Patent ID: 8149079
Filing Date: 2012-04-03
Classification: F16C,H01F

Abstract:
1. A permanent magnetic levitation display apparatus comprising: a stationary and rigid support structure; a magnetically levitated axle comprising a male and a female part, said female part of said magnetically levitated axle having a cavity, a first axis extending through the center of the cavity, and a plurality of first permanent magnets distributed about a perimeter of the cavity producing a first magnetic field, and said male part of said magnetically levitated axle producing a second rotationally invariant magnetic field around a second axis; said male part of said permanent magnetic male and female levitation support being held in place on said stationary and rigid support structure; a display apparatus attached rigidly to the top of said female part of said magnetically levitated axle; said first part of said magnetically levitated axle and said display apparatus held in place by said stationary and rigid support through contact between said display and said stationary and rigid support structure at one or more points on said first stationary and rigid support structure, the rigid attachment to said female part of said magnetically levitated axle, and the interaction of the magnetic fields produced by said male and said female parts of said magnetically levitated axle; wherein when said first axis of said magnetically levitated axle is at least partially aligned with said second axis, and said first magnetic field of said magnetically levitated axle and said second magnetic field of said magnetically levitated axle simultaneously produce a repulsive force and a restorative force to levitate said first part of said magnetically levitated axle and said display apparatus relative to said second part and to at least partially align said first axis of said magnetically levitated axle with said second axis of said magnetically levitated axle; wherein said female part of said magnetically levitated axle and said display may rotates when acted on by an external torque, maintaining their orientation relative to one another, contact with said stationary and rigid support structure, and separation of the male and female parts of said magnetically levitated axle.