Patents by Inventor Fumihiko Uchida

Fumihiko Uchida 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).

  • Tube-bending machine
    Patent number: 4380917
    Abstract: This invention relates to a tube-bending machine, which is so constructed that force detection means to detect a force acting in the axial direction of a mandrel under a tube-bending operation is disposed on the mandrel of tube-bending means so as to sense bending conditions such as a lubrication condition of an inner surface of a tube being bent and a mandrel position, and further that fluctuations from predetermined bending conditions, of the bending conditions during the tube-bending operation are detected and corrected.
    Type: Grant
    Filed: February 5, 1981
    Date of Patent: April 26, 1983
    Assignee: Hitachi, Ltd.
    Inventors: Fumihiko Uchida, Kazuo Sato, Soji Takahashi