Patents Assigned to Kobe Steel, Ltd.
  • Publication number: 20200295143
    Abstract: An object of the present invention is to provide: an oxide semiconductor thin film which is produced at relatively low cost and has a high carrier mobility and a high resistance to light stress when used for forming a thin film transistor; and a thin film transistor formed using the oxide semiconductor thin film. The oxide semiconductor thin film contains In, Zn, and Fe, wherein, with respect to a total number of In atoms, Zn atoms, and Fe atoms, a number of In atoms accounts for greater than or equal to 20 atm % and less than or equal to 89 atm %, a number of Zn atoms accounts for greater than or equal to 10 atm % and less than or equal to 79 atm %, and a number of Fe atoms accounts for greater than or equal to 0.2 atm % and less than or equal to 2 atm %. The present invention involves a thin film transistor including the oxide semiconductor thin film.
    Type: Application
    Filed: October 29, 2018
    Publication date: September 17, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Yumi TERAMAE, Hiroshi GOTO, Mototaka OCHI, Aya HINO
  • Publication number: 20200292418
    Abstract: A device for evaluating tire rolling resistance, the device includes: load rolls having surfaces that simulate a road surface on which a tire is to travel; a moving mechanism; a load sensor; a position sensor; a phase difference calculation unit; and a rolling resistance evaluation unit. The load rolls are two or more load rolls disposed side by side and are smaller in diameter than the tire.
    Type: Application
    Filed: August 30, 2017
    Publication date: September 17, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventor: Toru OKADA
  • Publication number: 20200291494
    Abstract: Disclosed herein is a reduced iron production method enabling heat to be input well into reduced-iron raw materials on a hearth covering material in a reduction-melting furnace to improve the efficiency of treatment thereof. The reduced-iron raw materials are set on the hearth covering material through their falls and reduced on the hearth covering material. The hearth covering material is constituted by carbon materials each having a particle diameter of 5 mm or less. At least 7 mass % of the carbon materials have respective particle diameters each being 0.1 mm or less. This restrains the reduced-iron raw materials from embedment into the hearth covering material.
    Type: Application
    Filed: May 12, 2017
    Publication date: September 17, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Taiji HATAKEYAMA, Shorin O, Masahiro HOTTA
  • Publication number: 20200282932
    Abstract: To compensate for a decrease in reaction force of a bumper reinforcement, which is made of an aluminum alloy extrusion having two end portions subjected to bend forming and crushed portions on the respective end portions, against an impact load in end impact involved in crushing, and compensate for a decrease in energy absorption amount of the bumper reinforcement. Assuming a space between two flanges includes a first region from a center line of the thickness between the flanges to an outer flange and a second region from the center line to an inner flange in a cross section of the crushed portion perpendicular to an extrusion direction, area of the webs located in one (for example, the first region) of the two regions is larger than area of the webs located in the other region (for example, the second region).
    Type: Application
    Filed: February 12, 2020
    Publication date: September 10, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Shinya MORITA, Narikazu Hashimoto, Tsunetake Tsuyoshi, Koji Tabata
  • Publication number: 20200282497
    Abstract: A method for designing an additively-manufactured object includes: a slicing step of slicing a shape of the additively-manufactured object into weld bead layers each having a height corresponding to one bead layer using data of the shape of the additively-manufactured object, thereby generating a plurality of virtual bead layers; a reference direction setting step of setting, as a reference direction, a direction in which the sliced layer of the additively-manufactured object is continuously provided and extended in an intermediate layer disposed at a deposition-direction center of the plurality of virtual bead layers; and a bead adjusting step of adjusting a bead size of the weld bead to be formed in the plurality of virtual bead layers depending on a bead shape in a section perpendicular to the reference direction.
    Type: Application
    Filed: November 29, 2018
    Publication date: September 10, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Takemasa YAMASAKI, Tatsuya FUJII, Shinji SATO, Takeshi YAMADA
  • Patent number: 10767787
    Abstract: Provided is an electrically-driven flow rate control valve capable of controlling a flow rate of a fluid flowing between two inlet/outlet ports, restraining a high pressure of the fluid from being applied to a sub valve body connected to an electric motor. The flow rate control valve has a casing, a raising/lowering drive device, a supply-switching valve, a main valve body, a valve-closing spring. When the electric motor of the raising/lowering drive device moves the sub valve body upward, oil of a back pressure chamber is discharged from a discharge oil passage through a sub valve body communication port and a sub valve body oil passage to open the main valve body. When the main valve body is closed, a pressure of the back pressure chamber is inhibited from being directly applied to a lower end face of the sub valve body.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: September 8, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Kei Morita, Naoki Sugano, Satoshi Maekawa, Takayuki Igaue
  • Patent number: 10766063
    Abstract: A mold wash is used in a casting method using a lost foam to make a casting having a hole with a diameter of 12 mm or less. The casting method includes determining a thermal decomposition amount ?C(?,t) [wt %] of a resin binder when the mold wash is exposed at a temperature ? [° C.] for a time t [sec], and determining a room temperature transverse rupture strength ?b(?,t) [MPa] of the mold wash after receiving thermal loads, and performing casting with the mold wash having the room temperature transverse rupture strength ?b(?,t) after receiving thermal loads being equal to or larger than a threshold value ?cr [MPa].
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: September 8, 2020
    Assignee: KOBE STEEL, LTD.
    Inventors: Eisuke Kurosawa, Kazuyuki Tsutsumi
  • Publication number: 20200276664
    Abstract: An additively manufactured object formed by depositing weld bead layers, each of the weld bead layers being obtained by melting and solidifying a filler metal made of a mild steel, the additively manufactured object includes a plurality of the weld bead layers having a ferrite phase with an average grain diameter of 11 ?m or less in a part except for a surface oxide film.
    Type: Application
    Filed: September 12, 2018
    Publication date: September 3, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Shinji SATO, Takeshi YAMADA, Takemasa YAMASAKI
  • Publication number: 20200276628
    Abstract: To suppress occurrence of stress corrosion cracking in a weld due to tensile residual stress generated in a web or a middle rib in case of bend forming of an aluminum alloy extrusion having the weld on the web or/and the middle rib. In bend forming of the aluminum alloy extrusion, a peak position of tensile residual stress generated in the middle rib exists in a region other than the vicinity of the weld. Since the peak position is away from the weld by a distance, tensile residual stress in the weld is reduced, making it possible to suppress occurrence of stress corrosion cracking.
    Type: Application
    Filed: February 28, 2020
    Publication date: September 3, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Koki Sugino, Masatoshi Yoshida
  • Publication number: 20200276544
    Abstract: A mixing apparatus includes a mixer configured to mix a material including a rubber or a resin in the presence of a working fluid that is in a supercritical state or a subcritical state. The mixer includes a chamber that forms a flow passage for the working fluid and the material, and a mixing blade disposed in the chamber and fixed to the chamber.
    Type: Application
    Filed: October 24, 2018
    Publication date: September 3, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kosuke HIGASHI, Kazuhisa FUKUTANI
  • Publication number: 20200269924
    Abstract: A structure for a vehicle, includes: one side structure made of steel and located on one of outer and inner sides of a vehicle body; and another side structure located on the other of the outer and inner sides of the vehicle body and joined to the one side structure. The another side structure includes: a top portion made of an aluminum alloy and protruding toward the other side; wall portions respectively extending from both end parts of the top portion to the one side, each wall portion being made of an aluminum alloy; and a tab portion attached to an end part of the wall portion, extending toward an outside of the another side structure, and joined to the one side structure, the tab portion being made of steel.
    Type: Application
    Filed: September 5, 2017
    Publication date: August 27, 2020
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kenichi WATANABE, Hideto KATSUMA, Liang CHEN
  • Patent number: 10751959
    Abstract: Provided are a device and a method capable of suitable cooling of a fiber bundle without hindering nozzle maintenance work or preparation work before the start of manufacturing. The provided device includes a nozzle which allows the fiber bundle impregnated with thermoplastic resin to pass therethrough while forming the fiber bundle into a tape shape, a cooling roller for cooling the fiber bundle, and a supporting device. The supporting device supports the cooling roller rotatably so as to allow the cooling roller to be moved between a cooling position at which an outer periphery surface of the cooling roller makes contact with the fiber bundle having passed through the nozzle and a retraction position away from the nozzle beyond the cooling portion.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: August 25, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Takehiko Wakazono, Naoyuki Tashiro, Yasuhiro Sakurai
  • Patent number: 10746162
    Abstract: The present application discloses a compressor including a crank shaft, a first reciprocation converter, a first cylinder body, a first pressurizing portion, a second reciprocation converter, which is connected to the crank shaft with a phase different by 180 degrees from the first reciprocation converter, a second cylinder body, a second pressurizing portion, and a connecting portion configured to interconnect the compression chambers. The compression chambers are arranged so that a timing at which the gas is discharged from a specific compression chamber among the compression chambers becomes the same as a timing at which the discharged gas is suctioned into another compression chamber at a higher side by one stage than the specific compression chamber.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: August 18, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Kenji Nagura, Takayuki Fukuda, Ryosuke Yamasaki, Tomohiro Ootsuka
  • Patent number: 10744552
    Abstract: The joining method for members according to the present invention includes: providing an aluminum component including an insertion hole provided with a rib in at least part of an edge part, and a hollow steel pipe; inserting the steel pipe into the insertion hole of the aluminum component; and expanding and deforming the steel pipe to join the steel pipe to the aluminum component by press-fitting.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: August 18, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Toru Hashimura, Kenichi Watanabe, Junya Naitou, Yasuhiro Maeda
  • Patent number: 10744583
    Abstract: A welding condition generating method in flat position welding is a method for determining welding conditions for welding in a single V groove, a single bevel groove, or a fillet groove in a flat position using a welding robot. The method includes preparing conditions A and B, each including a plurality of different parameters used in calculation for determining the welding conditions; and generating the welding conditions by combining parameters included in the conditions A and B. The condition A includes at least one of the following parameters: a joint shape, a groove shape, a groove angle, a gap width, and the presence or absence of backing. The condition B includes at least one of the following parameters: a welding gas type, a welding wire diameter, a welding wire type, a welding wire extension length, a welding source type, a power source characteristic, and a torch type.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: August 18, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Masatoshi Hida, Koji Kawakami
  • Patent number: 10746473
    Abstract: A stacked type fluid heater includes a first low temperature layer with low temperature side flow passages into which target medium to be heated is introduced, a first high temperature layer with high temperature side flow passages into which heating medium for heating the target medium to be heated is introduced, a second high temperature layer with high temperature side flow passages into which the heating medium is introduced. The target medium has a temperature lower than the freezing point of the heating medium. The first high temperature layer includes the high temperature side flow passages located adjacent each other via a metal material of the first high temperature layer. The high temperature side flow passages of the first high temperature layer and those of the second high temperature layer are adjacent each other via a metal material of the second high temperature layer.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: August 18, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Koji Noishiki, Yasutake Miwa
  • Patent number: 10746097
    Abstract: A compressed air energy storage power generation device includes a first heat exchanger, a heat storage tank, a second heat exchanger, a heating unit, a first power distributor, and a controller. The first heat exchanger performs heat exchange between the compressed air from a compressor and the heating medium. The heat storage tank stores the heating medium heatexchanged by the first heat exchanger. The second heat exchanger performs heat exchange between the compressed air from an accumulator tank and the heating medium from the heat storage tank. The first power distributor distributes the generated power of the power generator to a power system and the heating unit. When the internal pressure of the accumulator tank reaches a predetermined pressure and the generated power is larger than the power demand, the controller supplies a part or all of the generated power to the heating unit by the first power distributor.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: August 18, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Yohei Kubo, Masatake Toshima, Makoto Nishimura, Masaki Matsukuma, Hiroki Saruta, Kanami Sakamoto
  • Publication number: 20200254514
    Abstract: A crack-free continuous casting mold configured so that occurrence of cracks at a casting billet can be reduced even in a case where a casting speed exceeds 500 mm/min. The continuous casting mold continuously casts a casting billet while cooling molten metal by a cooling device provided at a cooling casting mold. The cooling device includes multiple cooling nozzles configured to release coolant water to the casting billet pulled out of the cooling casting mold to cool the casting billet. Multiple ejection ports of the multiple cooling nozzles are arranged along an outer circumferential direction of a surface of the casting billet. Each ejection port has a short side and a long side, and is configured such that the long side is arranged along an axial direction of the casting billet.
    Type: Application
    Filed: January 9, 2020
    Publication date: August 13, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Yuki Konishi, Kenichi Hirukawa, Hiroki Sawada
  • Publication number: 20200256765
    Abstract: Provided are a tire tangential load measuring device capable of directly measuring a tangential load of a tire and a tire rolling resistance evaluating device capable of evaluating a rolling resistance of a tire using the tire tangential load measuring device, without using a large-sized device. A tire tangential load measuring device (10) includes two or more load rolls (44A, 44B) smaller in diameter than that of the tire and arranged side by side, an air cylinder (13) as a moving mechanism capable of pressing the two or more load rolls (44A, 44B) against the rotating tire with a predetermined load fz, and a strain gauge (51) as a tangential load sensor for measuring the tangential load fx of the tire in a rotating state while the surfaces of the two or more load rolls (44A, 44B) are pressed against the tread surface of the tire with the predetermined load fz. The tire rolling resistance evaluating device uses the tangential load measuring device (10).
    Type: Application
    Filed: October 10, 2018
    Publication date: August 13, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventor: Toru OKADA
  • Patent number: 10737346
    Abstract: Provided is a welding robot mechanism that has: a welding robot having a touch sensing function; a welding power source for supplying welding power to the welding robot; and a control unit for controlling the welding robot, wherein the welding power source has a welding power source communication unit that receives detection signals with regard to control of the welding robot and the touch sensing, and transmits the detection signals outward. The control unit is linked to the welding power source communication unit via a serial bus communication wire. The detection signals comprise a mass of data including a detection data group designated as a first group and a detection data group designated as a second group, and is configured to read the detection data group designated as the first group in a shorter cycle than that for the detection data group designated as the second group. The detection data group designated as the first group includes a detection signal obtained by the touch sensing.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: August 11, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Tsutomu One, Takashi Wada, Shuichi Inada, Atsushi Fukunaga, Naoki Kida