Patents by Inventor Kazutaka Kanda

Kazutaka Kanda 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).

  • Bit apparatus
    Patent number: 6637528
    Abstract: A bit apparatus in which a cutter member having cutting teeth is axially supported on a shaft for rotation about the shaft, and a bearing mechanism is interposed between the cutter member and the shaft. The bearing mechanism includes at least a radial bearing for bearing a radially directed load and a thrust bearing for bearing an axially directed load. The radial bearing has a shaft-side split bearing member and a cutter-side split bearing member that are opposed to or in sliding contact with each other and capable of rotating relative to each other.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: October 28, 2003
    Assignee: Japan National Oil Corporation
    Inventors: Akio Nishiyama, Osamu Nakamura, Kazutaka Kanda, Masahiro Arai, Kunio Komaki
  • Bit apparatus
    Publication number: 20010042644
    Abstract: Disclosed is a bit apparatus in which a cutter member having cutting teeth is axially supported on a shaft for rotation about the shaft, and a bearing mechanism is interposed between the cutter member and the shaft. The bearing mechanism includes at least a radial bearing for bearing a radially directed load and a thrust bearing for bearing an axially directed load. The radial bearing has a shaft-side split bearing member and a cutter-side split bearing member that are opposed to or in sliding contact with each other and capable of rotating relative to each other.
    Type: Application
    Filed: April 11, 2001
    Publication date: November 22, 2001
    Inventors: Akio Nishiyama, Osamu Nakamura, Kazutaka Kanda, Masahiro Arai, Kunio Komaki