Patent ID: 6249071
Filing Date: 2001-06-19
Classification: F04D,H02K

Abstract:
A rotor drive motor comprising:a housing;a circumferential array of blades, radially extending from said hub, said hub rotatably mounted in said housing;each blade being circumferentially spaced from adjacent blades and comprising a permanently magnetized radially outer portion with a radial orientation of opposite poles which orientation for each blade is opposite to the orientation of respective adjacent blade radially outer portions,each blade having a leading edge and a trailing edge and said magnetized radially outer portion is bound by said leading edge;at least two stators each including a U-shaped ferromagnetic core defined by a pair of generally radially extending circumferentially spaced legs connected by a circumferentially extending section and a coil wound on said center section of said core, said core legs each extending approximately radially inwardly to a distal end spaced radially outwardly from said outer portion of said rotor blades; andwherein the circumferential width of each said distal end of each said core legs is less than the circumferential width of said magnetized radially outer portion of each blade, anda power supply for electrically energizing each of said stator windings successively as each blade rotates past a trigger point for each stator coil so as to generate torque acting so as to tend to produce rotation of said rotor by the interaction of the magnetic fields of said permanently magnetized blades and said stator coils.