Patents by Inventor Yoshifumi Sameshima

Yoshifumi Sameshima 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).

  • Cylindrical-shaped workpiece evaluation method and evaluation apparatus
    Patent number: 6674891
    Abstract: To provide an evaluation method and an evaluation apparatus for a cylindrical-shaped workpiece designated by a shape developed on a two-dimensional plane. A single two-dimensional reference shape data is substantially designated from a hard disk which includes a plurality of two-dimensional reference shape data based on a two-dimensional shape displayed on a two-dimensional plane where a curved surface of a reference cylindrical-shaped workpiece is developed. A reference cylindrical-shaped workpiece having a curved surface with a two-dimensional shape corresponding to the read two-dimensional reference shape data is converted by a converter into a surface shape of the reference cylindrical-shaped workpiece. In addition, a surface shape of an evaluation object cylindrical-shaped workpiece is measured, and a distance between a measurement point in the measurement and a point in the surface shape of the reference cylindrical-shaped workpiece corresponding to the measurement point is obtained by a calculator.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: January 6, 2004
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Yoshifumi Sameshima