Direct current motor with improved pole piece that reduces coggi

Details Direct current motor with improved pole piece that reduces coggi Direct current motor with improved pole piece that reduces coggi

1980-12-01

1982-07-27

Miller, J. D.

Electrical generator or motor structure

Dynamoelectric

Rotary

310254, H02K 2342

Patent

active

043419690

ABSTRACT:
A direct current motor having pole pieces in the shape of partial cylinders each having an inner surface terminating in a leading and trailing edge. A series of notches are formed along the edges of the pole pieces so that each of the edges alternately slopes toward and away from the center of the inner arc surface of the pole piece.

REFERENCES:
patent: 3469129 (1969-09-01), Humphries
patent: 3663851 (1972-05-01), Persson

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