Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1999-04-20
2000-11-14
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
335298, 335306, 324319, 324320, G01R 3320, H01F 702
Patent
active
061475785
ABSTRACT:
An open yoked magnetic apparatus for producing a substantially homogenous magnetic field. The apparatus includes an open ferromagnetic yoke, and two complementary permanent magnetic assemblies attached to opposing sides of the yoke. Each magnet assembly includes a ferromagnetic pole-piece and a first magnetic structure disposed between the pole-piece and the yoke, at least one annular ferromagnetic collimator concentric with said pole-piece and radially separated therefrom by a gap, and at least a second magnetic structure radially separated from the first magnetic structure by a gap and disposed between the at least one collimator and the yoke. The magnetic structures may be solid structures made from magnetic material or may be segmented or may include a plurality of magnetic blocks. A method for designing such an open yoked magnetic apparatus with improved properties is also disclosed.
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Katznelson Ehud
Panfil Shimon
Barrera Raymond
Donovan Lincoln
Odin Technologies Ltd.
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