Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1995-04-12
1996-06-04
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
29607, H01F 4102, H01F 702
Patent
active
055237312
ABSTRACT:
A simplified method of making permanent magnet structures, such as magic rings and magic spheres, from a uniformly magnetized permanent magnet shell. Thus, through the inventive method, building such structures requires only one remanence. For example, to make a magic ring providing a uniform internal magnetic field that can be accessed through non-distorting ports, a uniformly magnetized cylindrical shall is cut into ultra-thin washer shaped pieces. One half of the washer shaped pieces are radially cut into pie shaped pieces. The pie shaped pieces of each sliced-up washer-shaped piece are then rotated or transposed to form ultra-thin magic ring slices. The magic ring slices are then alternately stacked with the remaining washer shaped pieces to form a magic ring having predetermined regions wherein the shell magnetization is zeroized. Thus, the shell material in these regions can be removed to provide distortion-free access to the internal field. Similarly, a magic sphere structure can be formed from a single remanence material, as well as others.
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Barrera Raymond M.
DiGiorgio James A.
Picard Leo P.
The United States of America as represented by the Secretary of
Zelenka Michael
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