Patents by Inventor John V. Littlefield

John V. Littlefield 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: 4178707
    Abstract: A display apparatus of the type wherein an object is supported by magnetic force to create the illusion that the object is floating or flying. In the apparatus, the magnetic force is balanced against gravity. Magnetized material is utilized which may be alnico, ceramic, or other compound or alloy or a material such as rubber bonded barium ferrite composition, the material being magnetized through the thickness or diameter of the material. That is, the magnetic material may be in the form of a flat elongated bar or a cylindrical bar or the like. The N pole is opposite the S pole over the entire surface area of the material as distinguished from a rod or bar that is magnetized through the length with the N pole at one end and the S pole at the opposite end.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: December 18, 1979
    Inventor: John V. Littlefield