An integral field and commutation magnet for use in DC brushless motor has both commutation and field magnet portions. Magnetized segments in both the field and commutation portions have oppositely oriented magnetic fields in the outward radial direction. An apparatus and method for making the one piece...http://www.google.ca/patents/US4494028?utm_source=gb-gplus-sharePatent US4494028 - Integral coaxial commutation and rotor magnets and apparatus and method for making same
