Patents by Inventor Nagahiro Akiyoshi

Nagahiro Akiyoshi 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).

  • Patent number: 5063798
    Abstract: A device for cutting a pipe including a first carriage, which is movable on the base of the device and has an outer cutter, and a second carriage mounted on the first carriage. The second carriage includes a plurality of guide rods arranged on a support arm so that when the support arm is rotated the guide rods draw a circle and the pipe is fed to fit on each of the guide rods interchangeably. Each guide rod has an inner cutter so that the outer cutter in cooperation with the inner cutter cuts the pipe while the first carriage is moved in the direction in which the pipe is fed into the device.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: November 12, 1991
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Takeo Kitaoka, Nagahiro Akiyoshi