Patents by Inventor Hideo Takekawa

Hideo Takekawa 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).

  • Method of joining steel sheet bars and a joining apparatus
    Patent number: 5396050
    Abstract: This invention rapidly and surely joins sheet bars to each other for continuously hot rolling in a high productivity by a combination of a treatment that the front end portion and the back end portion of these sheet bars are contacted and heated at such a contact region by applying alternating magnetic fields so as to pass in a thickness direction of the sheet bar with a treatment of pushing at least one of these sheet bars.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: March 7, 1995
    Assignee: Kawasaki Steel Corporation
    Inventors: Masanori Ebihara, Toshiaki Amagasa, Toshisada Takechi, Fujio Aoki, Hideo Takekawa, Naoki Hatano, Junzo Nitta, Kunio Yoshida, Hiroyuki Yoshimura
  • Method of joining steel sheet bars in hot rolling and a continuous hot rolling method
    Patent number: 5323951
    Abstract: In this invention, a back end portion of a preceding sheet bar and a front end of a succeeding sheet bar are cut in a transfer line at an entrance side of a finish rolling mill so that at least both side edge regions of these sheet bars are contacted with each other at a butted contact state thereof and a gap is formed between both end portions and then portions to be joined int he preceding and succeeding sheet bars are locally heated and pushed to join them while gradually enlarging a joining area, whereby the required time is largely reduced as compared with the conventional technique and also it is attempted to miniaturize the heating apparatus and shorten the length of the apparatus.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: June 28, 1994
    Assignee: Kawasaki Steel Corporation
    Inventors: Toshisada Takechi, Masanori Ebihara, Fujio Aoki, Kunio Yoshida, Naoki Hatano, Hiroshi Sekiya, Toshiaki Amagasa, Kuniaki Sato, Takashi Kawase, Hideo Takekawa, Norio Takashima, Takashi Ishikawa, Masanori Kitahama
  • Continous hot rolling method and joining method of sheet bar
    Patent number: 5292052
    Abstract: In the continuously hot rolling of plural sheet bars, in order to simply and surely join the sheet bars to the back end portion of the preceding sheet bar and the front end portion of the succeeding sheet bar are prejoined by butting to each other at an entrance side of a finish rolling mill and then bitten into the finish rolling mill, during which the joining of the sheet bars are promoted to conduct the continuous rolling.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: March 8, 1994
    Assignee: Kawasaki Steel Corporation
    Inventors: Nobuhiro Ito, Toshisada Takechi, Hideo Takekawa, Fujio Aoki, Hiroyuki Yoshimura, Norio Takashima, Masanori Ebihara, Masanori Kitahama