Patents by Inventor Yasuhiro Yamachi

Yasuhiro Yamachi 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).

  • Method and apparatus for operating a cross-compound turbine generator plant
    Patent number: 4316362
    Abstract: A cross compound turbine apparatus and method of operating the same wherein the apparatus includes a first turbine generator having a high pressure turbine and a first low pressure turbine connected to a first generator driving shaft, with the second turbine generator having an intermediate pressure turbine connected to a second generator driving shaft. Driving steam is supplied to the high pressure turbine and a primary steam line communicates exhaust steam from the high pressure turbine to drive the intermediate pressure turbine during a steady state operation of the first and second turbine generator sections. A bypass steam line communicates steam from the system supplying driving steam to the high pressure turbine to the intermediate pressure turbine in a bypassing relationship to the high pressure turbine.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: February 23, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Satoshi Ninomiya, Yasuhiro Yamachi, Katsukuni Hisano, Ryosuke Arie, Katsuto Kashiwahara, Hidesumi Kuwashima