Patents by Inventor Tetsuo Uzuka

Tetsuo Uzuka 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).

  • Linear magnetization mover motor due to linear force resulting from the interaction between magnetostatic induction element and electromagnetic coil
    Patent number: 5302872
    Abstract: A linear motor has a mover that is a magnetostatic induction element and is relatively movable through electromagnetic coils or the like. The mover has a length of a magnetic path which derives attraction from the coil in regard to the length of the electromagnetic coil. As the magnetostatic induction element proceeds through the electromagnetic coils, the electromagnetic coils are energized while the magnetic field created thereby exert forward attractive force on the magnetostatic induction element, and disenergized before the traction in a reverse direction is exerted on the magnetostatic induction element.
    Type: Grant
    Filed: July 7, 1992
    Date of Patent: April 12, 1994
    Assignees: Railway Technical Research Institute, Yasutsugu Ohki
    Inventors: Yasutsugu Ohki, Shin-ichi Hase, Hiroyasu Toda, Kouichi Matsuoka, Tetsuo Uzuka