Motor core with winding slots having reduced air gaps

Details Motor core with winding slots having reduced air gaps Motor core with winding slots having reduced air gaps

1987-02-17

1989-03-14

Hall, Carl E.

Electrical generator or motor structure

Dynamoelectric

Rotary

29596, 29598, 29605, 29606, 310 42, 310268, H02K 1502, H02K 348

Patent

active

048126969

ABSTRACT:
A magnet core for a rotor or stator of an electrical machine, e.g. a motor, generator or transformer, comprises a helically wound coil of electric strip having transverse slits extending from one edge across part of its width and being separated by tongues or teeth such that the slits in successive turns of the coil cooperate to define slots extending generally radially of the coil to receive electrical windings. Electrical windings are housed in the slots, and the tongues are bent radially inwards towards the coil axis so as to close the slots at their upper ends to leave substantially no air gap.

REFERENCES:
patent: 3581132 (1971-05-01), Laing
patent: 3802066 (1974-04-01), Barrett
patent: 4064410 (1977-12-01), Roach
patent: 4267719 (1981-05-01), Walker
patent: 4507947 (1985-04-01), Stanley

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