Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1997-10-28
2000-04-25
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
335216, 336229, H01F 600
Patent
active
060549130
ABSTRACT:
An apparatus for creating and controlling a toroidal magnetic field, and a poloidal magnetic field employs a conductive sheet rolled into a spiral with cut outer legs aligned and bent outwardly toward a position approximately adjacent to corresponding other cut outer legs. Such apparatus is formed by forming a conductive sheet; cutting a first plurality of cut outer legs into the sheet; cutting a second plurality of cut outer legs into the sheet; rolling the conductive sheet into a spiral; and bending outwardly each of the cut outer legs. In an alternative, the apparatus has a conductive tube with each of a first plurality cut outer legs bent outwardly to couple to corresponding ones of a second plurality of cut outer legs. Such alternative is made by forming a conductive tube; cutting a plurality cut outer legs at one of the conductive tube; cutting another plurality cut outer legs at another of the conductive tube; bending outwardly the cut outer legs; and coupling ones of the plurality of cut outer leg to corresponding ones of the other plurality of cut outer legs. The above mentioned devices may include a spiral resistive strip or thermally induced resistive spiral in a centerpost region.
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Barrera Raymond
Donovan Lincoln
General Atomics
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