Patents by Inventor Ayumu Furukawa

Ayumu Furukawa 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).

  • Concentricity measuring apparatus and method, squareness measuring apparatus and method, and concentricity-squareness measuring apparatus and method
    Patent number: 7458168
    Abstract: An apparatus for measuring concentricity of two holes at both ends of a cylindrical member includes a rotation unit supporting and rotating the cylindrical member about one of the holes, and an unit measuring the concentricity by measuring a relative position of an inner circumferential surface of the other hole to the center line of the one hole over the whole inner circumferential surface, while the member is rotated. An apparatus for measuring squareness of one end surface of a partition wall between the two holes in the cylindrical member to a longitudinal center line of the one hole includes, in addition to the rotation unit, an unit measuring the squareness by measuring a relative position of the one end surface of the partition wall along the longitudinal center line of the other hole over the whole circumference of the one end surface, while the member is rotated.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: December 2, 2008
    Assignee: Olympus Medical Systems Corp.
    Inventor: Ayumu Furukawa
  • CONCENTRICITY MEASURING APPARATUS AND METHOD, SQUARENESS MEASURING APPARATUS AND METHOD, AND CONCENTRICITY-SQUARENESS MEASURING APPARATUS AND METHDO
    Publication number: 20070180721
    Abstract: An apparatus for measuring concentricity of two holes at both ends of a cylindrical member includes a rotation unit supporting and rotating the cylindrical member about one of the holes, and an unit measuring the concentricity by measuring a relative position of an inner circumferential surface of the other hole to the center line of the one hole over the whole inner circumferential surface, while the member is rotated. An apparatus for measuring squareness of one end surface of a partition wall between the two holes in the cylindrical member to a longitudinal center line of the one hole includes, in addition to the rotation unit, an unit measuring the squareness by measuring a relative position of the one end surface of the partition wall along the longitudinal center line of the other hole over the whole circumference of the one end surface, while the member is rotated.
    Type: Application
    Filed: February 2, 2007
    Publication date: August 9, 2007
    Inventor: Ayumu FURUKAWA