Patents by Inventor Setsuo Yazawa

Setsuo Yazawa 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).

  • Centrifugal type fluid machine
    Patent number: 6162015
    Abstract: A highly efficient centrifugal type fluid machine is configured so that the vane outlet angle or the vane outlet diameter at a side plate end (4a) of a single stage or a plurality of stages of a diffuser (D) is made larger than the vane outlet angle or the vane outlet diameter at a core plate end (4b), and the vane curve at a pressure surface end of a single stage or a plurality of stages of the diffuser (D) is formed to have the same radius of curvature at the side plate end (4a) and at the core plate end (4b), while the vane curve at a negative pressure surface end is formed to have a radius of curvature so that the vane thickness at the core plate end (4b) is larger than that at the side plate end (4a).
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: December 19, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Yuuji Nagai, Yoshiharu Ueyama, Setsuo Yazawa, Sadashi Tanaka, Yoshihiro Nagaoka