Composite magnet and magnetic circuit
OwnerKishore Tarachandinventor
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Abstract
Disclosed herein is a composite permanent magnet and a circuit which employs a plurality of such magnets. The composite magnet combines discrete sections of a first magnet material with at least one discrete section of a second magnetic material. The first material has a high residual magnetic strength and a moderate energy product. The second material is many times more expensive than the first material and is characterized by a high residual magnetic strength and a high energy product. Also disclosed is a circuit combining a plurality of such composite magnets. The circuit combines the above magnets in such a way that there is a reduction in magnetic leakage in the circuit.
Claims7
A composite magnet comprising:
- at least a first discrete section of a first magnetic material, having
- a high residual magnetic strength, and
- an energy product greater than 3 million G-Oe;
- a second discrete section of a second magnetic material comprising at least 1/3 of the composite and
- dissimilar to the first material,
- having a high residual magnetic strength,
- at least a high energy product greater than 15 million G-Oe;
- an intrinsic coercive force (H.sub.ci) greater than 3000 Oe,
- the first material in contact with the second and the first material surrounding at least 30% of the surface area of the second material.
Dependencies are inferred from the claim text.