Rotary electric device

Details Rotary electric device Rotary electric device

1977-03-21

1979-02-27

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 82, 310231, H02K 3700

Patent

active

041421191

ABSTRACT:
An electric motor having a low speed shaft that rotates at a speed much slower than the speed of a high speed shaft comprises a stator having a cylindrical bore with a longitudinal axis and a rotor that carries the low speed shaft and rotates in the bore eccentrically about the axis so that there is contact and no magnetic gap between a relatively small portion of the rotor periphery and the periphery of the bore. A magnetic field, rotating at the speed of the high speed shaft, is applied to the periphery of the bore. The field has longitudinally extending magnetic field components of opposite polarity so that around approximately 180.degree. of the bore the field extends in a first direction, while around the other 180.degree. of the bore the field extends in the opposite direction. The rotor includes permanent magnet pole faces at opposite ends of the bore.

REFERENCES:
patent: 271502 (1883-01-01), Millar
patent: 2378668 (1942-06-01), Vickers
patent: 2378669 (1945-06-01), Vickers
patent: 2413805 (1947-01-01), Vickers
patent: 2454359 (1948-11-01), Vickers
patent: 2547165 (1951-04-01), Mladek
patent: 2703370 (1958-03-01), Steensen
patent: 2857536 (1958-10-01), Light
patent: 3334253 (1967-08-01), Hill
patent: 3452227 (1969-06-01), Welch
patent: 3539846 (1970-11-01), Jewell
patent: 3558944 (1971-01-01), Verge
patent: 3751698 (1973-08-01), Walker
patent: 3770997 (1973-11-01), Presley
patent: 3786287 (1974-01-01), Stein
patent: 3870914 (1975-03-01), Walker

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