Direct current motor

Details Direct current motor Direct current motor

1979-11-20

1984-03-27

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310216, H02K 110

Patent

active

044397038

ABSTRACT:
A direct current motor comprising: a yoke; an armature; a plurality of main magnetic poles equidistantly spaced around the inner circumference of the yoke, and each of which has a wide portion and a narrow portion, the air-gap between the armature and the main magnetic poles being narrow at the center and ends of the wide portion, and at the center of the narrow portion, and being wide at the intermediate of the wide portion, and at the ends of the narrow portion, and a plurality of interpoles, such as E-shaped interpoles, which are disposed at positions located between the adjacent narrow portions of the main magnetic poles.

REFERENCES:
patent: 2303293 (1942-11-01), Thomar
patent: 2394075 (1946-02-01), Kimball
patent: 3576456 (1971-04-01), De Wolf
patent: 4220882 (1980-09-01), Kohzai et al.
patent: 4374337 (1983-02-01), Kohzai et al.

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