Patents Assigned to Kurimoto, Ltd.
  • Publication number: 20200009682
    Abstract: 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: Application
    Filed: September 17, 2019
    Publication date: January 9, 2020
    Applicant: KURIMOTO, LTD.
    Inventors: Yefei GAO, Akihiko KOSHI, Jinsun LIAO
  • Publication number: 20190287703
    Abstract: 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: Application
    Filed: July 21, 2016
    Publication date: September 19, 2019
    Applicant: KURIMOTO, LTD.
    Inventors: Yuya UESHIMA, Shuichi AKAIWA
  • Publication number: 20190143612
    Abstract: 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: Application
    Filed: March 29, 2017
    Publication date: May 16, 2019
    Applicants: KURIMOTO, LTD., MAZDA MOTOR CORPORATION
    Inventors: Takeshi KITAGAWA, Masaya HAZAMA, Toshiki OKAUJI, Makoto TAKEDA, Jun WATANABE, Takashi TABAKOYA, Shin MATSUMURA, Yoshiyasu KAJIMOTO, Kazuhisa TO
  • Publication number: 20190105870
    Abstract: 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: Application
    Filed: March 29, 2017
    Publication date: April 11, 2019
    Applicants: KURIMOTO, LTD., MAZDA MOTOR CORPORATION
    Inventors: Takeshi KITAGAWA, Masaya HAZAMA, Toshiki OKAUJI, Makoto TAKEDA, Jun WATANABE, Takashi TABAKOYA, Shin MATSUMURA, Yoshiyasu KAJIMOTO, Kazuhisa TO
  • Patent number: 9982327
    Abstract: 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: Grant
    Filed: February 21, 2013
    Date of Patent: May 29, 2018
    Assignee: KURIMOTO, LTD.
    Inventors: Hiroshi Yamada, Masaaki Yamamoto
  • Patent number: 9963765
    Abstract: 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: Grant
    Filed: December 3, 2013
    Date of Patent: May 8, 2018
    Assignee: KURIMOTO, LTD.
    Inventors: Masaaki Yamamoto, Hiroshi Yamada, Takeaki Miyamoto, Syohei Matsuba
  • Publication number: 20180016663
    Abstract: 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: Application
    Filed: February 24, 2016
    Publication date: January 18, 2018
    Applicant: KURIMOTO, LTD.
    Inventors: Yuya IWAMOTO, Yasuhide KANATSU, Akihiko KOSHI, Jinsun LIAO
  • Patent number: 9829909
    Abstract: 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: Grant
    Filed: October 30, 2014
    Date of Patent: November 28, 2017
    Assignee: KURIMOTO, LTD.
    Inventors: Akihiko Yamaguchi, Shuichi Akaiwa
  • Publication number: 20170121791
    Abstract: 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: Application
    Filed: March 6, 2015
    Publication date: May 4, 2017
    Applicant: KURIMOTO, LTD.
    Inventors: Hiroshi YAMADA, Masaaki YAMAMOTO, Takeaki MIYAMOTO, Syohei MATSUBA
  • Patent number: 9518314
    Abstract: 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: Grant
    Filed: June 19, 2008
    Date of Patent: December 13, 2016
    Assignees: KURIMOTO LTD.
    Inventors: Katsuyoshi Kondoh, Makoto Hotta, Jinsun Liao, Kantaro Kaneko, Norio Fujii, Hirohito Kametani, Akihiko Koshi
  • Patent number: 9427890
    Abstract: A kneader/stirrer includes two rotary shafts extending parallel to each other in the processing chamber, and first and second regular triangular impellers mounted to the respective rotary shafts. The first impellers are located at the same axial positions as the respective first impellers. The impellers are fixed to the respective rotary shafts at points offset from the centers of the respective impellers in a predetermined direction by a predetermined distance such that when the two rotary shafts rotate in the same direction at the same speed, each pair of first and second impellers are eccentrically pivoted, with one apex of one of the pair of impellers kept in contact with or in close proximity to the contour of the other impeller, thereby scraping off polycondensation resin (material to be processed) adhered to the other impeller.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: August 30, 2016
    Assignee: KURIMOTO, LTD.
    Inventors: Atsushi Fujii, Koji Yamasaki, Kazunori Fukumoto
  • Patent number: 9424969
    Abstract: A magneto-rheological fluid includes a magnetic particle mixture, and a dispersion medium for dispersing the magnetic particle mixture. The magnetic particle mixture contains the first magnetic particles and the second magnetic particles. The first magnetic particles have an average particle diameter of 1 ?m or more and 30 ?m or less. The second magnetic particles are particles of a soft magnetic material, and have an average particle diameter of 50 nm or more and 200 nm or less. A ratio of the second magnetic particles in the magnetic particle mixture is 10% by mass or more and 40% by mass or less.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: August 23, 2016
    Assignee: Kurimoto, Ltd.
    Inventors: Junichi Noma, Masami Nakano
  • Patent number: 9123462
    Abstract: A magneto-rheological fluid includes: a magnetic particle mixture; and a dispersion medium in which the magnetic particle mixture is dispersed. The magnetic particle mixture includes first magnetic particles and second magnetic particles. The first magnetic particles have an average particle size greater than or equal to 1 ?m and less than or equal to 50 ?m. The second magnetic particles have an average particle size greater than or equal to 20 nm and less than or equal to 200 nm, and have surfaces provided with a surface modified layer. A proportion of the second magnetic particles in the magnetic particle mixture is greater than or equal to 2 wt % and less than or equal to 10 wt %.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: September 1, 2015
    Assignee: KURIMOTO, LTD.
    Inventors: Yuya Ueshima, Shuichi Akaiwa, Junichi Noma
  • Patent number: 9044823
    Abstract: A plurality of short light metal billets obtained by pressing light metal pieces are stacked in a long container having an inside diameter D that is larger than an outside diameter d of each of the short light metal billets, are pressed in the long container at a temperature higher than room temperature, and are compressed until the outside diameter d of each of the short light metal billets becomes equal to the inside diameter D of the long container, thereby joining the short light metal billets together at an interface between each adjacent pair of the short light metal billets by friction.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: June 2, 2015
    Assignee: Kurimoto, Ltd.
    Inventors: Akihiko Koshi, Jinsun Liao
  • Patent number: 8906129
    Abstract: A copper alloy having excellent sliding performance is produced without relying on lead or molybdenum. The copper alloy contains a sintered Cu5FeS4 material produced by sintering a raw material powder that comprises Cu, Fe and S and is produced by a gas atomizing method.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: December 9, 2014
    Assignee: Kurimoto, Ltd.
    Inventors: Tomohiro Sato, Yoshimasa Hirai, Toru Maruyama, Takeshi Kobayashi
  • Publication number: 20140234017
    Abstract: A plurality of short light metal billets 1 obtained by pressing light metal pieces are stacked in a long container 2 having an inside diameter D that is larger than an outside diameter d of each of the short light metal billets 1, are pressed in the long container 2 at a temperature higher than room temperature, and are compressed until the outside diameter d of each of the short light metal billets 1 becomes equal to the inside diameter D of the long container 2, thereby joining the short light metal billets 1 together at an interface 4 between each adjacent pair of the short light metal billets 1 by friction.
    Type: Application
    Filed: June 25, 2012
    Publication date: August 21, 2014
    Applicant: KURIMOTO, LTD.
    Inventors: Akihiko Koshi, Jinsun Liao
  • Publication number: 20130341145
    Abstract: A magneto-rheological fluid includes: a magnetic particle mixture; and a dispersion medium in which the magnetic particle mixture is dispersed. The magnetic particle mixture includes first magnetic particles and second magnetic particles. The first magnetic particles have an average particle size greater than or equal to 1 ?m and less than or equal to 50 ?m. The second magnetic particles have an average particle size greater than or equal to 20 nm and less than or equal to 200 nm, and have surfaces provided with a surface modified layer. A proportion of the second magnetic particles in the magnetic particle mixture is greater than or equal to 2 wt % and less than or equal to 10 wt %.
    Type: Application
    Filed: August 22, 2013
    Publication date: December 26, 2013
    Applicant: Kurimoto, Ltd.
    Inventors: Yuya Ueshima, Shuichi Akaiwa, Junichi Noma
  • Patent number: 8178067
    Abstract: A production method of amorphous silicon oxide powder comprises a step of preparing a wood, agricultural crop or plant containing hexose and/or pentose and silicon oxide as a starting raw material, a step of hydrolyzing the starting raw material with nitric acid, hydrochloric acid, sulfuric acid, phosphoric acid or organic acid to reduce a content of the hexose to 10% by weight or less and/or a content of the pentose to 20% by weight or less, and a step of burning residue yielded in the hydrolyzing step at a temperature of 400° C. to 1200° C.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: May 15, 2012
    Assignee: Kurimoto, Ltd.
    Inventors: Katsuyoshi Kondoh, Yoshisada Michiura
  • Patent number: 7998448
    Abstract: A production method of amorphous silica comprises a step of preparing organic waste containing silicon oxide as a starting material, a step of immersing the organic waste in a carboxylic acid aqueous solution having a hydroxyl group, a step of washing the organic waste in water, and a step of heating the organic waste in the air atmosphere.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: August 16, 2011
    Assignees: Kurimoto, Ltd.
    Inventors: Katsuyoshi Kondoh, Yoshisada Michiura, Junko Umeda
  • Publication number: 20110150694
    Abstract: A Ti particle-dispersed magnesium-based composite material is a material having titanium particles uniformly dispersed in a magnesium matrix. Magnesium that forms the matrix and titanium particles are bonded together,) with satisfactory wettability without titanium oxide at an interface therebetween. The Ti particle-dispersed magnesium-based composite material has a tensile strength of 230 MPa or more.
    Type: Application
    Filed: March 16, 2009
    Publication date: June 23, 2011
    Applicant: Kurimoto Ltd.
    Inventors: Katsuyoshi Kondoh, Kantaro Kaneko