Patents by Inventor Nobuo Shiiba

Nobuo Shiiba 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: 6347757
    Abstract: A coal mill introduces raw coal between a roller and a ring and pulverizes the raw coal. A reduction gear for a mill is provided in a lower portion of the coal mill. A cooling fan is mounted to an input shaft of the reduction gear for the mill which is connected to a motor. A radiator for cooling a lubricating oil which lubricates within the reduction gear for the mill is arranged in an extending portion of the input shaft. An oil pump and a line filter are provided in a lubricating passage which supplies the lubricating oil to the radiator, and a flexible pipe connects between these elements. Accordingly, the coal mill is cooled by air.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: February 19, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Takeo Takahashi, Nobuo Shiiba, Masanori Katayama