Card – picture – or sign exhibiting – Display device with magnetically moved object
Patent
1977-07-18
1979-12-18
Pitrelli, John F.
Card, picture, or sign exhibiting
Display device with magnetically moved object
40538, 46236, G09F 1900
Patent
active
041787072
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. A magnetic environment or field is created whereby the object to be displayed can be floated in a state of dynamic equilibrium in a stable condition over the magnetic material, the object, of course, having magnetic material within it magnetized so as to have a like pole facing or opposite a like pole of the said material. Improved action and performance is realized by the arrangement as described.
REFERENCES:
patent: 2323837 (1943-07-01), Neal
patent: 2471002 (1949-05-01), Mohr
patent: 2702191 (1955-02-01), Lemelson
patent: 3006111 (1961-10-01), Koch
patent: 3964746 (1976-06-01), MacMurdo
Pitrelli John F.
Skillington G. Lee
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