Apparatus for displaying the interactions between magnetic field

Details Apparatus for displaying the interactions between magnetic field Apparatus for displaying the interactions between magnetic field

1997-01-30

1999-03-23

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

40426, 446129, 446131, 446132, 446133, 446134, 310 1, 310103, A63H 3326, G09F 1900, H01F 702

Patent

active

058866086

ABSTRACT:
A device for displaying the loose coupling between magnetic fields is provided, comprising a first disk having a plurality of magnetic elements attached to the first disk so that the magnetic field of the magnets extend radially from an outer edge of the first disk, a second disk having a plurality of magnetic elements attached to the second disk so that the magnetic field of the magnets extend radially from an outer edge of the second disk so that the magnets on the disks are loosely coupled to each other, the strength of the loose coupling depending on the orientation of the magnets with respect to each other, and a rotatable control member having a magnetic element attached to an end of the control member, the control member magnet being rotated to a first position such that a predetermined pole of the control member magnet is located adjacent to the magnets on the first disk causing a magnetic coupling of the magnet on the control member to the magnets on the first disk so that loose coupling and the chaotic motion of the first and second disks are demonstrated.

REFERENCES:
patent: 3817518 (1974-06-01), Routson
patent: 4169983 (1979-10-01), Felder
patent: 4673369 (1987-06-01), DiPietro
patent: 5376862 (1994-12-01), Stevens
"Magnetic Circus-Activity Center," The New Curiosity Shop, 1993.
"Magnetic Circus at a McDonald's Restaurant," the New Curiosity Shop, 1994. (two fliers).

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