Apparatus for packing permanent magnet powder

Details Apparatus for packing permanent magnet powder Apparatus for packing permanent magnet powder

1990-10-31

1992-08-04

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With direct application of magnetic force to manipulate...

1641471, 164503, 425 78, 425427, 425428, 425431, B29C 4334, B29C 4352

Patent

active

051353750

ABSTRACT:
An apparatus for packing a permanent magnet powder wherein a solenoid coil is provided near the opening of a cylindrical molding space of a mold in such a manner that the direction of the central axis of the solenoid coil substantially coincides with the central axis of the molding space, and an alternating current magnetic field is applied, so that a permanent magnet powder above the opening is packed into the molding space. A magnetic pole may be provided in the center of the solenoid coil. The method of the present invention can be applied to not only a powder for a sintered magnet and cast magnet, but also a powder for a bonded magnet.

REFERENCES:
patent: 3400180 (1968-09-01), Buttner et al.
patent: 3555621 (1968-04-01), Hara
patent: 3556000 (1971-01-01), Goodwin
patent: 3985843 (1976-10-01), Steingroever
patent: 4250128 (1981-02-01), Meekling
patent: 4441875 (1984-04-01), Saito et al.

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