Electric motor with magnetic enhancement

Details Electric motor with magnetic enhancement Electric motor with magnetic enhancement

1986-06-04

1988-03-01

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Linear

310 49B, 310181, 310154, H02K 4100

Patent

active

047288302

ABSTRACT:
Iron surfaces of stator poles, rotor periphery, or both stator poles and rotor periphery, of stepping motors are manufactured without teeth. The stepping effects of teeth are obtained by bonding, to the toothless surfaces, webs composed of fluted magnetic material having alternate thin and thick sections magnetized in the direction of the thickness of the material and carrying soft magnetic inserts in the flutes. The inserts form virtual teeth. The thick sections are magnetized in the direction opposite to the thin section and the flutes extend in the direction transverse to the direction of relative motion between rotor and stator.

REFERENCES:
patent: 3553508 (1971-01-01), Stecherbatcheff
patent: 4563602 (1986-01-01), Nagasaka

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