Patents by Inventor Akira Yasue
Akira Yasue 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: 11472082Abstract: The present invention addresses the problem of providing a molding method capable of molding a molded article having excellent strength and reducing manufacturing costs by shortening a molding cycle when obtaining a molded article from a fiber-reinforced thermoplastic resin by compression molding. The present invention relates to a molding method which obtains a fiber-reinforced thermoplastic resin by kneading a thermoplastic resin and a reinforcing fiber (14), and a molded article from the fiber-reinforced thermoplastic resin by compression molding.Type: GrantFiled: September 21, 2018Date of Patent: October 18, 2022Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Akira Yasue, Hideki Chiba, Daisuke Kunihiro, Shoso Nishida, Kazuya Tsuji, Yasufumi Fujita, Kazuki Fujita
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KNEADING METHOD FOR FIBER-REINFORCED THERMOPLASTIC RESIN, PLASTICIZING DEVICE, AND EXTRUDING MACHINE
Publication number: 20210197420Abstract: The present invention provides a kneading method for a fiber-reinforced thermoplastic resin with which dispersibility of reinforcement fibers is enhanced and sufficient reinforcement fibers having a proper fiber length remain, and a fiber-reinforced thermoplastic resin plasticizing device and an extruding machine for carrying out the method. The kneading method comprises supplying a thermoplastic resin and reinforcement fibers into a cylinder of a plasticizing device, and rotating a screw to obtain a fiber-reinforced thermoplastic resin, wherein the size of a clearance between the bore of the cylinder and the screw is made different between an upstream side in the vicinity of a reinforcement fiber loading port and a downstream side, so that the clearance becomes larger from the vicinity of the reinforcement fiber loading port toward the downstream side compared with the upstream side.Type: ApplicationFiled: September 26, 2018Publication date: July 1, 2021Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Akira YASUE, Hideki CHIBA, Daisuke KUNIHIRO, Shose NISHIDA, Kazuya TSUJI, Yasufumi FUJITA, Kazuki FUJITA, Yukihiro SUMIHIRO -
Patent number: 10850438Abstract: [Problem] To provide an injection apparatus including a flow path switching mechanism that is simple in construction and low in cost. [Solution] An injection apparatus (1) includes a plasticization device (2) for melting resin, a first and second plunger injection devices (4, 5) for measuring an amount of resin and injecting the resin, an injecting portion (8), and a flow path switching block (7) that connects the plasticization device, the first and second plunger injection devices and the injecting portion together. A first to fourth connecting flow paths (23a, 23b) and a flow path switching valve (21) are provided in the flow path switching block (7). The plasticization device (2), the first plunger injection device (4), the injecting portion (8) and the second plunger injection device (5) are connected to the first to fourth connecting flow paths (23a, 23b), respectively.Type: GrantFiled: February 1, 2017Date of Patent: December 1, 2020Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Akira Yasue, Masahiko Taketani, Kazuya Tsuji, Shigeki Inoue, Shoso Nishida, Daigo Saga, Takashi Harada
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Publication number: 20200298457Abstract: The present invention addresses the problem of providing a molding method capable of molding a molded article having excellent strength and reducing manufacturing costs by shortening a molding cycle when obtaining a molded article from a fiber-reinforced thermoplastic resin by compression molding. The present invention relates to a molding method which obtains a fiber-reinforced thermoplastic resin by kneading a thermoplastic resin and a reinforcing fiber (14), and a molded article from the fiber-reinforced thermoplastic resin by compression molding.Type: ApplicationFiled: September 21, 2018Publication date: September 24, 2020Applicant: c/o THE JAPAN STREET WORKS, LTD.Inventors: Akira YASUE, Hideki CHIBA, Daisuke KUNIHIRO, Shoso NISHIDA, Kazuya TSUJI, Yasufumi FUJITA, Kazuki FUJITA
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Patent number: 10697114Abstract: The present invention provides a fiber-reinforced resin intermediate material, including not only a thermoplastic resin but also a thermosetting resin, in which defects such as voids are difficult to be generated and which is excellent in shaping ability; and a method for manufacturing the same. The fiber-reinforced resin intermediate material according to the present invention is a fiber-reinforced resin intermediate material formed by attaching a resin to an outer surface part of a reinforcing fiber substrate formed of reinforcing fibers subjected to opening and heating the resin to a temperature equal to or higher than the melting point of the resin to impregnate the reinforcing fiber substrate with the resin, wherein the reinforcing fiber substrate has void space that is opened on an outer surface thereof and the resin is in a semi-impregnated state.Type: GrantFiled: June 4, 2019Date of Patent: June 30, 2020Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Akio Ono, Akira Yasue
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Publication number: 20190284755Abstract: The present invention provides a fiber-reinforced resin intermediate material, including not only a thermoplastic resin but also a thermosetting resin, in which defects such as voids are difficult to be generated and which is excellent in shaping ability; and a method for manufacturing the same. The fiber-reinforced resin intermediate material according to the present invention is a fiber-reinforced resin intermediate material formed by attaching a resin to an outer surface part of a reinforcing fiber substrate formed of reinforcing fibers subjected to opening and heating the resin to a temperature equal to or higher than the melting point of the resin to impregnate the reinforcing fiber substrate with the resin, wherein the reinforcing fiber substrate has void space that is opened on an outer surface thereof and the resin is in a semi-impregnated state.Type: ApplicationFiled: June 4, 2019Publication date: September 19, 2019Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Akio Ono, Akira Yasue
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Patent number: 10351994Abstract: The present invention provides a fiber-reinforced resin intermediate material, including not only a thermoplastic resin but also a thermosetting resin, in which defects such as voids are difficult to be generated and which is excellent in shaping ability; and a method for manufacturing the same. The fiber-reinforced resin intermediate material according to the present invention is a fiber-reinforced resin intermediate material formed by attaching a resin to an outer surface part of a reinforcing fiber substrate formed of reinforcing fibers subjected to opening and heating the resin to a temperature equal to or higher than the melting point of the resin to impregnate the reinforcing fiber substrate with the resin, wherein the reinforcing fiber substrate has void space that is opened on an outer surface thereof and the resin is in a semi-impregnated state.Type: GrantFiled: October 16, 2015Date of Patent: July 16, 2019Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Akio Ono, Akira Yasue
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Publication number: 20190047195Abstract: [Problem] To provide an injection apparatus including a flow path switching mechanism that is simple in construction and low in cost. [Solution] An injection apparatus (1) includes a plasticization device (2) for melting resin, a first and second plunger injection devices (4, 5) for measuring an amount of resin and injecting the resin, an injecting portion (8), and a flow path switching block (7) that connects the plasticization device, the first and second plunger injection devices and the injecting portion together. A first to fourth connecting flow paths (23a, 23b) and a flow path switching valve (21) are provided in the flow path switching block (7). The plasticization device (2), the first plunger injection device (4), the injecting portion (8) and the second plunger injection device (5) are connected to the first to fourth connecting flow paths (23a, 23b), respectively.Type: ApplicationFiled: February 1, 2017Publication date: February 14, 2019Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Akira YASUE, Masahiko TAKETANI, Kazuya TSUJI, Shigeki INOUE, Shoso NISHIDA, Daigo SAGA, Takashi HARADA
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Publication number: 20170241074Abstract: The present invention provides a fiber-reinforced resin intermediate material, including not only a thermoplastic resin but also a thermosetting resin, in which defects such as voids are difficult to be generated and which is excellent in shaping ability; and a method for manufacturing the same. The fiber-reinforced resin intermediate material according to the present invention is a fiber-reinforced resin intermediate material formed by attaching a resin to an outer surface part of a reinforcing fiber substrate formed of reinforcing fibers subjected to opening and heating the resin to a temperature equal to or higher than the melting point of the resin to impregnate the reinforcing fiber substrate with the resin, wherein the reinforcing fiber substrate has void space that is opened on an outer surface thereof and the resin is in a semi-impregnated state.Type: ApplicationFiled: October 16, 2015Publication date: August 24, 2017Applicant: THE JAPAN STEEL WORKS, LTD.Inventors: Akio ONO, Akira YASUE
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Patent number: 5277543Abstract: A submerged motor pump is provided in a piping system or connected to a pressure vessel, and a pump and a motor are immersed in the fluid. A rotor rotatable together with a pump impeller is fixed to a rotor shaft. The rotor shaft is supported by a thrust bearing. A cover is provided facing the end of the rotor shaft and carries an ultrasonic sensor on its outside surface. The ultrasonic sensor projects ultrasonic wave toward the end of the rotor shaft and detects the echo therefrom so as to measure the distance between the end of the rotor shaft and the inside surface of the cover, i.e. the surface thereof in contact with the fluid. The inside surface of the cover includes a concave spherical surface which faces the end of the rotor shaft and substantially converges the main beam of the ultrasonic wave to the end of the rotor shaft, preventing reduction of sound pressure of the ultrasonic wave.Type: GrantFiled: July 27, 1992Date of Patent: January 11, 1994Assignees: Doryokuro Kakunenryo Kathatsu Jigyodan, Fuji Electric Co., Ltd., Sumitomo Heavy Industries, Ltd.Inventors: Shotaro Noguchi, Shikou Kiyota, Michio Nakagawa, Akira Yasue, Akio Uehara
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Patent number: 4410063Abstract: A loudspeaker system with a plurality of direct loudspeakers mounted on an enclosure front for radiating in a forward direction and at least one compensation loudspeaker for each loudspeaker. The compensation speakers are mounted to direct sounds rearwardly so that both the sound pressure as a result of the direct sounds and the sound pressure as a sum of the direct and indirect sounds are substantially independent of frequency.Type: GrantFiled: November 19, 1981Date of Patent: October 18, 1983Assignee: Onkyo Kabushiki KaishaInventors: Akira Yasue, Toshiji Kato, Yozo Takahashi