Direct current motor

Details Direct current motor Direct current motor

1978-03-08

1980-09-02

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310224, H02K 110

Patent

active

042208823

ABSTRACT:
A direct current motor having interpoles mounted therein. The motor comprises a circular-shaped yoke, two main magnetic poles equidistantly disposed inside of the yoke and with their polarities different from each other, an armature, having armature windings wound thereon, which is actuated by an electromotive force caused by the main magnetic poles and which is rotated in the magnetic field generated by the main magnetic poles, and interpoles which are disposed at positions located between the two main magnetic poles so as to face the armature windings. Each of the interpoles comprises three small poles which are disposed inside of the yoke and are magnetically insulated from the yoke. As a result of this construction magnetic circuits are formed between the adjacent two small poles of each interpole and the armature.

REFERENCES:
patent: 665586 (1901-01-01), Siemens et al.
patent: 688340 (1901-12-01), Roth
patent: 1523004 (1925-01-01), Doherty
patent: 3296472 (1967-01-01), Fisher
patent: 3441760 (1969-04-01), Collens
patent: 3445702 (1969-05-01), Silva

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