Stator for multirotor D.C. magnetic motors

Details Stator for multirotor D.C. magnetic motors Stator for multirotor D.C. magnetic motors

1980-07-21

1982-02-16

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310126, 310154, H02K 2300

Patent

active

043161090

ABSTRACT:
In a high starting torque concentric rotor D.C. magnetic motor the back e.m.f. is greatly reduced by reducing the area of magnetic flux acting on the rotors to an arc of the respective rotor circumference spanning the number of the rotor segments spanned by the respective rotor brush contacting the commutator segments. A pair of parallel magnetic pole plates of opposite polarity are energized by a coil extending therebetween. Both rotors are supported adjacent one pole plate with their axis normal to the pole plate and in axial alignment with the coil. A plurality of equally spaced pole pieces, connected with a respective pole plate, extend in interdigitated relation parallel with the axis of the rotors in the spacing therebetween and in close spaced relation with respect to the inner peripheral portions of the outer rotor and circumferential portions of the inner rotor periphery.

REFERENCES:
patent: 374959 (1887-12-01), Gray
patent: 3723796 (1973-03-01), Mason
patent: 3757149 (1973-09-01), Holper
patent: 3828213 (1974-08-01), Yamashita et al.

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