Patents by Inventor Hiroumi Shimokawa

Hiroumi Shimokawa 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).

  • Steel pipe stiffening brace member and manufacturing method thereof
    Patent number: 9003723
    Abstract: A method of manufacturing a steel pipe stiffening brace member which has a shaft constituted of a main shaft member and an auxiliary shaft member and a stiffening steel pipe obtained by connecting side edges of four flat steels surrounding the shaft to each other. In the stiffening steel pipe, inside nook portions facing a side edge of the main shaft member are formed in stiffening members 25 and 26 having a V- or L-shaped cross section by fillet welding, and outside corner portions 25b and 26b are formed in the stiffening members 25 and 26 by partial penetration welding. Thereafter, side edges of the stiffening members 25 and 26 are abutted against each other, outside corner portions 27b and 28b are temporarily assembled by partial penetration welding, and outside corner portions 25b and 26b and outside corner portions 27b and 28b are subjected to partial penetration welding.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: April 14, 2015
    Assignee: JFE Steel Corporation
    Inventors: Takuya Ueki, Hiroumi Shimokawa, Munetada Yamaji, Taku Funaba
  • STEEL PIPE STIFFENING BRACE MEMBER AND MANUFACTURING METHOD THEREOF
    Publication number: 20140150372
    Abstract: A method of manufacturing a steel pipe stiffening brace member which has a shaft constituted of a main shaft member and an auxiliary shaft member and a stiffening steel pipe obtained by connecting side edges of four flat steels surrounding the shaft to each other. In the stiffening steel pipe, inside nook portions facing a side edge of the main shaft member are formed in stiffening members 25 and 26 having a V- or L-shaped cross section by fillet welding, and outside corner portions 25b and 26b are formed in the stiffening members 25 and 26 by partial penetration welding. Thereafter, side edges of the stiffening members 25 and 26 are abutted against each other, outside corner portions 27b and 28b are temporarily assembled by partial penetration welding, and outside corner portions 25b and 26b and outside corner portions 27b and 28b are subjected to partial penetration welding.
    Type: Application
    Filed: November 5, 2010
    Publication date: June 5, 2014
    Applicant: JFE STEEL Corporation
    Inventors: Takuya Ueki, Hiroumi Shimokawa, Munetada Yamaji, Taku Funaba