Patents by Inventor Tadatoshi Nagasaki

Tadatoshi Nagasaki 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: 11391325
    Abstract: In order to enable a bearing system in which a plurality of bearings operate simultaneously or in association with each other to achieve an optimal overall performance: this bearing system is equipped with a bearing A and a measurement execution unit A therefor, a bearing B and a measurement execution unit B therefor, and a control unit for controlling the measurement execution unit A and the measurement execution unit B; the control unit transmits an instruction to the measurement execution unit A and the measurement execution unit B to enable execution of the performance required of the bearing system. The measurement execution unit A and the measurement execution unit B respectively operate the bearing A and the bearing B under an instructed operation condition.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: July 19, 2022
    Assignee: DAIDO METAL COMPANY LTD.
    Inventors: Kwangik Na, Yuji Kawaai, Tadatoshi Nagasaki
  • Publication number: 20210215204
    Abstract: In order to enable a bearing system in which a plurality of bearings operate simultaneously or in association with each other to achieve an optimal overall performance: this bearing system is equipped with a bearing A and a measurement execution unit A therefor, a bearing B and a measurement execution unit B therefor, and a control unit for controlling the measurement execution unit A and the measurement execution unit B; the control unit transmits an instruction to the measurement execution unit A and the measurement execution unit B to enable execution of the performance required of the bearing system. The measurement execution unit A and the measurement execution unit B respectively operate the bearing A and the bearing B under an instructed operation condition.
    Type: Application
    Filed: July 5, 2019
    Publication date: July 15, 2021
    Inventors: Kwangik NA, Yuji KAWAAI, Tadatoshi NAGASAKI
  • Patent number: 10400821
    Abstract: When an annular portion of a thrust collar rotates together with a rotating shaft member, centrifugal force and shear force, or differential pressure caused by difference in flow rate are generated in lubricating oil in a circulation oil chamber. With this, the lubricating oil in the circulation oil chamber is guided from the inner peripheral side to the outer peripheral side of the annular portion, through a circulation hole penetrating the annular portion. The flow of lubricating oil guided by the circulation hole forms a flow of lubricating oil from a lower oil chamber to an upper oil chamber through the circulation oil chamber. As a result, the lubricating oil stored in the lower oil chamber is circulated to the upper oil chamber through the circulation oil chamber, by rotation of the thrust collar.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: September 3, 2019
    Assignee: DAIDO METAL COMPANY LTD.
    Inventors: Kwangik Na, Shigeyoshi Mori, Tadatoshi Nagasaki
  • Publication number: 20180238389
    Abstract: When an annular portion of a thrust collar rotates together with a rotating shaft member, centrifugal force and shear force, or differential pressure caused by difference in flow rate, for example, are generated in lubricating oil in a circulation oil chamber. With this, the lubricating oil in the circulation oil chamber is guided from the inner peripheral side to the outer peripheral side of the annular portion, through a circulation hole penetrating the annular portion. The flow of lubricating oil guided by the circulation hole forms a flow of lubricating oil from a lower oil chamber to an upper oil chamber through the circulation oil chamber. As a result, the lubricating oil stored in the lower oil chamber is circulated to the upper oil chamber through the circulation oil chamber, by rotation of the thrust collar.
    Type: Application
    Filed: May 24, 2016
    Publication date: August 23, 2018
    Inventors: Kwangik NA, Shigeyoshi MORI, Tadatoshi NAGASAKI
  • Patent number: 10018222
    Abstract: A resin coating layer in a sliding member has a surface shape indicated by a shape line. This shape line is divided into recessed sections and protruding sections by an average line for uneven areas. The inclination R of a straight line connecting the bottom of these recessed sections and the peak of these protruding sections is classified into Ra: R<0.02, Rb: 0.02?R?0.04, and Rc: 0.04<R. The sliding member comprises a resin coating layer fulfilling Ra+Rb?50%.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: July 10, 2018
    Assignee: DAIDO METAL COMPANY LTD.
    Inventors: Shigeru Inami, Tetsuya Ogawa, Tadatoshi Nagasaki
  • Publication number: 20170314614
    Abstract: A resin coating layer in a sliding member has a surface shape indicated by a shape line. This shape line is divided into recessed sections and protruding sections by an average line for uneven areas. The inclination R of a straight line connecting the bottom of these recessed sections and the peak of these protruding sections is classified into Ra: R<0.02, Rb: 0.02?R?0.04, and Rc: 0.04<R. The sliding member comprises a resin coating layer fulfilling Ra+Rb?50%.
    Type: Application
    Filed: February 24, 2016
    Publication date: November 2, 2017
    Inventors: Shigeru INAMI, Tetsuya OGAWA, Tadatoshi NAGASAKI
  • Patent number: 9208955
    Abstract: A dye-sensitized solar cell fabricating kit for fabricating a dye-sensitized solar cell includes a semiconductor electrode having a semiconductor layer carrying a dye, an opposite electrode disposed opposite the semiconductor electrode, an electrolytic solution made by dissolving electrolyte in a solvent and caused to fill between the semiconductor electrode and the opposite electrode during an initial assembly, the electrolytic solution being supplemented when decreased after assembly, so that an electrolyte concentration at the time of supplement is lower than an electrolyte concentration of the electrolytic solution supplied during the initial assembly, and a sealing member detachably attachable to an inlet through which the electrolytic solution is supplied between the semiconductor electrode and the opposite electrode to close the inlet.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: December 8, 2015
    Assignee: DAIDO METAL COMPANY LTD.
    Inventors: Yasutake Kato, Hideyumi Matsumura, Eiji Kato, Tadatoshi Nagasaki
  • Publication number: 20080314448
    Abstract: A dye-sensitized solar cell fabricating kit for fabricating a dye-sensitized solar cell includes a semiconductor electrode having a semiconductor layer carrying a dye, an opposite electrode disposed opposite the semiconductor electrode, and an electrolyte made by dissolving electrolyte in a solvent and caused to fill between the semiconductor electrode and the opposite electrode during an initial assembly. The electrolyte is supplemented when decreased after assembly, so that a concentration of electrolyte at the time of supplement is lower than a concentration of electrolyte supplied during the initial assembly.
    Type: Application
    Filed: May 14, 2008
    Publication date: December 25, 2008
    Inventors: Yasutake KATO, Hideyumi Matsumura, Eiji Kato, Tadatoshi Nagasaki