Radial magnetic coupling

Details Radial magnetic coupling Radial magnetic coupling

1990-09-13

1993-04-20

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 75D, 335302, 335306, H02K 2112

Patent

active

052045722

ABSTRACT:
A permanent magnet coupling including a rotatable inner member 32, and outer member 12 rotatable about the same axis 14 as the inner member 32, a plurality of magnets 36 each having a nominally trapezoidal cross section, and a plurality of interpole members 34 each having a nominally trapezoidal cross section. The interpole members 34 are disposed circumferentially between adjacent magnets 36. The major bases 38 of the magnets 36 are located on the sleeve-like cylindrically-shaped iron core 16 of the inner member 32. In operation, the side surfaces 48,50 of the permanent magnets 36 wedge between the side surfaces 42 of the interpole members 34 by centrifugal force. This, in turn, prevents the magnets 36 from moving under static or dynamic conditions. Thus, the interpole members 34 restrain the magnets 36 in a similar fashion as the containment ring 30 generally without requiring a containment ring 30.

REFERENCES:
patent: 3488535 (1970-01-01), Baermann
patent: 4120618 (1978-10-01), Klaus
patent: 4163914 (1979-08-01), Keyes
patent: 4371798 (1983-02-01), Kuroda
patent: 4486678 (1984-12-01), Olson

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