Patents by Inventor Motoki Yoshikawa

Motoki Yoshikawa 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).

  • Stationary blade cascade, assembling method of stationary blade cascade, and steam turbine
    Patent number: 9359907
    Abstract: A stationary blade cascade 29 of an embodiment includes stationary blade structures 50 and a ring-shaped support structure 40 supporting the stationary blade structures 50. The stationary blade structures 50 each include: a stationary blade part 51 where steam passes; and an outer circumference side constituent part 52 formed on an outer circumference side of the stationary blade part 51 and having a fitting groove 56 which penetrates all along a circumferential direction and which has an opening 55 all along the circumferential direction in a downstream end surface 54 of the outer circumference side constituent part 52. The support structure 40 includes a ring-shaped support part 42 having a fitting portion 41 fitted in the fitting grooves 56 of the outer circumference side constituent parts 52. The plural stationary blade structures 50 are supported along the circumferential direction by the ring-shaped support part 42.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: June 7, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tsuguhisa Tashima, Itaru Murakami, Motoki Yoshikawa
  • STATIONARY BLADE CASCADE, ASSEMBLING METHOD OF STATIONARY BLADE CASCADE, AND STEAM TURBINE
    Publication number: 20130149136
    Abstract: A stationary blade cascade 29 of an embodiment includes stationary blade structures 50 and a ring-shaped support structure 40 supporting the stationary blade structures 50. The stationary blade structures 50 each include: a stationary blade part 51 where steam passes; and an outer circumference side constituent part 52 formed on an outer circumference side of the stationary blade part 51 and having a fitting groove 56 which penetrates all along a circumferential direction and which has an opening 55 all along the circumferential direction in a downstream end surface 54 of the outer circumference side constituent part 52. The support structure 40 includes a ring-shaped support part 42 having a fitting portion 41 fitted in the fitting grooves 56 of the outer circumference side constituent parts 52. The plural stationary blade structures 50 are supported along the circumferential direction by the ring-shaped support part 42.
    Type: Application
    Filed: November 28, 2012
    Publication date: June 13, 2013
    Inventors: Tsuguhisa TASHIMA, Itaru Murakami, Motoki Yoshikawa