Magnetic coupling

Details Magnetic coupling Magnetic coupling

1996-09-05

1998-02-03

Gellner, Michael L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 92, 310103, 310106, 192 843, 53317, 533315, B67B 320

Patent

active

057148201

ABSTRACT:
A magnetic coupling includes a cylindrical housing, a spindle, an adjusting plate, two pairs of permanent magnet discs, two hysteresis material discs, and a screw member. The spindle is rotatably supported at its axial position by the housing. The adjusting plate is rotatably supported by the spindle to partition an interior of the housing into two sections in a direction of the spindle. The two pairs of permanent magnets are provided in the two corresponding sections to respectively oppose each other. One of each pair of permanent magnet discs is fixed in the housing and the other thereof is fixed to the adjusting plate. Each permanent magnet disc has magnetic poles with polarities that alternate in a circumferential direction. The hysteresis material discs are fixed to the spindle and arranged between the corresponding pairs of permanent magnet discs at a predetermined gap. The screw member fixes the adjusting plate to the housing. When the adjusting plate which is released is pivoted, the mutual positional relationships between the respective opposing magnetic poles of the two pairs of permanent magnet discs are adjusted simultaneously.

REFERENCES:
patent: 4674264 (1987-06-01), Ellis et al.

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