Patents by Inventor Tsutomu Shima

Tsutomu Shima 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).

  • Production method and production facility of metal pipe
    Patent number: 9938602
    Abstract: A method of producing a metal pipe which can suppress quenching defects is provided. In the method, a bend of the metal pipe is straightened by a straightening machine 10. Next, both pipe end portions of the metal pipe whose bend has been straightened are cut off by a pipe cutting apparatus 20. Next, a plurality of the metal pipes whose both pipe end portions have been cut off are aligned in the axial direction thereof to be conveyed to a quenching apparatus 30, and the metal pipes are quenched by being cooled after being heated by induction heating.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: April 10, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Shunichi Otsuka, Kazuhiro Uchida, Takuya Hanada, Masami Sakiyama, Tsutomu Shima
  • PRODUCTION METHOD AND PRODUCTION FACILITY OF METAL PIPE
    Publication number: 20150068650
    Abstract: A production method of a metal pipe which can suppress quenching defects is provided. In the production method of a metal pipe according an embodiment of the present invention bend of the metal pipe is straightened by a straightening machine 10. Next, both pipe end portions of the metal pipe whose bend has been straightened are cut off by a pipe cutting apparatus 20. Next, a plurality of the metal pipes whose both pipe end portions have been cut off are aligned in the axial direction thereof to be conveyed to a quenching apparatus 30, and the metal pipes are quenched by being cooled after being heated by induction heating.
    Type: Application
    Filed: February 22, 2013
    Publication date: March 12, 2015
    Inventors: Shunichi Otsuka, Kazuhiro Uchida, Takuya Hanada, Masami Sakiyama, Tsutomu Shima