Variable speed DC motor

Details Variable speed DC motor Variable speed DC motor

1976-11-22

1978-08-29

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310154, 310209, 318538, H02K 112

Patent

active

041106490

ABSTRACT:
A variable speed DC motor contained within a housing having bearing openings at each end, an armature disposed in the housing and pivoted in the bearing openings, the improvement being a first cylindrical field shell surrounding the armature and having a pair of oppositely disposed field pole segments mounted the shell and facing the armature. There is a second cylindrical field shell surrounding the armature and also having a pair of oppositely disposed field pole segments mounted facing the armature. The motor also has a gear means coupled to each of the shells for angularly displacing said first and second shells opposite to each other with respect to the neutral axis of the motor.

REFERENCES:
patent: 3077548 (1963-02-01), Moressee et al.
patent: 3315106 (1967-04-01), Reynst
patent: 3330976 (1967-07-01), Brown
patent: 3360667 (1967-12-01), Gordon, Jr.

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