Patents Assigned to Kurimoto, Ltd.
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Publication number: 20240151291Abstract: A magneto rheological fluid device includes a first member 101 and a second member 102 that rotate relative to each other with a layer of a magneto rheological fluid 200 having a predetermined thickness interposed therebetween, and a magnetic field generator 128. The magnetic field generator 128 forms a magnetic path so as to cross the layer of the magneto rheological fluid 200 interposed between the first member 101 and the second member 102 in a thickness direction. The magneto rheological fluid 200 contains fluorine oil as a dispersion medium.Type: ApplicationFiled: March 24, 2022Publication date: May 9, 2024Applicant: KURIMOTO, LTD.Inventors: Hitoshi TSUJI, Yuya UESHIMA, Tomohiro KOGE, Takashi SUEHIRO
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Patent number: 11959155Abstract: A magnesium alloy which has excellent tensile strength and elongation at a room temperature, as well as an excellent heat resistance represented by creep resistance is obtained. The magnesium alloy is produced which comprises 3.0% by mass or more and less than 6.0% by mass of Al, 0.10% by mass or more and 0.60% by mass or less of Mn, more than 0.50% by mass and less than 2.0% by mass of Ca, and more than 0.10% by mass and less than 0.40% by mass of Si, and has a balance composed of Mg and unavoidable impurities.Type: GrantFiled: March 6, 2020Date of Patent: April 16, 2024Assignee: Kurimoto, LTD.Inventors: Keisuke Yamori, Takeaki Miyamoto, Yasuhide Kanatsu, Akihiko Koshi, Masaaki Yamamoto, Jinsun Liao
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Patent number: 11532447Abstract: An input device includes a first part and a second part configured to move relative to each other according to an input operation, a magnetic viscous fluid whose viscosity changes according to a magnetic field, and a magnetic-field generator that generates the magnetic field applied to the magnetic viscous fluid. The second part includes a first surface and a second surface that are arranged in a direction orthogonal to a direction of relative movement between the first part and the second part. Gaps are formed between the first surface and the first part and between the second surface and the first part, and the magnetic viscous fluid is present in at least a part of the gaps.Type: GrantFiled: April 13, 2020Date of Patent: December 20, 2022Assignee: KURIMOTO, LTD.Inventors: Hiroshi Wakuda, Kazunari Takahashi, Atsushi Goto, Ryuichiro Yasuhara
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Patent number: 11383459Abstract: A fiber-reinforced resin hollow body includes an axial-direction fiber layer containing reinforcing fibers aligned parallel to an axial direction of the hollow body, and a non-axial-direction fiber layer provided on top of at least one of an internal and an external side of the axial-direction fiber layer, and containing reinforcing fibers oriented in a direction different from the alignment direction of the axial-direction fiber layer. The non-axial-direction fiber layer includes one or more peripheral-direction fiber layers containing reinforcing fibers aligned parallel to a peripheral direction of the hollow body, and one or more non-aligned fiber layers containing reinforcing fibers not aligned in a specific direction.Type: GrantFiled: March 29, 2017Date of Patent: July 12, 2022Assignees: KURIMOTO, LTD., MAZDA MOTOR CORPORATIONInventors: Takeshi Kitagawa, Masaya Hazama, Toshiki Okauji, Makoto Takeda, Jun Watanabe, Takashi Tabakoya, Shin Matsumura, Yoshiyasu Kajimoto, Kazuhisa To
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Patent number: 11322324Abstract: An input device includes a first part and a second part configured to move relative to each other according to an input operation, a magnetic viscous fluid whose viscosity changes according to a magnetic field, and a magnetic-field generator that generates the magnetic field applied to the magnetic viscous fluid. The second part includes a first surface and a second surface that are arranged in a direction orthogonal to a direction of relative movement between the first part and the second part. Gaps are formed between the first surface and the first part and between the second surface and the first part, and the magnetic viscous fluid is present in at least a part of the gaps.Type: GrantFiled: April 13, 2020Date of Patent: May 3, 2022Assignee: KURIMOTO, LTD.Inventors: Hiroshi Wakuda, Kazunari Takahashi, Atsushi Goto, Ryuichiro Yasuhara
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Patent number: 11207865Abstract: A fiber-reinforced resin hollow body includes an axial-direction fiber layer containing reinforcing fibers aligned parallel to an axial direction of the hollow body, and a non-axial-direction fiber layer provided on top of at least one of an internal and an external side of the axial-direction fiber layer, and containing reinforcing fibers oriented in a direction different from a direction in which the reinforcing fibers contained in the axial-direction fiber layer are aligned. The non-axial-direction fiber layer has end portions in a peripheral direction of the hollow body, the end portions overlapping each other.Type: GrantFiled: March 29, 2017Date of Patent: December 28, 2021Assignees: KURIMOTO, LTD., MAZDA MOTOR CORPORATIONInventors: Takeshi Kitagawa, Masaya Hazama, Toshiki Okauji, Makoto Takeda, Jun Watanabe, Takashi Tabakoya, Shin Matsumura, Yoshiyasu Kajimoto, Kazuhisa To
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Patent number: 11143312Abstract: An eccentric rotary valve includes valve elements arranged symmetrically around the valve shaft axis, and valve element valve seats and valve body valve seats which are elliptic conical surfaces made of metal. Each valve element has an elliptic spherical surface, an elliptic conical surface, or a completely spherical surface to which one of the valve element valve seats is continuously and steplessly connected. The axes of the valve seats are offset from the valve shaft axis in the valve closing direction such that, when the valve shaft is rotated in the valve opening direction, the valve element valve seats instantly separate from the valve body valve seats. Flow regulating plates are disposed in the valve body between the valve elements to ensure smooth flow of fluid. Ribs are disposed on opposite sides of the valve shaft and forwardly, in the valve opening direction, of the respective valve elements.Type: GrantFiled: February 28, 2020Date of Patent: October 12, 2021Assignee: Kurimoto, Ltd.Inventors: Takashi Kuwahara, Hidemitsu Mamoto
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Patent number: 10961608Abstract: A magnesium alloy contains, in atomic percent: 5.7 at. % or more and 8.6 at. % or less of Al; 0.6 at. % or more and 1.7 at. % or less of Ca; 0.05 at. % or more and 0.27 at. % or less of Mn; and 0.02 at. % or more and 0.36 at. % or less of a rare earth element (RE); and any one of 0.1 at. % or more and 0.3 at. % or less of Zn and 0.02 at. % or more and 0.18 at. % or less of Sn, wherein the contents in atomic percent satisfy the condition of the inequality of the following Formula (1), and the balance is Mg and inevitable impurities. (Ca+RE)/Al>0.Type: GrantFiled: March 30, 2016Date of Patent: March 30, 2021Assignee: KURIMOTO, LTD.Inventors: Yuya Iwamoto, Yasuhide Kanatsu, Akihiko Koshi, Jinsun Liao
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Patent number: 10890977Abstract: A haptic feedback device for virtual objects includes a head-mounted display unit, an HMD control unit, a haptic feedback unit, and a haptic information DB for storing haptic information in association with each type of virtual object. The HMD control unit includes a display controller that causes a virtual object and a user focus to appear on a display, and a haptic information transmitter that reads, when the user focus is placed over a selectable virtual object, haptic information associated with the type of the selected virtual object from the haptic information DB, and transmits the haptic information to the haptic feedback unit. The haptic feedback unit includes a movable portion movable with a user operation, a movement resistance generator that applies movement resistance to the movable portion, and a power feed controller (movement resistance controller).Type: GrantFiled: July 19, 2019Date of Patent: January 12, 2021Assignee: Kurimoto, Ltd.Inventors: Yuya Ueshima, Keisuke Kinoi, Shuichi Akaiwa, Hitoshi Tsuji, Katsutoshi Hata
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Patent number: 10550453Abstract: An improved Al—Mn-based magnesium alloy is provided which shows excellent heat resistance, creep resistance, and mechanical strength in a balanced manner. The magnesium alloy contains 4.0% by mass or more and 8.50% by mass or less of Al; 0.1% by mass or more and 0.6% by mass or less of Mn; 1.5% by mass or more and 6.0% by mass or less of Ca; and 0.1% by mass or more and 0.5% by mass or less of Sn; the balance being Mg and unavoidable impurities.Type: GrantFiled: February 24, 2016Date of Patent: February 4, 2020Assignee: KURIMOTO, LTD.Inventors: Yuya Iwamoto, Yasuhide Kanatsu, Akihiko Koshi, Jinsun Liao
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Publication number: 20200009682Abstract: A first metal sheet is placed on a backing metal plate, and an end portion of a second metal sheet is placed on top of an end portion of the first metal sheet such that the ends of the end portions are spaced apart from each other by a predetermined distance in side view. The end portions of the first and second metal sheets are joined together by downwardly pressing a rotating rotary tool onto the end portion of the second metal sheet placed on top of the end portion of the first metal sheet and by utilizing frictional heat and pressurizing force generated between the rotating tool and the first and second metal sheets.Type: ApplicationFiled: September 17, 2019Publication date: January 9, 2020Applicant: KURIMOTO, LTD.Inventors: Yefei GAO, Akihiko KOSHI, Jinsun LIAO
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Publication number: 20190287703Abstract: Disclosed is a magnetorheological fluid including a fine particle mixture and a dispersion medium. The fine particle mixture includes first particles, second particles, and third particles. The first particles are magnetic particles having an average particle size greater than or equal to 1 ?m and less than or equal to 30 ?m. The second particles are magnetic particles having an average particle size greater than or equal to 100 nm and less than or equal to 300 nm. The third particles are particles having an average particle size greater than or equal to 10 nm and less than or equal to 50 nm. A proportion of the first particles in the fine particle mixture is greater than or equal to 60 mass % and less than 99 mass %, the remainder being the second particles and the third particles.Type: ApplicationFiled: July 21, 2016Publication date: September 19, 2019Applicant: KURIMOTO, LTD.Inventors: Yuya UESHIMA, Shuichi AKAIWA
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Publication number: 20190143612Abstract: A fiber-reinforced resin hollow body includes an axial-direction fiber layer containing reinforcing fibers aligned parallel to an axial direction of the hollow body, and a non-axial-direction fiber layer provided on top of at least one of an internal and an external side of the axial-direction fiber layer, and containing reinforcing fibers oriented in a direction different from the alignment direction of the axial-direction fiber layer. The non-axial-direction fiber layer includes one or more peripheral-direction fiber layers containing reinforcing fibers aligned parallel to a peripheral direction of the hollow body, and one or more non-aligned fiber layers containing reinforcing fibers not aligned in a specific direction.Type: ApplicationFiled: March 29, 2017Publication date: May 16, 2019Applicants: KURIMOTO, LTD., MAZDA MOTOR CORPORATIONInventors: Takeshi KITAGAWA, Masaya HAZAMA, Toshiki OKAUJI, Makoto TAKEDA, Jun WATANABE, Takashi TABAKOYA, Shin MATSUMURA, Yoshiyasu KAJIMOTO, Kazuhisa TO
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Publication number: 20190105870Abstract: A fiber-reinforced resin hollow body includes an axial-direction fiber layer containing reinforcing fibers aligned parallel to an axial direction of the hollow body, and a non-axial-direction fiber layer provided on top of at least one of an internal and an external side of the axial-direction fiber layer, and containing reinforcing fibers oriented in a direction different from a direction in which the reinforcing fibers contained in the axial-direction fiber layer are aligned. The non-axial-direction fiber layer has end portions in a peripheral direction of the hollow body, the end portions overlapping each other.Type: ApplicationFiled: March 29, 2017Publication date: April 11, 2019Applicants: KURIMOTO, LTD., MAZDA MOTOR CORPORATIONInventors: Takeshi KITAGAWA, Masaya HAZAMA, Toshiki OKAUJI, Makoto TAKEDA, Jun WATANABE, Takashi TABAKOYA, Shin MATSUMURA, Yoshiyasu KAJIMOTO, Kazuhisa TO
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Patent number: 9982327Abstract: A brass alloy is provided having good mechanical properties and castability, and excellent general-purpose properties, while its dezincification corrosion is inhibited. The brass alloy contains 0.4% by mass or more and 3.2% by mass or less of Al; 0.001% by mass or more and 0.3% by mass or less of P; 0.1% by mass or more and 4.5% by mass or less of Bi; 0% by mass or more and 5.5% by mass or less of Ni; 0% by mass or more and 0.5% by mass or less of Mn, Fe, Pb, Sn, Si, Mg, and Cd, respectively; and Zn; the balance being Cu and a trace element or elements. The zinc equivalent (Zneq) calculated from the content of Zn and other elements, and the content of Al (% by mass) satisfy the following Equations (1) and (2): Zneq+1.7×Al?35.0??(1) Zneq?0.45×Al?37.0??(2).Type: GrantFiled: February 21, 2013Date of Patent: May 29, 2018Assignee: KURIMOTO, LTD.Inventors: Hiroshi Yamada, Masaaki Yamamoto
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Patent number: 9963765Abstract: A copper alloy for use in water works has not only a reduced lead content and the lowest possible Ni content, but also a reduced Bi content, and still exhibits suitable properties. The copper alloy includes: less than 0.5% by mass of Ni; 0.2% by mass or more and 0.9% by mass or less of Bi; 12.0% by mass or more and 20.0% by mass or less of Zn; 1.5% by mass or more and 4.5% by mass or less of Sn; and 0.005% by mass or more and 0.1% by mass or less of P; wherein the total content of Zn and Sn is 21.5% by mass or less, and the balance is a trace element(s) and Cu.Type: GrantFiled: December 3, 2013Date of Patent: May 8, 2018Assignee: KURIMOTO, LTD.Inventors: Masaaki Yamamoto, Hiroshi Yamada, Takeaki Miyamoto, Syohei Matsuba
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Publication number: 20180016663Abstract: An improved Al—Mn-based magnesium alloy is provided which shows excellent heat resistance, creep resistance, and mechanical strength in a balanced manner. The magnesium alloy contains 4.0% by mass or more and 8.50% by mass or less of Al; 0.1% by mass or more and 0.6% by mass or less of Mn; 1.5% by mass or more and 6.0% by mass or less of Ca; and 0.1% by mass or more and 0.5% by mass or less of Sn; the balance being Mg and unavoidable impurities.Type: ApplicationFiled: February 24, 2016Publication date: January 18, 2018Applicant: KURIMOTO, LTD.Inventors: Yuya IWAMOTO, Yasuhide KANATSU, Akihiko KOSHI, Jinsun LIAO
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Patent number: 9829909Abstract: Inside a stick base, a variable resistor and a magnet brake are attached to a turnable first bridge. An A/D converter adapted to convert an analog value corresponding to a turning angle, which is obtained from the variable resistor, to a digital value, and a controller adapted to drive the magnet brake when a signal from the A/D converter is given and coincides with a predetermined value are provided. On the basis of data retained in a memory, current is applied to a coil of the magnet brake. Doing so makes it possible to electrically change operational feeling when turning a stick.Type: GrantFiled: October 30, 2014Date of Patent: November 28, 2017Assignee: KURIMOTO, LTD.Inventors: Akihiko Yamaguchi, Shuichi Akaiwa
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Publication number: 20170121791Abstract: An object of the present invention is to provide a brass alloy, in which the content of Bi is reduced to secure a good recyclability while maintaining the dezincification corrosion resistance required for a member for water works, and which is capable of exhibiting an erosion-corrosion resistance and excellent mechanical properties to be used as a member for water works. This brass alloy contains: 24% by mass or more and 34% by mass or less of Zn; 0.5% by mass or more and 1.7% by mass or less of Sn; 0.4% by mass or more and 1.8% by mass or less of Al; 0.005% by mass or more and 0.2% by mass or less of P; and 0.01% by mass or more and 0.25% by mass or less of Pb; with the balance being copper and an unavoidable impurity(ies).Type: ApplicationFiled: March 6, 2015Publication date: May 4, 2017Applicant: KURIMOTO, LTD.Inventors: Hiroshi YAMADA, Masaaki YAMAMOTO, Takeaki MIYAMOTO, Syohei MATSUBA
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Patent number: 9518314Abstract: A production method of an extrusion billet includes a step of preparing a plate or lump starting material comprising a magnesium alloy, a step of performing a plastic deformation process at a rolling reduction of 70% or more to the starting material at a temperature of 250° C. or lower to introduce a strain without generating dynamic recrystallization, a step of producing powder by granulating the material after the plastic deformation process, and a step of producing a powder billet by compressing the powder.Type: GrantFiled: June 19, 2008Date of Patent: December 13, 2016Assignees: KURIMOTO LTD.Inventors: Katsuyoshi Kondoh, Makoto Hotta, Jinsun Liao, Kantaro Kaneko, Norio Fujii, Hirohito Kametani, Akihiko Koshi