding the first and second steering angle correction amount, and outputs it to a motor driving section so as to drive an electric motor for correcting the steering angle. Thereby, an unstable vehicle behavior due to a resonance of a yaw motion caused in the steering operation can be suppressed.Type: GrantFiled: June 30, 2006Date of Patent: April 26, 2011Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Koji Matsuno, Satoru Akiyama, Shinji Matsushita, Shiro Ezoe, Masaru Kogure, Hajime Oyama
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Publication number: 20100128383Abstract: A disk drive. The disk drive includes a disk configured to store data, a slider configured to fly in proximity to the disk, and a magnetic-recording head on the slider configured to access the disk. The disk drive also includes a moving mechanism configured to support and to move the head-slider, an adjustment portion configured to adjust clearance between the magnetic-recording head and the disk, and a controller configured to control the adjustment portion to control the clearance. The controller is configured to perform clearance control in a first mode in an operation selected from the group consisting of reading user data and writing user data according to a change in fly height of the slider after a load operation, and subsequently is configured to perform clearance control in a second mode in an operation selected from the group consisting of reading user data and writing user data.Type: ApplicationFiled: November 20, 2009Publication date: May 27, 2010Inventors: Shinji MATSUSHITA, Kenichi Kuramoto, Kanji Kuroki, Takahiro Nishioka, Masayuki Ishikawa
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Patent number: 7624789Abstract: In a liquid cooling system, comprising: a heat-receiving jacket for receiving heat from a heat-generation body therein; a heat-radiator for radiating the heat therefrom, which is received within the heat-receiving jacket; and a tank for accumulating refrigerant therein, which is connected with the heat-receiving jacket and the heat-radiator through flow passages, thereby enclosing a refrigerant within the heat-receiving jacket, the heat-radiator and the tank, including the flow passages provided therebetween, and further comprising: a liquid transfer means for generating a circulation flow of the refrigerant enclosed therein, wherein the tank is built up on one side surface of a substrate having superior heat-conductivity and heat-resistance, defined between a flexible film or sheet having superior heat-conductivity and heat-resistance, and the heat-radiator having a heat-radiation flow passage on the other side surface thereof, defined between the flexible film or sheet having superior heat-conductivity andType: GrantFiled: December 29, 2004Date of Patent: December 1, 2009Assignee: Hitachi, Ltd.Inventors: Rintaro Minamitani, Shigeo Ohashi, Takashi Naganawa, Shinji Matsushita, Hironori Oikawa
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Publication number: 20090268334Abstract: Embodiments of the present invention improve the safety against a fall of a disk drive device. In one embodiment, when an HDD has recognized detection result data of a fall sensor to indicate a fall, the HDD unloads a head slider from above a disk to a stand-by position. The HDD checks whether or not the detection result data of the fall sensor indicates a fall on the occasion of a seek start. If the data indicates a fall, the controller unloads an actuator. The HDD issues a seek fake error on the occasion of a seek completion. On the occasion of a re-seek start in the error recovery process, the HDD conducts a fall check referring to the detection result data.Type: ApplicationFiled: April 23, 2009Publication date: October 29, 2009Inventors: Sayaka Nojiri, Shinji Matsushita, Naoya Tsurusaki, Hirofumi Saitoh
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Patent number: 7375917Abstract: When an idle seek operation of a magnetic disk drive is executed under a velocity control utilizing a back electromotive force of a VCM actuator, the accuracy of the velocity control is deteriorated due to temperature variation of the VCM. To eliminate this disadvantage, a calibration of the velocity control is executed by using control information, such as a track number read from the magnetic disk medium. After the velocity control has been executed for an appointed period, by detecting the back electromotive force from the VCM actuator, an MR sense current and a power of a read write LSI are turned on for a time, positioning information on the magnetic disk medium is read out, parameters to be used for the velocity control are calibrated, and thus a stability of the control can be obtained.Type: GrantFiled: March 2, 2000Date of Patent: May 20, 2008Assignee: Hitachi, Ltd.Inventors: Yoshikatsu Fujii, Tsuyoshi Arai, Toshiyuki Kikuta, Takao Horiguchi, Shinji Matsushita
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Patent number: 7318322Abstract: A rack-mount server system of a liquid cooling system, in which a heat-generating component such as a CPU is cooled by a coolant has a plurality of server modules with heat-generating components which are cooled by the circulating coolant. The server modules are connected in parallel to a circulation coolant path through which the coolant to cool the server modules is circulated. In the middle of the coolant circulation path is a cooling unit that cools the coolant by radiating its heat to the outside air. Furthermore, a bypass route parallel to the server modules and going around the server modules is provided in the coolant circulation path, and the circulation quantity of the coolant is controlled in the bypass route. Alternatively, the flow quantity of the coolant is controlled in each of the server modules.Type: GrantFiled: February 12, 2004Date of Patent: January 15, 2008Assignee: Hitachi, Ltd.Inventors: Shigemi Ota, Shinji Matsushita
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Patent number: 7296618Abstract: A liquid cooling system is disclosed for use in an electronic apparatus. The system is constructed to be of a reduced size and thickness, thus allowing it to be used for cooling heat-generating devices such as semiconductor elements, while maintaining corrosion resistance. The system includes a pump, a heat-receiving jacket, and flow passages through which the cooling liquid is circulated. An ion exchange bag having a water-permeable bag is disposed within the liquid cooling system. The water-permeable bag further contains an ion exchange resin therein.Type: GrantFiled: March 4, 2004Date of Patent: November 20, 2007Assignee: Hitachi, Ltd.Inventors: Rintaro Minamitani, Shinji Matsushita, Shigeo Ohashi, Yoshihiro Kondo, Takashi Naganawa, Osamu Suzuki
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Patent number: 7242581Abstract: A liquid cooling system, enabling protection from corrosion due to liquid coolant for a long time-period (5–10 years) while cooling a heat-generation body effectively, comprises a pump 108, a heat-receiving jacket 107, a radiator for radiating heat into an outside, being made up with a heat-radiation pipe 201 and a heat-radiation plate 202, and further a tank 203 for accumulating the liquid coolant 209 within an inside thereof, wherein those are connected in a closed-loop, so as to circulating the cooling liquid therein, thereby cooling the heat-generation of a CPU 106, being a heat-generation element, effectively, through the heat-receiving jacket 107, and further a water-permeable bag 204 is disposed in a portion of flow path of the cooling liquid, which receives microcapsules 10 therein, each enclosing in an inside thereof anti-corrosion agent 20 for suppressing the corrosion due to the cooling liquid, including such as, a water, etc.Type: GrantFiled: December 29, 2004Date of Patent: July 10, 2007Assignee: Hitachi, Ltd.Inventors: Rintaro Minamitani, Shinji Matsushita
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Publication number: 20070039775Abstract: A steering control section has a first steering angle correction amount calculating section, a second steering angle correction amount calculating section, and a motor rotational angle calculating section. The first correction amount calculating section calculates a first correction amount based on a vehicle speed and an actual steering wheel angle. The second correction amount calculating section calculates a second correction amount through multiplying a control gain corresponding to the vehicle speed with a value calculated by low-pass filtering a differential value of steering wheel angle. The motor rotational angle calculating section calculates a motor rotational angle corresponding to the value adding the first and second steering angle correction amount, and outputs it to a motor driving section so as to drive an electric motor for correcting the steering angle. Thereby, an unstable vehicle behavior due to a resonance of a yaw motion caused in the steering operation can be suppressed.Type: ApplicationFiled: June 30, 2006Publication date: February 22, 2007Inventors: Koji Matsuno, Satoru Akiyama, Shinji Matsushita, Shiro Ezoe, Masaru Kogure, Hajime Oyama