Patent ID: 7081698
Filing Date: 2006-07-25
Classification: H02K

Abstract:
1. A motor comprising: a stator having two electromagnetic poles diametrically oppose each other; a rotor including a rotor core rotatably mounted with a shaft, said rotor core being formed by stacking a plurality of laminations which has a central bore and a plurality of T shaped teeth which are radially extending; and a commutator being mounted on said shaft, said commutator being delivered electric power from brushes and connected to said rotor core, wherein said plurality of T shaped teeth form salient poles of said rotor core, and wherein said stator and said rotor have geometric attributes such that: wherein G is defined as thickness of a field yoke, R1 is defined as a distance from a center of said central hole to an end of a groove which separates said plurality of T shaped teeth.