Patents Assigned to Kokoku Wire Steel Ltd.
  • Method of manufacturing steel tire cords
    Patent number: 5111649
    Abstract: A method of manufacturing a tire steel cord formed of more than three strands twisted together, at least one of the strands being marked so as to formed therein with zig-zagging marked parts which form gaps between strands, rubber accordingly immersing the steel cord into its center part through the thus formed gaps so as to fill in a cavity in the center part of the steel cord.
    Type: Grant
    Filed: March 7, 1991
    Date of Patent: May 12, 1992
    Assignee: Kokoku Wire Steel Ltd.
    Inventor: Hidenori Watakabe