Patents by Inventor Katsuyoshi Aoyama

Katsuyoshi Aoyama 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).

  • Mechanical anchor
    Patent number: 6793444
    Abstract: A mechanical anchor includes an anchor unit that is divided into a plurality of divided anchor units which are movably connected to a tension rod to be moved in lateral directions. The anchor unit is opened or closed by the movement of the divided anchor units, and the anchor unit forms a cylindrical shape when the divided anchor units are closed. A driving member for opening or closing the anchor unit is mounted on an inner side of the anchor unit in such manner that the driving member is extended in a longitudinal direction of the anchor unit. The driving member and each of the divided anchor units are connected with each other so that the driving force of the driving member is equally applied on each of the divided anchor units.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: September 21, 2004
    Assignees: Kabushikigaisha Jiban Shikenjo, Koyo Kogyo Kabushikigaisha
    Inventors: Shigeki Kondo, Katsuyoshi Aoyama