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US 3,933,536 AGranted
Method of making magnets by polymer-coating magnetic powder
AssigneeGeneral Electric Company
InventorsManfred Doser, Daniel Edwin Floryan
Life of this patent
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Abstract
Magnets are produced by dissolving in a solvent organic polymer which is a binder for magnetic powder, adding a magnetic powder to the solution, then adding to the solution a vehicle in which the polymer is insoluble. The vehicle is added until the polymer has precipitated onto the magnetic particles. These coated particles are then dried and hot pressed within an orienting magnetic field to produce the magnet.
Claims5
The method of making a permanent magnet which comprises:
- dissolving in a solvent an organic polymer which is a binder for magnetic particles;
- adding particles of magnetic powder to the resulting solution;
- adding to said solution a vehicle in which said polymer is insoluble until the polymer precipitates onto the particles;
- and
- hot pressing the polymer-coated particles into a compact to form a magnet.
2 more elements
Dependencies are inferred from the claim text.