Patents by Inventor Yomei Yoshioka

Yomei Yoshioka 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).

  • Patent number: 6966753
    Abstract: A sole plate in use for turbine capable of realizing a smooth sliding on a gland pad used in the mounting portion of power generating plant equipment, effectively suppressing a variation in the alignment of a rotating shaft by a reaction due to thermal expansion and the thrust of a gas turbine, and eliminating a regular maintenance such as filing of lubricating oil, and disposed between the gland pad installed on a base and a turbine support part, comprising a sole plate body made of a metal material disposed on the turbine support part sole and a sliding member made of a material with self-lubricity formed on the surface of the sole plate body on the gland pad side.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: November 22, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Than Trong Long, Atsushi Kimoto, Yomei Yoshioka, Toshihiro Fujiwara, Osamu Watanabe
  • Patent number: 6938447
    Abstract: An apparatus for correcting deformation of a gas turbine blade includes a stationary die fixed to a backside of a tip shroud of a gas turbine blade to hold a back surface thereof and a pressing die pressing a front surface of the tip shroud so as to press the tip shroud of the blade between the pressing die and the stationary. A hydraulic drive mechanism including pressure generator is arranged for pressing the pressing die against the tip shroud held by the stationary die and a control device is operatively connected to the hydraulic drive mechanism so as to set and indicate a driving condition on a basis of deformation correction data preliminarily stored in the control device.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: September 6, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiaki Fuse, Daizo Saito, Yomei Yoshioka, Masahiro Hiragishi, Junji Ishii
  • Publication number: 20040144078
    Abstract: A sole plate in use for turbine capable of realizing a smooth sliding on a gland pad used in the mounting portion of power generating plant equipment, effectively suppressing a variation in the alignment of a rotating shaft by a reaction due to thermal expansion and the thrust of a gas turbine, and eliminating a regular maintenance such as filing of lubricating oil, and disposed between the gland pad installed on a base and a turbine support part, comprising a sole plate body made of a metal material disposed on the turbine support part sole and a sliding member made of a material with self-lubricity formed on the surface of the sole plate body on the gland pad side.
    Type: Application
    Filed: November 20, 2003
    Publication date: July 29, 2004
    Inventors: Than Trong Long, Atsushi Kimoto, Yomei Yoshioka, Toshihiro Fujiwara, Osamu Watanabe
  • Publication number: 20040035163
    Abstract: An apparatus for correcting deformation of a gas turbine blade includes a stationary die fixed to a backside of a tip shroud of a gas turbine blade to hold a back surface thereof and a pressing die pressing a front surface of the tip shroud so as to press the tip shroud of the blade between the pressing die and the stationary. A hydraulic drive mechanism including pressure generator is arranged for pressing the pressing die against the tip shroud held by the stationary die and a control device is operatively connected to the hydraulic drive mechanism so as to set and indicate a driving condition on a basis of deformation correction data preliminarily stored in the control device.
    Type: Application
    Filed: June 26, 2003
    Publication date: February 26, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshiaki Fuse, Daizo Saito, Yomei Yoshioka, Masahiro Hiragishi, Junji Ishii
  • Patent number: 6673308
    Abstract: A nickel-base single-crystal superalloy, essentially consists of, in percentages by weight, 4.0% to 11.0% of cobalt, 3.5% to less than 5.0% of chromium, 0.5% to 3.0% of molybdenum, 7.0% to 10.0% of tungsten, 4.5% to 6.0% of aluminum, 0.1% to 2.0% of titanium, 5.0% to 8.0% of tantalum, 1.0% to 3.0% of rhenium, 0.01% to 0.5% of hafnium, 0.01% to 0.1% of silicon, and a balance being nickel and inevitable impurity, a total amount of rhenium and chromium being not less than 4.0% and a total amount of rhenium, molybdenum, tungsten and chromium being not more than 18.0%.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: January 6, 2004
    Assignees: Kabushiki Kaisha Toshiba, Independent Administrative Institution National Institute for Material Science
    Inventors: Takehisa Hino, Yutaka Koizumi, Toshiharu Kobayashi, Shizuo Nakazawa, Hiroshi Harada, Yutaka Ishiwata, Yomei Yoshioka
  • Patent number: 6499946
    Abstract: A steam turbine rotor having a combination of at least one of a high pressure rotor, an intermediate pressure rotor and a low pressure rotor, which are each formed from a metal material of different chemical composition and welded together by means of welding.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: December 31, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masayuki Yamada, Takao Inukai, Masataka Kikuchi, Joji Kaneko, Satoru Asai, Yoichi Tsuda, Ryuichi Ishii, Yomei Yoshioka
  • Publication number: 20020062886
    Abstract: A nickel-base single-crystal superalloy, essentially consists of, in percentages by weight, 4.0% to 11.0% of cobalt, 3.5% to less than 5.0% of chromium, 0.5% to 3.0% of molybdenum, 7.0% to 10.0% of tungsten, 4.5% to 6.0% of aluminum, 0.1% to 2.0% of titanium, 5.0% to 8.0% of tantalum, 1.0% to 3.0% of rhenium, 0.01% to 0.5% of hafnium, 0.01% to 0.1% of silicon, and a balance being nickel and inevitable impurity, a total amount of rhenium and chromium being not less than 4.0% and a total amount of rhenium, molybdenum, tungsten and chromium being not more than 18.0%.
    Type: Application
    Filed: August 30, 2001
    Publication date: May 30, 2002
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takehisa Hino, Yutaka Koizumi, Toshiharu Kobayashi, Shizuo Nakazawa, Hiroshi Harada, Yutaka Ishiwata, Yomei Yoshioka
  • Patent number: 6159314
    Abstract: The invention relates to a nickel-base single-crystal superalloy applied to parts for industrial gas turbine or the like such as turbine rotor blade and stator blade which are used at high temperatures, a method for manufacturing the same, and gas turbine parts prepared from such nickel-base single-crystal superalloys, and more particularly the invention provides a nickel-base single-crystal superalloy consisting essentially of, in percentages by weight, 5% to 10% cobalt, 4.7% to 6% chromium, more than 2.0% to less than 3.5% molybdenum, 7.5% to 10% tungsten, 5% to 6% aluminum, 0.1% to 2% titanium, 4% to 5.5% tantalum, 1% to 4% rhenium, 0.01% to 0.2% hafnium, the balance being nickel and incidental impurities, which is excellent in high-temperature strength and high-temperature corrosion resistance, and further excellent in structural stability even in a long time use.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: December 12, 2000
    Assignees: Kabushiki Kaisha Toshiba, National Research Institute for Metals
    Inventors: Yutaka Koizumi, Toshiharu Kobayashi, Shizuo Nakazawa, Hiroshi Harada, Tosihiro Yamagata, Takehisa Hino, Yomei Yoshioka
  • Patent number: 5455777
    Abstract: An apparatus for predicting a deterioration and damage in a structural member of a prime mover or the like has a use condition monitoring unit for monitoring a condition of use of the structural member, an inspection unit for inspecting a deteriorated and damaged state of the structural member, a use condition setting unit for setting a use condition by being supplied with use condition data of the structural member from the use condition monitoring unit, a simulation unit for forming a model of the deterioration and damage in the structural member on the basis of the use condition of the structural member and a result of inspection of the structural member at a preceding time, and for simulating the advancement of the deterioration and damage in the structural member on the basis of the deterioration/damage model, and an inverse analysis unit for correcting a simulation model formed by the simulation unit by comparing the simulation model with a result of inspection of the structural member at the present ti
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: October 3, 1995
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazunari Fujiyama, Itaru Murakami, Yomei Yoshioka, Nagatoshi Okabe