Patents by Inventor Yoshiharu Hirota

Yoshiharu Hirota 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).

  • Flow stop control method and apparatus for casting withdrawal control of horizontal continuous casting machine
    Patent number: 4660618
    Abstract: In a horizontal continuous casting machine having a casting withdrawing cycle consisting of withdrawing, stopping and push-back periods, a method of controlling the stop of the flow of a casting during the stopping period of the withdrawing cycle so as to stop the flow of the casting within a predetermined period. The desired braking torque is calculated in consideration of the load variations due to the casting condition of the horizontal continuous casting machine and the braking torque is applied to the pinch roll shafts upon the termination of the withdrawing period thereby effecting the stop of the flow of the casting during the stopping period within the predetermined time.
    Type: Grant
    Filed: August 9, 1985
    Date of Patent: April 28, 1987
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Kazuo Mitani, Yoshiharu Hirota, Shinobu Kumagai, Shigeki Komori, Masahiro Tsuru