Patents by Inventor Osamu Nogata

Osamu Nogata 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).

  • Hollow cylindrical movable body for an electromagnet
    Patent number: 4746887
    Abstract: An electromagnet includes a lightweight movable body in the form of a hollow cylindrical body. The resistances of circulation paths for eddy currents flowing in the movable body due to electromagnetic induction are increased to suppress the eddy currents. Excitation coils are connected parallel to each other to reduce the coil inductance for increasing the magnetic forces to attract the movable body and the response thereof.
    Type: Grant
    Filed: September 3, 1985
    Date of Patent: May 24, 1988
    Assignee: Techonological Research Association
    Inventors: Osamu Nogata, Takashi Kajima, Toshiharu Ozaki