Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1995-04-17
1997-04-22
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
335302, 324319, H01F 100, H01F 702, G01V 300
Patent
active
056232411
ABSTRACT:
A permanent magnet structure includes a generally shaped frame made of a magnetic material and a pair of opposite polarity magnet members mounted on the opposed surfaces of the legs of the U. The connecting element of the U which connects the legs, is disposed at a sufficient distance from the magnets so that the resulting magnetic field passes substantially entirely between the magnets and through the arms and so that no substantial eddy currents are induced in the connecting element during imaging. Between the connecting element and the magnets, there is disposed a non-conductive, non-magnetic separating member which contacts the two arms and tends to keep them apart. The separating member is so positioned relative to the connecting member and the magnets that effects of the force between the two magnets and the force produced by the magnetic field passing through the arms and connecting element are counterbalanced. This results in a structure which is mechanically stable.
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Magna-Lab Inc.
Picard Leo P.
Ryan Stephen T.
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