Patents by Inventor Akira Isida

Akira Isida 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).

  • Device for connecting turbine blades
    Patent number: 4401411
    Abstract: A device for connecting the turbine blades of a turbine having a plate-shaped member provided at the radially outer end of each turbine blade and extended substantially at a right angle to the longitudinal plane of the turbine blade. The plate-shaped member is projected from the leading and trailing edges of the turbine blade, and is provided with through bores formed in each projected portion. Connecting members having cylindrical pins or the like projections are disposed between two adjacent turbine blades in such a manner that the projections are rotatably received by respective through bores. Namely, one of the connecting members is connected to the plate-shaped member of the leading edge of the turbine blade while the other connecting member is connected to the plate-shaped member of the trailing edge of the preceding adjacent turbine blade.
    Type: Grant
    Filed: June 4, 1981
    Date of Patent: August 30, 1983
    Assignee: Hitachi, Ltd.
    Inventors: Katsukuni Hisano, Kazuo Ikeuchi, Makoto Nishimura, Hazime Sibaoka, Kiyoshi Namura, Akira Isida, Katsumi Oyabu
  • Electronic copying machine
    Patent number: D328609
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: August 11, 1992
    Assignee: Ricoh Company, Ltd.
    Inventor: Akira Isida