Patents by Inventor Kazunari Kawai

Kazunari Kawai 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).

  • Patent number: 10443765
    Abstract: A threaded joint for pipes including a pin and a box, characterized in that the relationship 0.05 degrees??sb??sp?2.0 degrees is satisfied, where ?sb is an angle of an insertion surface of the female thread on the box side relative to a plane perpendicular to an axis of pipe, and ?sp is an angle of an insertion surface of the male thread, which faces the insertion surface of the female thread, on the pin side relative to the plane perpendicular to the axis of pipe.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: October 15, 2019
    Assignee: JFE STEEL CORPORATION
    Inventors: Takuya Nagahama, Hiroshi Chikatsune, Kazunari Takahashi, Masaki Yoshikawa, Jun Takano, Masateru Ueta, Takamasa Kawai
  • Patent number: 10360646
    Abstract: A mine management system to mine ore in a mine including a mining area, and a second mine shaft connecting the mining area and a first mine shaft, the mine management system includes: a transporting machine loading the ore mined in the mining area and transporting the ore to a soil discharge area while traveling in the first mine shaft; a loading machine staying in the second mine shaft while a space for the transporting machine to travel therein is left inside the first mine shaft, excavating the ore in the mining area, conveying the mined ore from the mining area in an opposite direction, and loading the ore on the transporting machine; and a management device determining the mining area toward which the transporting machine is directed so that an operability of the loading machine becomes maximal or an operability of the transporting machine becomes maximal.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: July 23, 2019
    Assignees: Komatsu Ltd., The University of Tokyo
    Inventors: Yuichi Kodama, Masaaki Uetake, Kazunari Kawai, Shinichi Terada, Rui Fukui
  • Patent number: 10352165
    Abstract: A mine mining system mining ore from a vein in a mine including a mining area provided inside an ore body, a first mine shaft provided inside the ore body, and a second mine shaft connecting the mining area and the first mine shaft to each other, the mine mining system includes: a transporting machine which loads the ore mined in the mining area and transports the ore to a soil discharge area while traveling in the first mine shaft; and a loading machine which stays in the second mine shaft, excavates the ore in the mining area, conveys the excavated ore in a direction moving away from the mining area, and loads the ore on the transporting machine.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: July 16, 2019
    Assignees: Komatsu Ltd., The University of Tokyo
    Inventors: Yuichi Kodama, Masaaki Uetake, Kazunari Kawai, Shinichi Terada, Rui Fukui
  • Patent number: 10354341
    Abstract: A mine management system to mine ore in a mine including a mining area, a first mine shaft, and a second mine shaft connecting the mining area and the first mine shaft, the mine management system includes: a transporting machine loading the ore mined in the mining area and transporting the ore to a soil discharge area while traveling in the first mine shaft; a loading machine staying in the second mine shaft while a space for the transporting machine to travel therein is left inside the first mine shaft, excavating the ore in the mining area, conveying the mined ore from the mining area in an opposite direction, and loading the mined ore on the transporting machine; and a management device determining a mining area in which the loading machine is disposed based on a difference between a production plan and an actual production amount of the mine.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: July 16, 2019
    Assignees: Komatsu Ltd., The University of Tokyo
    Inventors: Yuichi Kodama, Masaaki Uetake, Kazunari Kawai, Shinichi Terada, Rui Fukui
  • Patent number: 10295091
    Abstract: A threaded joint is adapted for tubes where the stress or the strain concentration hardly occur at a threaded corner portion of box side even when the threaded joint receives repeated tensile-compressive forces or repeated bending forces. In a radial seal type threaded joint, tensile efficiency TE (%) defined by a ratio Sc/Sp between a cross-sectional area Sc, an area of Critical Cross Section (CCS) including a portion where a tensile stress and a strain become the highest in a tube circumferential cross section of a box and a cross-sectional area Sp of a tube body satisfies formula TE (%)?2.25×t/?+99.9 having a ratio t/? between an internal thread height t of the box and a radius of curvature ? of a corner portion of internally-threaded bottom load surface side.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: May 21, 2019
    Assignee: JFE Steel Corporation
    Inventors: Masaki Yoshikawa, Hiroshi Chikatsune, Kazunari Takahashi, Takuya Nagahama, Jun Takano, Masateru Ueta, Takamasa Kawai
  • Publication number: 20190112924
    Abstract: Provided is a tunnel boring machine that can detect a wear condition of a disc cutter with a highly reliable configuration. The tunnel boring machine includes a measurement device. The measurement device is disposed behind the disc cutter mounted on a cutter head. The measurement device has a function as an acquisition unit that acquires cutting edge position data indicating a position of a cutting edge part of a cutter ring in the disc cutter. The tunnel boring machine further includes a DC discrimination unit that discriminates which one of a plurality of disc cutters is the disc cutter the cutting edge position data of which is acquired by the measurement device and a wear amount calculator that calculates a wear amount of the cutting edge part of the discriminated disc cutter.
    Type: Application
    Filed: April 24, 2017
    Publication date: April 18, 2019
    Applicant: KOMATSU LTD.
    Inventors: Kazunari KAWAI, Shinichi TERADA, Eiichi MORIOKA
  • Patent number: 10240457
    Abstract: A mine management system includes a carrying machine that is loaded with ore and travels from a mining area to an earth removal area in underground of a mine, a loading machine that mines ore in the mining area and loads the ore onto the carrying machine, and a management device that sets a work mode in the underground based on an input signal, and changes a work parameter of the carrying machine and a work parameter of the loading machine.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: March 26, 2019
    Assignee: Komatsu Ltd.
    Inventors: Kazunari Kawai, Shinichi Terada, Taito Fujita, Yuichi Kodama, Masaaki Uetake
  • Publication number: 20180258608
    Abstract: An excavation machine includes a detector detecting a state of an object to be excavated a storage storing a plurality of pieces of excavation information in which a state of a first portion before excavated by a learning excavation device, and a first operation of when the learning excavation device excavates the first portion are associated with each other, and a processor including an estimation unit obtaining a state of a second portion intended to be excavated the state having been detected by the detector, an operation determining unit selecting the state of the first portion corresponding to the state of the obtained second portion, from among the states of the first portions of the excavation information, and determining the first operation corresponding to the selected state, as a second operation of when excavating the second portion, and an excavation controller operating an excavation device with the second operation.
    Type: Application
    Filed: January 8, 2016
    Publication date: September 13, 2018
    Inventors: Masaaki Uetake, Nobuki Hasegawa, Kazunari Kawai, Taito Fujita, Yuichi Kodama, Rui Fukui, Takayoshi Niho
  • Patent number: 9873365
    Abstract: A transport machine is provided with a traveling device, a vehicle body, a vessel, a support device and a load detection device. At least a portion of the vehicle body is arranged above the traveling device. The vessel is provided on the vehicle body. The support device includes a slide mechanism that moves the vessel in a lateral direction with respect to the vehicle body, the lateral direction intersecting with a traveling direction of the traveling device when the transport machine travels straight. The load detection device detects a state of a load on the vessel. The slide mechanism is controlled based on a result of detection by the load detection device.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: January 23, 2018
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Uetake, Yuichi Kodama, Kazunari Kawai, Shinichi Terada
  • Patent number: 9828856
    Abstract: A conveyance machine that conveys a load, the conveyance machine includes: a traveling unit; a vehicle body arranged above the traveling unit; a vessel provided on the vehicle body; a first detecting unit that detects a loading machine that loads a load on the vessel; and a processing unit that adjusts a position of the vessel according to a detected result of the first detecting unit so as the vessel to be positioned at a loading point where the loading machine performs loading.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: November 28, 2017
    Assignees: Komatsu Ltd., The University of Tokyo
    Inventors: Yuichi Kodama, Masaaki Uetake, Kazunari Kawai, Shinichi Terada, Rui Fukui
  • Publication number: 20170174900
    Abstract: The present invention provides an energy curable coating composition comprising a carboxylic acid functional acrylate monomer, a polyester acrylate oligomer and at least one further oligomer. Furthermore the present also provides a process for preparing a coated substrate, in particular a flooring substrate which comprises applying an energy curable coating composition onto a substrate and curing the composition. The composition provides improved flow and leveling characteristics and a coating with high degree of scratch resistance.
    Type: Application
    Filed: December 5, 2014
    Publication date: June 22, 2017
    Applicant: DIC IMAGING PRODUCTS USA LLC
    Inventors: Russell ANDERSON, Shingo KUSANO, Kazunari KAWAI
  • Publication number: 20170138193
    Abstract: A mine management system includes a carrying machine that is loaded with ore and travels from a mining area to an earth removal area in underground of a mine, a loading machine that mines ore in the mining area and loads the ore onto the carrying machine, and a management device that sets a work mode in the underground based on an input signal, and changes a work parameter of the carrying machine and a work parameter of the loading machine.
    Type: Application
    Filed: February 6, 2015
    Publication date: May 18, 2017
    Inventors: Kazunari Kawai, Shinichi Terada, Taito Fujita, Yuichi Kodama, Masaaki Uetake
  • Patent number: 9617853
    Abstract: An auxiliary tunneling apparatus includes a reaction force receiver and first and second split components. In the excavation of a second tunnel by a boring machine, the reaction force receiver forms a replacement face of a side wall of the second tunnel on a first tunnel side where the first and second tunnels intersect each other, and a gripper of the boring machine pushes against the replacement face. The first and second split components are installed to push against the side wall of the first tunnel, support the reaction force receiver within the first tunnel, and move back and forth with respect to the side wall of the first tunnel.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: April 11, 2017
    Assignee: KOMATSU LTD.
    Inventors: Kazunari Kawai, Shinichi Terada, Yuuichi Kodama, Masaaki Uetake, Hiroshi Asano, Takashi Minami, Junya Tanimoto
  • Publication number: 20160333131
    Abstract: Provided are an active energy ray-curable composition fox flooring materials, which is unlikely to cause a curing defect between a cured portion and an uncured portion even when a movable curing device having a light source is used is unlikely to cause yellowing attributable to exposure to natural light for a long period of time, and exhibits a high re-coatability, while exhibiting conventional physical performance, and a construction method therefor. Further, also provided are an active energy ray-curable composition for antibacterial flooring materials, which has antibacterial properties, and a construction method therefor. The active energy ray-curable composition for flooring materials is formed by appropriately applying a specific carboxyl group-containing active energy ray-polymerizable compound, a specific urethane oligomer, a specific hyperbranched oligomer, specific polyfunctional acrylate, and a specific photopolymerization initiator in combination.
    Type: Application
    Filed: January 15, 2015
    Publication date: November 17, 2016
    Applicant: DIC CORPORATION
    Inventors: Kazunari Kawai, Shingo Kusano
  • Publication number: 20160333215
    Abstract: Provided is an active energy ray-curable composition for flooring materials, which more strongly adheres to flooring materials that contain vinyl chloride while maintaining conventional physical performance. Specifically provided is an active energy ray-curable composition for flooring materials, which contains an active energy ray-polymerizable compound and a photopolymerization initiator, wherein the active energy ray-polymerizable compound includes a polyvinyl chloride-insoluble compound (A) which does not dissolve or does not substantially dissolve in polyvinyl chloride and a polyvinyl chloride-soluble compound (B) which dissolves in polyvinyl chloride, and the content of the compound (B) is in a range of 3% to 40% by weight with respect to the content of the compound (A).
    Type: Application
    Filed: December 18, 2014
    Publication date: November 17, 2016
    Applicant: DIC CORPORATION
    Inventors: Kazunari KAWAI, Shingo KUSANO
  • Publication number: 20160237820
    Abstract: A conveyance machine that conveys a load, the conveyance machine includes: a traveling unit; a vehicle body arranged above the traveling unit; a vessel provided on the vehicle body; a first detecting unit that detects a loading machine that loads a load on the vessel; and a processing unit that adjusts a position of the vessel according to a detected result of the first detecting unit so as the vessel to be positioned at a loading point where the loading machine performs loading.
    Type: Application
    Filed: September 30, 2014
    Publication date: August 18, 2016
    Inventors: Yuichi Kodama, Masaaki Uetake, Kazunari Kawai, Shinichi Terada, Rui Fukui
  • Publication number: 20160232622
    Abstract: A mine management system (1) is used to mine ore from a vein in a mine including mining areas provided at the downside of the vein, a first mine shaft provided at the downside of the vein, and second mine shafts connecting the mining areas to the first mine shaft and includes: a transporting machine which loads the ore mined in the mining area and transports the ore to a soil discharge area while traveling in the first mine shaft; a loading machine which stays in the second mine shaft while a space used for the transporting machine to travel therein is left inside the first mine shaft, excavates the ore in the mining area, conveys the mined ore from the mining area in the opposite direction, and loads the ore on the transporting machine; and a management device which determines the mining area toward which the transporting machine is directed so that the operability of the loading machine becomes maximal or the operability of the transporting machine becomes maximal.
    Type: Application
    Filed: September 30, 2014
    Publication date: August 11, 2016
    Applicants: Komatsu Ltd., The University of Tokyo
    Inventors: Yuichi Kodama, Masaaki Uetake, Kazunari Kawai, Shinichi Terada, Rui Fukui
  • Publication number: 20160229326
    Abstract: A transport machine is provided with a traveling device, a vehicle body, a vessel, a support device and a load detection device. At least a portion of the vehicle body is arranged above the traveling device. The vessel is provided on the vehicle body. The support device includes a slide mechanism that moves the vessel in a lateral direction with respect to the vehicle body, the lateral direction intersecting with a traveling direction of the traveling device when the transport machine travels straight. The load detection device detects a state of a load on the vessel. The slide mechanism is controlled based on a result of detection by the load detection device.
    Type: Application
    Filed: September 30, 2014
    Publication date: August 11, 2016
    Applicant: KOMATSU Ltd.
    Inventors: Masaaki Uetake, Yuichi Kodama, Kazunari Kawai, Shinichi Terada
  • Publication number: 20160215621
    Abstract: A mine mining system mining ore from a vein in a mine including a mining area provided inside an ore body, a first mine shaft provided inside the ore body, and a second mine shaft connecting the mining area and the first mine shaft to each other, the mine mining system includes: a transporting machine which loads the ore mined in the mining area and transports the ore to a soil discharge area while traveling in the first mine shaft; and a loading machine which stays in the second mine shaft, excavates the ore in the mining area, conveys the excavated ore in a direction moving away from the mining area, and loads the ore on the transporting machine.
    Type: Application
    Filed: September 30, 2014
    Publication date: July 28, 2016
    Inventors: Yuichi Kodama, Masaaki Uetake, Kazunari Kawai, Shinichi Terada, Rui Fukui
  • Publication number: 20160217535
    Abstract: A mine management system to mine ore in a mine including a mining area, a first mine shaft, and a second mine shaft connecting the mining area and the first mine shaft, the mine management system includes: a transporting machine loading the ore mined in the mining area and transporting the ore to a soil discharge area while traveling in the first mine shaft; a loading machine staying in the second mine shaft while a space for the transporting machine to travel therein is left inside the first mine shaft, excavating the ore in the mining area, conveying the mined ore from the mining area in an opposite direction, and loading the mined ore on the transporting machine; and a management device determining a mining area in which the loading machine is disposed based on a difference between a production plan and an actual production amount of the mine.
    Type: Application
    Filed: September 30, 2014
    Publication date: July 28, 2016
    Applicants: Komatsu Ltd., The University of Tokyo
    Inventors: Yuichi Kodama, Masaaki Uetake, Kazunari Kawai, Shinichi Terada, Rui Fukui