Patents by Inventor Teruo Tatefuku

Teruo Tatefuku 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).

  • Apparatus for arc-melting cold iron source and method thereof
    Patent number: 6693948
    Abstract: The present invention provides an arc-melting apparatus which attains extremely high efficiency by preheating scraps using exhaust gas from the melting chamber. The arc-melting apparatus needs for no device to carry and supply an iron source to a melting chamber, which makes it possible to preheat the next charge. The arc-melting apparatus has a melting furnace which melts scraps, a preheating shaft connected directly to an upper part of one side of the melting furnace, an arc electrode for melting scraps in the melting furnace, a bucket for supplying scraps to the preheat shaft so as to continuously maintain scraps in the melting furnace and in the preheating shaft, a tapping portion having a tapping hole, being projected outward from the melting furnace and a tilting device for tilting the melting furnace on a side of the tapping portion. The tapping portion is arranged at an orthogonal direction to the direction of the supplied cold iron source.
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: February 17, 2004
    Assignee: JP Steel Plantech Co.
    Inventors: Hideaki Mizukami, Ryuji Yamaguchi, Takashi Nakayama, Teruo Tatefuku, Norio Ao, Toshimichi Maki, Yasuhiro Sato, Hirotsugu Kubo
  • Apparatus for arc-melting cold iron source and method thereof
    Publication number: 20030193986
    Abstract: The present invention provides an arc-melting apparatus which attains extremely high efficiency by preheating scraps using exhaust gas from the melting chamber. The arc-melting apparatus needs for no device to carry and supply an iron source to a melting chamber, which makes it possible to preheat the next charge. The arc-melting apparatus has a melting furnace which melts scraps, a preheating shaft connected directly to an upper part of one side of the melting furnace, an arc electrode for melting scraps in the melting furnace, a bucket for supplying scraps to the preheat shaft so as to continuously maintain scraps in the melting furnace and in the preheating shaft, a tapping portion having a tapping hole, being projected outward from the melting furnace and a tilting device for tilting the melting furnace on a side of the tapping portion. The tapping portion is arranged at an orthogonal direction to the direction of the supplied cold iron source.
    Type: Application
    Filed: May 1, 2003
    Publication date: October 16, 2003
    Applicant: JP STEEL PLANTECH CO.
    Inventors: Hideaki Mizukami, Ryuji Yamaguchi, Takashi Nakayama, Teruo Tatefuku, Norio Ao, Toshimichi Maki, Yasuhiro Sato, Hirotsugu Kubo
  • Apparatus for arc-melting cold iron source and method threof
    Publication number: 20020009118
    Abstract: The present invention provides an arc-melting apparatus, which attains extremely high efficiency by preheating scraps using exhaust gas from the melting chamber. The arc-melting apparatus needs for no device to carry and supply an iron source to a melting chamber, which makes it possible to preheat the next charge. The arc-melting apparatus has a melting furnace which melts scraps, a preheating shaft connected directly to an upper part of one side of the melting furnace, an arc electrode for melting scraps in the melting furnace, a bucket for supplying scraps to the preheat shaft so as to continuously maintain scraps in the melting furnace and in the preheating shaft, a tapping portion having a tapping hole, being projected outward from the melting furnace and a tilting device for tilting the melting furnace on a side of the tapping portion. The tapping portion is arranged at an orthogonal direction to the direction of the supplied cold iron source.
    Type: Application
    Filed: February 1, 2001
    Publication date: January 24, 2002
    Applicant: NKK CORPORATION, 1-2, Marunouchi 1-chome, Chiyoda-ku, Tokyo, Japan
    Inventors: Hideaki Mizukami, Ryuji Yamaguchi, Takashi Nakayama, Teruo Tatefuku, Norio Ao, Toshimichi Maki, Yasuhiro Sato, Hirotsugu Kubo