Patents by Inventor Nobutaka Amma

Nobutaka Amma 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: 9702444
    Abstract: A method for manufacturing a fluid power transmission includes a first step of assembling a blade/core provisional assembly having a plurality of blades movably linked to a core, involving aligning the plurality of blades on a blade alignment jig, laying the core over a group of blades while extending a projecting piece provided on each blade through a latching hole provided in the core, and bending an extremity part of the projecting piece thus preventing the projecting piece from coming out of the latching hole, a second step of setting the blade/core provisional assembly at a predetermined position on an inside face of the shell, and a third step of carrying out brazing between the projecting piece and the latching hole and between the blade and the shell. Such method provides a high quality impeller of a fluid power transmission by joining a shell, a blade, and a core.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: July 11, 2017
    Assignee: Yutaka Giken Co., Ltd.
    Inventors: Tomohiro Okamura, Katsuyoshi Aoshima, Masaru Nambara, Nobutaka Amma, Yuji Horie
  • Publication number: 20150128418
    Abstract: A method for manufacturing a fluid power transmission includes a first step of assembling a blade/core provisional assembly having a plurality of blades movably linked to a core, involving aligning the plurality of blades on a blade alignment jig, laying the core over a group of blades while extending a projecting piece provided on each blade through a latching hole provided in the core, and bending an extremity part of the projecting piece thus preventing the projecting piece from coming out of the latching hole, a second step of setting the blade/core provisional assembly at a predetermined position on an inside face of the shell, and a third step of carrying out brazing between the projecting piece and the latching hole and between the blade and the shell. Such method provides a high quality impeller of a fluid power transmission by joining a shell, a blade, and a core.
    Type: Application
    Filed: April 23, 2013
    Publication date: May 14, 2015
    Inventors: Tomohiro Okamura, Katsuyoshi Aoshima, Masaru Nambara, Nobutaka Amma, Yuji Horie