Patents by Inventor Teruo EHARA

Teruo EHARA 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 for detecting shape of butt joint of welded steel pipe, and quality control method and apparatus for welded steel pipes using the shape detecting method
    Patent number: 10704897
    Abstract: The present invention provides a method for detecting a shape of a butt joint of a welded steel pipe. A specific detection range including a butt joint of a welded steel pipe is scanned with a non-contact means to obtain geometric coordinate data. Coordinates of a start point and an end point of the specific detection range, a first selected point located between the start point and the butt joint, and a second selected point located between the butt joint and the end point are selected from the geometric coordinate data. A first approximate circle including the start point, the end point, and the first selected point, and a second approximate circle including the start point, the end point, and the second selected point are calculated. A deviation between the first and the second approximate circles is used as an index representing the shape of the butt joint.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: July 7, 2020
    Assignee: NIPPON STEEL NISSHIN CO., LTD.
    Inventors: Takafumi Hiramoto, Yasuyuki Kino, Teruo Ehara
  • METHOD FOR DETECTING SHAPE OF BUTT JOINT OF WELDED STEEL PIPE, AND QUALITY CONTROL METHOD AND APPARATUS FOR WELDED STEEL PIPES USING THE SHAPE DETECTING METHOD
    Publication number: 20190323828
    Abstract: The present invention provides a method for detecting a shape of a butt joint of a welded steel pipe. A specific detection range including a butt joint of a welded steel pipe is scanned with a non-contact means to obtain geometric coordinate data. Coordinates of a start point and an end point of the specific detection range, a first selected point located between the start point and the butt joint, and a second selected point located between the butt joint and the end point are selected from the geometric coordinate data. A first approximate circle including the start point, the end point, and the first selected point, and a second approximate circle including the start point, the end point, and the second selected point are calculated. A deviation between the first and the second approximate circles is used as an index representing the shape of the butt joint.
    Type: Application
    Filed: July 14, 2017
    Publication date: October 24, 2019
    Inventors: Takafumi HIRAMOTO, Yasuyuki KINO, Teruo EHARA