217510 ⎘
Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating armatures and stationary magnets with armatures rotating within the magnets with homopolar co-operation
Brushless motor-generator having a spherical stator and spherical windings with displaced poles
#2DC motor-dynamo
#3HOMOPOLAR ENERGY CONVERSION MACHINE
#4Electric current generator/motor with dual stationary/rotating stators and rotor having horseshoe magnet/electromagnetic coils
#5DC Homopolar Generator with Drum Wound Air Coil Cage and Radial Flux Focusing