Patents by Inventor Tomohiro Yotabun

Tomohiro Yotabun 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).

  • Publication number: 20120276387
    Abstract: It is provided a high-temperature assembly that is favorable for increasing the sealing property at the boundary area between a first member and a second member that are used in a high-temperature environment. Further it is provided a method for producing the high-temperature assembly, and a heat-resistant sealing material. The heat-resistant sealing material, which is disposed at the boundary area between a first member and a second member, comprises ceramic particles made of a plurality of materials which form a ceramics the volume of which increases when the ceramics is synthesized.
    Type: Application
    Filed: November 15, 2010
    Publication date: November 1, 2012
    Applicant: TYK CORPORATION
    Inventors: Hirokatsu Hattanda, Tomohiro Yotabun
  • Patent number: 7546937
    Abstract: A poured molten metal quantity control device includes a fixed plate brick having at least one pouring port, a collector nozzle brick, a slide plate brick sandwiched therebetween, an outer race mounted so as to be turned on the outer peripheral side of the fixed plate brick by an extendable unit, and a frame having the slide plate brick mounted thereon that is mounted on the outer race through a pivotal hinge so as to be capable of opening and closing movements. The frame can be opened and closed through the pivotal hinge independently of the turning of the outer race with the extendable unit.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: June 16, 2009
    Assignee: JFE Engineering Corporation
    Inventors: Tsuneo Kondo, Ryuzo Nishimachi, Tomohiro Yotabun, Hisao Inubushi
  • Publication number: 20080272157
    Abstract: A fixed plate (15) is provided in a fixed metal frame (14). An opening and closing metal frame (17) having a movable plate (21) is attached to the fixed metal frame (14) so as to be openable and closable. The fixed metal frame (14) is provided with a pressurizing mechanism (23) applying a pressure in a closing direction generated by a spring (25) to the opening and closing metal frame (17) in a closed state. An actuating member (29) is movably provided at a position facing the pressurizing mechanism (23). Cam surfaces (30d, 32a) are provided between the actuating member (29) and the pressurizing mechanism (23). The spring (25) is deformed against an urging force thereof on the basis of operations of the cam surfaces (30d, 32a) in accordance with a movement of the actuating member (29), and the pressure applied to the opening and closing metal frame (17) is strengthened.
    Type: Application
    Filed: March 14, 2005
    Publication date: November 6, 2008
    Inventors: Tsuneo Kondo, Hideto Takasugi, Mitsuo Umemura, Yoshinobu Kawai, Tomohiro Yotabun, Hisamori Ikeda, Hisao Inubushi
  • Patent number: 7290685
    Abstract: It is an object to form a plate for a sliding nozzle apparatus in a shape for decreasing extreme erosion and extend durability of the plate to enable cost reduction, the sliding-nozzle plate having dimensions (unit length is mm) as indicated in following equations: a dimension from the center position X of the nozzle hole to a closest end of the plate for the sliding nozzle in the longitudinal direction is a sum of a dimension “b” from the center position X to an ideal circle with the position X as the center and a dimension “d” from the ideal circle to the closest end in the longitudinal direction, a dimension from the center position X and to a center position Y is a dimension S of the stroke, and a dimension from the center position Y to a closest end of the plate for the sliding nozzle in the longitudinal direction is a dimension “c”, where b: a+30˜40, c: 0.75a+20˜30, d:0.5a, S:2a+m, and m:15˜35.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: November 6, 2007
    Assignee: Tokyo Yogyo Kabushiki Kaisha
    Inventors: Tomohiro Yotabun, Tsuyoshi Mizuno, Tsuyoshi Yoshida
  • Publication number: 20070176335
    Abstract: A poured molten metal quantity control device includes a fixed plate brick having at least one pouring port, a collector nozzle brick, a slide plate brick sandwiched therebetween, an outer race mounted so as to be turned on the outer peripheral side of the fixed plate brick by an extendable unit, and a frame having the slide plate brick mounted thereon that is mounted on the outer race through a pivotal hinge so as to be capable or open and close operation, wherein the frame can be opened and closed by the pivotal hinge irrespectively of a turning means composed of the extendable unit as well as the outer race is turned by a crank mechanism using triangle points consisting of a support pivot P1, a center of turn P3, and a pivot P2, and the positions of the triangle points are defined such that the completely open/close positions of the pouring port are matched to the end point and the start point of the stroke of the extendable unit.
    Type: Application
    Filed: December 21, 2004
    Publication date: August 2, 2007
    Inventors: Tsuneo Kondo, Ryuzo Nishimachi, Tomohiro Yotabun, Hisao Inubushi
  • Publication number: 20050230886
    Abstract: It is an object to form a plate for a sliding nozzle apparatus in a shape for decreasing extreme erosion and extend durability of the plate to enable cost reduction, the sliding-nozzle plate having dimensions (unit length is mm) as indicated in following equations: a dimension from the center position X of the nozzle hole to a closest end of the plate for the sliding nozzle in the longitudinal direction is a sum of a dimension “b” from the center position X to an ideal circle with the position X as the center and a dimension “d” from the ideal circle to the closest end in the longitudinal direction, a dimension from the center position X and to a center position Y is a dimension S of the stroke, and a dimension from the center position Y to a closest end of the plate for the sliding nozzle in the longitudinal direction is a dimension “c”, where b: a+30˜40, c: 0.75a+20˜30, d: 0.5a, S: 2a+m, and m: 15˜25.
    Type: Application
    Filed: June 15, 2005
    Publication date: October 20, 2005
    Applicant: Tokyo Yogyo Kabushiki Kaisha
    Inventors: Tomohiro Yotabun, Tsuyoshi Mizuno, Tsuyoshi Yoshida
  • Patent number: D546849
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: July 17, 2007
    Assignee: Tokyo Yogyo Kabushiki Kaisha
    Inventors: Tomohiro Yotabun, Tsuyoshi Mizuno, Tsuyoshi Yoshida