Rotor for electric machines having a spherical gap for the magne

Details Rotor for electric machines having a spherical gap for the magne Rotor for electric machines having a spherical gap for the magne

1986-09-10

1988-07-19

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 42, 310166, 310197, 310216, 29598, H02K 122

Patent

active

047587580

ABSTRACT:
A rotor for an electric motor with a spherical surface consists of a ring of soft iron and a squirrel cage made preferably from copper. The squirrel cage consists of copper bars lying in spiral grooves and a cooper ring on each axial end of the iron ring, short-circuiting all bars. The pole segments between the grooves do not have pole shoes. A cap made of ferro-magnetic metal covers the windings and acts magnetically in the same way as pole shoes. The cap surrounds the hollow spaces between the ring and the cap. The squirrel cage will preferably be cast by filling the spaces with molten copper during manufacture.

REFERENCES:
patent: 3447496 (1969-06-01), Laing
patent: 4043706 (1977-08-01), Walker
patent: 4051401 (1977-09-01), Hayward
patent: 4352646 (1982-10-01), Laing et al.
patent: 4599530 (1986-07-01), Laing
patent: 4620120 (1986-10-01), Laing

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