Patents by Inventor Yoshihiro Urabe

Yoshihiro Urabe 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).

  • Rotary hearth furnace and screw thereof for discharging reduced iron
    Patent number: 6814924
    Abstract: A rotary hearth furnace is provided to simplify detachment and assembly operations of a reduced iron discharging screw. At both side walls of an insulating housing 2a constituting in part of a furnace body 2 of a rotary hearth furnace 1 are installed through-holes which a spiral blade 42 of a reduced iron discharging screw 4 can pass through, each of the through-holes is closed by an inner hatch member 8 and an outer hatch member 9 which are externally mounted in a removable fashion to a rotary shaft 41 of the reduced iron discharging screw 4, an inner screw supporting device 10 is installed in the outside at an inner periphery side of the hearth 3 as well as an outer screw supporting device 20 is installed in the outside at an outer periphery side of the hearth 3. The reduced iron discharging screw 4 is detached from the furnace body 2 via the through-holes and assembled to the furnace body 2 via the through-holes by using the inner screw supporting device 10 and the outer screw supporting device 20.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: November 9, 2004
    Assignee: Kobe Steel, Ltd.
    Inventors: Yoshihiro Urabe, Sumito Hashimoto, Takao Umeki
  • Discharge apparatus for movable hearth type heat-treatment furnace, its operation method, and method and apparatus for manufacturing molten iron using the same
    Patent number: 6669756
    Abstract: Heat-treated products discharged from a discharge port of a movable hearth type heat treatment furnace, for example a rotary hearth type reduction furnace are discharged to a sorting means, the heat-treated products that foreign substances have been removed, are discharged through a seal leg into which anti-reoxidation gas is blown from a gas blowing nozzle, to a receiving recess of a receiving pan provided within a case having a hopper attached thereto which is a feeding means, and then a scraper is swung to discharge the heat-treated products deposited on the top surface of the receiving recess from the longitudinal ends of the receiving pan and simultaneously to quantitatively feed it to a molten iron-manufacturing furnace 8, which is a downstream side facility, from the bottom side discharge port of the casing having a hopper attached thereto, and in addition, dust removal/cooling means for produced gas of the molten iron-manufacturing furnace and means for regulating the amount of produced gas are provid
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: December 30, 2003
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Yoshihiro Urabe, Takao Umeki, Masahiko Tetsumoto, Toshikatsu Uchida, Sumito Hashimoto
  • Rotary hearth furnace and screw thereof for discharging reduced iron
    Patent number: 6660221
    Abstract: A rotary hearth furnace is provided to simplify detachment and assembly operations of a reduced iron discharging screw. At both side walls of an insulating housing 2]a constituting in part of a furnace body 2 of a rotary hearth furnace 1 are installed through-holes which a spiral blade 42 of a reduced iron discharging screw 4 can pass through, each of the through-holes is closed by an inner hatch member 8 and an outer hatch member 9 which are externally mounted in a removable fashion to a rotary shaft 41 of the reduced iron discharging screw 4, an inner screw supporting device 10 is installed in the outside at an inner periphery side of the hearth 3 as well as an outer screw supporting device 20 is installed in the outside at an outer periphery side of the hearth 3. The reduced iron discharging screw 4 is detached from the furnace body 2 via the through-holes and assembled to the furnace body 2 via the through-holes by using the inner screw supporting device 10 and the outer screw supporting device 20.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: December 9, 2003
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Yoshihiro Urabe, Sumito Hashimoto, Takao Umeki
  • Rotary hearth furnace and screw thereof for discharging reduced iron
    Publication number: 20030201585
    Abstract: A rotary hearth furnace is provided to simplify detachment and assembly operations of a reduced iron discharging screw.
    Type: Application
    Filed: May 30, 2003
    Publication date: October 30, 2003
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd)
    Inventors: Yoshihiro Urabe, Sumito Hashimoto, Takao Umeki
  • Rotary hearth furnace and screw thereof for discharging reduced iron
    Publication number: 20030075842
    Abstract: A rotary hearth furnace is provided to simplify detachment and assembly operations of a reduced iron discharging screw.
    Type: Application
    Filed: October 22, 2001
    Publication date: April 24, 2003
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd)
    Inventors: Yoshihiro Urabe, Sumito Hashimoto, Takao Umeki
  • Discharge apparatus for movable hearth type heat-treatment furnace, its operation method, and method and apparatus for manufacturing molten iron using the same
    Publication number: 20020024172
    Abstract: Heat-treated products discharged from a discharge port of a movable hearth type heat treatment furnace, for example a rotary hearth type reduction furnace are discharged to a sorting means, the heat-treated products that foreign substances have been removed, are discharged through a seal leg into which anti-reoxidation gas is blown from a gas blowing nozzle, to a receiving recess of a receiving pan provided within a case having a hopper attached thereto which is a feeding means, and then a scraper is swung to discharge the heat-treated products deposited on the top surface of the receiving recess from the longitudinal ends of the receiving pan and simultaneously to quantitatively feed it to a molten iron-manufacturing furnace 8, which is a downstream side facility, from the bottom side discharge port of the casing having a hopper attached thereto, and in addition, dust removal/cooling means for produced gas of the molten iron-manufacturing furnace and means for regulating the amount of produced gas are provid
    Type: Application
    Filed: July 30, 2001
    Publication date: February 28, 2002
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Yoshihiro Urabe, Takao Umeki, Masahiko Tetsumoto, Toshikatsu Uchida, Sumito Hashimoto