Patent ID: 6429611
Filing Date: 2002-08-06
Classification: H02K

Abstract:
A rotary and linear motor having a rotor and a motor casing, said rotary and linear motor, comprising:(a) a rotor of permanent magnetic material having at least one north magnetic pole and one south magnetic pole, said north and said south magnetic poles being transverse to an axis of rotation of said rotor, said rotor mounted within said motor casing both for rotation and for movement along the axis of rotation of said rotor; (b) a plurality of multi-phase stator coils spaced around an interior surface of said motor casing, positioned to be cut by a magnetic field of said rotor as said rotor rotates; and (c) a rotary and linear motor control circuit coupled to said stator coils and operative to control the current through said stator coils so that a magnetic field of said stator coils produced by said current interacts with the magnetic field produced by the permanent magnet poles of said rotor to produce both a torque and a linear force on said rotor.