Radially periodic magnetization of permanent magnet rings

Details Radially periodic magnetization of permanent magnet rings Radially periodic magnetization of permanent magnet rings

1998-11-05

1999-11-23

Gellner, Michael L.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

H01F 702

Patent

active

059907746

ABSTRACT:
The invention is a magic sphere having an equatorial gap, with a radial metic field in the equatorial gap. The radial magnetic field can flow inward, toward the center of the magic sphere, or outward, away from the magic sphere. In a further embodiment, the magic sphere produces a periodically radial magnetic field. In another embodiment, a magic sphere with an azimuthally periodic radial magnetic field that flows in the outward direction periodically magnetizes a magnetically hard ring in the outward direction. Then, a magic sphere with an azimuthally periodic radial magnetic field that flows inwardly, periodically magnetizes the ring in the inward direction. The result is a permanent magnet that has a radial magnetic field, where the direction of the field periodically alternates from the inward to the outward direction.

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