Patents by Inventor Shinya Nagao
Shinya Nagao 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: 10094238Abstract: The present invention provides a high quality material for ring rolling. The material includes radially outer and inner peripheral surfaces. In the material, a center of gravity on a half section is located so as to be closer to the outer peripheral surface in contact with a main roll than a center of the half section in a thickness direction, a shape of the half section includes a height reducing portion having a height from a center line dividing the half section into halves in a height direction, this height is gradually reduced toward the inner peripheral surface in contact with a mandrel roll, and the shape is formed in a substantially linear symmetry such that the center line is a symmetric axis. A height of the inner peripheral surface is from 20% to 50% of a maximum height of the material.Type: GrantFiled: March 18, 2014Date of Patent: October 9, 2018Assignee: Hitachi Metals, Ltd.Inventors: Tetsuya Yagami, Toshiya Teramae, Etsuo Fujita, Shinya Nagao, Remi Mukouse, Naoyuki Iwasa, Tsuyoshi Fukui, Chuya Aoki
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Patent number: 9778140Abstract: An engine testing apparatus is provided with a memory portion for storing a control command value obtained when the rotation speed of a dynamometer is changed by the control command value in accordance with the change of the engine rotation speed in a real vehicle in a period in which the engine behavior in a real vehicle is reproduced without connecting the dynamometer to an engine under test. The engine testing apparatus is provided with an output portion that supplies the control command value stored in the memory portion to the dynamometer with reference to an engine output signal showing the start of the reproducing period.Type: GrantFiled: March 13, 2012Date of Patent: October 3, 2017Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, MEIDENSHA CORPORATIONInventors: Yasuaki Suzuki, Takuya Kusakabe, Masato Hayasaka, Yoshinao Sato, Nobuhiko Asakura, Sou Shimizu, Yoshimasa Sawada, Takao Akiyama, Shinya Nagao, Yoshiharu Kido
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Patent number: 9719369Abstract: A manufacturing method provides a high-quality material for ring rolling. The manufacturing method of the material for ring rolling includes a step of heating a disk-shaped material for hot forging to a hot working temperature, a step of arranging the material for hot forging onto a lower die having a convex portion with a truncated conical shape, a step of forming a thin portion by pressing a center portion of the material for hot forging by using an upper die having a convex portion with a truncated conical shape, and a step of manufacturing a material for ring rolling by removing the thin portion wherein a center of gravity on a half section of the material for ring rolling is located so as to be closer to an outer peripheral surface of the half section than a center of the half section in a thickness direction of the half section.Type: GrantFiled: March 18, 2014Date of Patent: August 1, 2017Assignee: HITACHI METALS, LTD.Inventors: Tetsuya Yagami, Toshiya Teramae, Etsuo Fujita, Shinya Nagao, Remi Mukouse, Naoyuki Iwasa, Tsuyoshi Fukui, Chuya Aoki
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Patent number: 9574250Abstract: Provided is a method for fabricating a stepped forged material that can realize a uniform microscopic structure in both the large diameter flange portion and the small diameter shaft portion. This method for fabricating a stepped forged material comprises the following steps: a step for obtaining a primary forged material in which an austenite stainless steel billet is heated to 1000-1080° C., and, without any further heating, the material is forged by means of reciprocal forging into a round rod having along the entire length thereof a forging ratio of 1.5 or greater; a step for obtaining a secondary forged material, that forms the large diameter flange portion and the small diameter shaft portion, in which without reheating, the small diameter shaft portion is formed by means of reciprocal forging at a temperature where the surface temperature of the primary forged material never falls more than 200° C.Type: GrantFiled: April 24, 2012Date of Patent: February 21, 2017Assignee: HITACHI METALS, LTD.Inventors: Shinya Nagao, Etsuo Fujita
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Publication number: 20160281530Abstract: The present invention provides a high quality material for ring rolling. The material includes radially outer and inner peripheral surfaces. In the material, a center of gravity on a half section is located so as to be closer to the outer peripheral surface in contact with a main roll than a center of the half section in a thickness direction, a shape of the half section includes a height reducing portion having a height from a center line dividing the half section into halves in a height direction, this height is gradually reduced toward the inner peripheral surface in contact with a mandrel roll, and the shape is formed in a substantially linear symmetry such that the center line is a symmetric axis. A height of the inner peripheral surface is from 20% to 50% of a maximum height of the material.Type: ApplicationFiled: March 18, 2014Publication date: September 29, 2016Inventors: Tetsuya Yagami, Toshiya Teramae, Etsuo Fujita, Shinya Nagao, Remi Mukouse, Naoyuki Iwasa, Tsuyoshi Fukui, Chuya Aoki
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Publication number: 20160271681Abstract: A manufacturing method provides a high-quality material for ring rolling. The manufacturing method of the material for ring rolling includes a step of heating a disk-shaped material for hot forging to a hot working temperature, a step of arranging the material for hot forging onto a lower die having a convex portion with a truncated conical shape, a step of forming a thin portion by pressing a center portion of the material for hot forging by using an upper die having a convex portion with a truncated conical shape, and a step of manufacturing a material for ring rolling by removing the thin portion wherein a center of gravity on a half section of the material for ring rolling is located so as to be closer to an outer peripheral surface of the half section than a center of the half section in a thickness direction of the half section.Type: ApplicationFiled: March 18, 2014Publication date: September 22, 2016Inventors: Tetsuya Yagami, Toshiya Teramae, Etsuo Fujita, Shinya Nagao, Remi Mukouse, Naoyuki Iwasa, Tsuyoshi Fukui, Chuya Aoki
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Publication number: 20140041768Abstract: Provided is a method for fabricating a stepped forged material that can realize a uniform microscopic structure in both the large diameter flange portion and the small diameter shaft portion. This method for fabricating a stepped forged material comprises the following steps: a step for obtaining a primary forged material in which an austenite stainless steel billet is heated to 1000-1080° C., and, without any further heating, the material is forged by means of reciprocal forging into a round rod having along the entire length thereof a forging ratio of 1.5 or greater; a step for obtaining a secondary forged material, that forms the large diameter flange portion and the small diameter shaft portion, in which without reheating, the small diameter shaft portion is formed by means of reciprocal forging at a temperature where the surface temperature of the primary forged material never falls more than 200° C.Type: ApplicationFiled: April 24, 2012Publication date: February 13, 2014Applicant: HITACHI METALS, LTD.Inventors: Shinya Nagao, Etsuo Fujita
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Publication number: 20140019081Abstract: An engine testing apparatus is provided with a memory portion for storing a control command value obtained when the rotation speed of a dynamometer is changed by the control command value in accordance with the change of the engine rotation speed in a real vehicle in a period in which the engine behavior in a real vehicle is reproduced without connecting the dynamometer to an engine under test. The engine testing apparatus is provided with an output portion that supplies the control command value stored in the memory portion to the dynamometer with reference to an engine output signal showing the start of the reproducing period.Type: ApplicationFiled: March 13, 2012Publication date: January 16, 2014Applicants: MEIDENSHA CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuaki Suzuki, Takuya Kusakabe, Masato Hayasaka, Yoshinao Sato, Nobuhiko Asakura, Sou Shimizu, Yoshimasa Sawada, Takao Akiyama, Shinya Nagao, Yoshiharu Kido
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Publication number: 20100239444Abstract: A piezoelectric element that is capable of achieving a larger amount of displacement and in which migration between electrodes hardly occurs, is included in a piezoelectric pump. The piezoelectric pump includes a first excitation electrode opposed to a second excitation electrode via a first piezoelectric layer in a central area of a layered piezoelectric body, a third excitation electrode opposed to a fourth excitation electrode via a second piezoelectric layer and a third excitation electrode opposed to a fourth excitation electrode via the second piezoelectric layer in peripheral portions of the layered piezoelectric body.Type: ApplicationFiled: June 9, 2010Publication date: September 23, 2010Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Shinya NAGAO, Toshio NISHIMURA, Masanaga NISHIKAWA
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Publication number: 20100129610Abstract: Silicon in prismatic shape is produced by using a silicon wafer with (110) surface and sequentially carrying out an alignment configuration forming step for forming alignment configurations having surfaces that are along two (111) surfaces perpendicular to a substrate surface inside the silicon wafer, a primary anisotropic etching step for forming perpendicular walls having wall surfaces aligned to one of these (111) surfaces, and a secondary anisotropic etching step for forming silicon in the prismatic shape having wall surfaces aligned to the other of these (111) surfaces with respect to the perpendicular walls.Type: ApplicationFiled: May 14, 2007Publication date: May 27, 2010Applicant: NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITYInventors: Fumikazu Oohira, Gen Hashiguchi, Shinya Nagao