Patents by Inventor Nobuyuki Yokoi
Nobuyuki Yokoi 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).
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Patent number: 9782826Abstract: A sliding nozzle device that can reduce any damage such as surface roughness and chipping in a nozzle hole surroundings of a used plate.Type: GrantFiled: March 25, 2014Date of Patent: October 10, 2017Assignee: KROSAKIHARIMA CORPORATIONInventors: Junici Funato, Nobuyuki Yokoi, Toshihiro Imahase
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Publication number: 20160045956Abstract: A sliding nozzle device that can reduce any damage such as surface roughness and chipping in a nozzle hole surroundings of a used plate.Type: ApplicationFiled: March 25, 2014Publication date: February 18, 2016Inventors: Junici FUNATO, Nobuyuki YOKOI, Toshihiro IMAHASE
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Patent number: 7108046Abstract: In an immersion nozzle exchanging apparatus for supporting an immersion nozzle at a flange underside thereof by a plurality of key plates parallel provided on both sides to horizontally pushing out and exchange an immersion nozzle much used with a new immersion nozzle, in order to secure high realability in the joint surface at between the immersion nozzle and the refractory positioned above thereof, the immersion nozzle exchanging apparatus comprises urge pressure providing mechanisms independent of each key plate for continuously changing a deflection amount of a spring body thereof depending on a moving position of the immersion nozzle upon exchanging the immersion nozzle and at the same time changing an immersion nozzle urging force caused on the respective key plates, and a slide frame having a spring body supporting seat surface formed with a taper surface in part thereof. The immersion nozzle to be used therein has a concave surface for holding a seal member having a depth of 1.Type: GrantFiled: December 27, 2004Date of Patent: September 19, 2006Assignee: Krosaki Harima CorporationInventors: Yasuo Kawano, Nobuyuki Yokoi, Junichi Funato, Yukio Inoue, Motoki Toyota
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Publication number: 20060137849Abstract: In an immersion nozzle exchanging apparatus for supporting an immersion nozzle at a flange underside thereof by a plurality of key plates parallel provided on both sides to horizontally pushing out and exchange an immersion nozzle much used with a new immersion nozzle, in order to secure high realability in the joint surface at between the immersion nozzle and the refractory positioned above thereof, the immersion nozzle exchanging apparatus comprises urge pressure providing mechanisms independent of each key plate for continuously changing a deflection amount of a spring body thereof depending on a moving position of the immersion nozzle upon exchanging the immersion nozzle and at the same time changing an immersion nozzle urging force caused on the respective key plates, and a slide frame having a spring body supporting seat surface formed with a taper surface in part thereof. The immersion nozzle to be used therein has a concave surface for holding a seal member having a depth of 1.Type: ApplicationFiled: December 27, 2004Publication date: June 29, 2006Applicant: KROSAKIHARIMA CORPORATIONInventors: Yasuo Kawano, Nobuyuki Yokoi, Junichi Funato, Yukio Inoue, Motoki Toyota
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Patent number: 6902121Abstract: In an immersion nozzle exchanging apparatus for supporting an immersion nozzle at a flange underside thereof by a plurality of key plates parallel provided on both sides to horizontally pushing out and exchange an immersion nozzle much used with a new immersion nozzle, in order to secure high realability in the joint surface at between the immersion nozzle and the refractory positioned above thereof, the immersion nozzle exchanging apparatus comprises urge pressure providing mechanisms independent of each key plate for continuously changing a deflection amount of a spring body thereof depending on a moving position of the immersion nozzle upon exchanging the immersion nozzle and at the same time changing an immersion nozzle urging force caused on the respective key plates, and a slide frame having a spring body supporting seat surface formed with a taper surface in part thereof. The immersion nozzle to be used therein has a concave surface for holding a seal member having a depth of 1.Type: GrantFiled: May 21, 2001Date of Patent: June 7, 2005Assignee: Krosaki Harima CorporationInventors: Yasuo Kawano, Nobuyuki Yokoi, Junichi Funato, Yukio Inoue, Motoki Toyota
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Patent number: 6896162Abstract: A sliding nozzle unit in which a face pressure load is released by inserting a cotter into a press member provided in an open close metal frame and sliding the cotter on an inclination block provided on the side face of a sliding metal frame thereby flexing a resilient body through the press member. The inclination block is spaced apart from the nozzle hole of a sliding plate on the longitudinal side face of the sliding metal frame. Inclining face of the inclination block is formed to become lower toward the direction for fully closing the nozzle hole and a stop member is provided on the longitudinal side face of the sliding metal frame, in the vicinity of nozzle hole of the sliding plate, so that the nozzle hole is not fully opened under a state where the cotter is inserted into the press member.Type: GrantFiled: April 30, 2002Date of Patent: May 24, 2005Assignee: Krosakiharima CorporationInventors: Nobuyuki Yokoi, Akira Otsuka, Motoki Toyota, Haruyuki Oba
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Publication number: 20040104521Abstract: A sliding nozzle unit in which a face pressure load is released by inserting a cotter into a press member provided in an open close metal frame and sliding the cotter on an inclination block provided on the side face of a sliding metal frame thereby flexing a resilient body through the press member. The inclination block is spaced apart from the nozzle hole of a sliding plate on the longitudinal side face of the sliding metal frame. Inclining face of the inclination block is formed to become lower toward the direction for fully closing the nozzle hole and a stop member is provided on the longitudinal side face of the sliding metal frame, in the vicinity of nozzle hole of the sliding plate, so that the nozzle hole is not fully opened under a state where the cotter is inserted into the press member.Type: ApplicationFiled: November 3, 2003Publication date: June 3, 2004Inventors: Nobuyuki Yokoi, Akira Otsuka, Motoki Toyota, Haruyuki Oba
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Publication number: 20030029892Abstract: In an immersion nozzle exchanging apparatus for supporting an immersion nozzle at a flange underside thereof by a plurality of key plates parallel provided on both sides to horizontally pushing out and exchange an immersion nozzle much used with a new immersion nozzle, in order to secure high realability in the joint surface at between the immersion nozzle and the refractory positioned above thereof, the immersion nozzle exchanging apparatus comprises urge pressure providing mechanisms independent of each key plate for continuously changing a deflection amount of a spring body thereof depending on a moving position of the immersion nozzle upon exchanging the immersion nozzle and at the same time changing an immersion nozzle urging force caused on the respective key plates, and a slide frame having a spring body supporting seat surface formed with a taper surface in part thereof. The immersion nozzle to be used therein has a concave surface for holding a seal member having a depth of 1.Type: ApplicationFiled: August 1, 2002Publication date: February 13, 2003Inventors: Yasuo Kawano, Nobuyuki Yokoi, Junichi Funato, Yukio Inoue, Motoki Toyota
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Patent number: 4660749Abstract: A sliding nozzle apparatus for a molten metal holding vessel including a fixed nozzle member and a fixed plate therefor which are supported by an upper or fixed bracket secured to the vessel, and a movable nozzle member and a slidable plate therefor which are supported by a lower or movable bracket having one edge hinged to the upper bracket, while its opposite edge remote from its hinged connection to the upper bracket is removably connectable to the upper bracket to bring the slidable plate into contact with the fixed plate. A first set of coil springs are located adjacent to the edge of the lower bracket at which it is hinged to the upper bracket, and a second set of coil springs are located adjacent to the opposite edge of the lower bracket. The first set of coil springs are deflected to a greater degree than the second set of coil springs, or are, in other words, preloaded differently from the second set of springs.Type: GrantFiled: September 9, 1985Date of Patent: April 28, 1987Assignee: Kurosaki Refractories Co., Ltd.Inventors: Nobuyuki Yokoi, Toshimitsu Taira, Koji Tsuyuguchi
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Patent number: D781940Type: GrantFiled: January 28, 2015Date of Patent: March 21, 2017Assignee: KROSAKI HARIMA CORPORATIONInventors: Haruyuki Ooba, Toshihiro Imahase, Nobuyuki Yokoi, Nobuaki Takagi