Abstract: An electromagnetic motor has a rotor rotatable about an axis and having a plurality of electromagnets arranged on its periphery and spaced from one another in a peripheral direction, a stator surrounding the rotor and including a plurality of permanent magnets spaced from one another in a peripheral direction and also spaced from an outer surface of the rotor so that a distance between each of the permanent magnets of the stator and the outer surface of the rotor decreases in direction of rotation of the rotor, and a plurality of metal screening elements each located forwardly of a front end of each permanent magnet of the stator as considered in direction of rotation of the rotor.

Abstract: An electromagnetic stepper motor has a drum-type rotor rotatable about an axis and provided with a plurality of permanent magnets distributed over its circumference, a stator surrounding the rotor and comprising a plurality of permanent magnets and an electromagnet provided on each of the permanent magnets of the stator and connectable with a commutator, wherein each of the electromagnets including a plurality of electromagnet members located one after the other in a circumferential direction so that during an interaction of the permanent magnets of the rotor and the electromagnets of the stator the electromagnet members are switched on one after the other.