Patent ID: 7268458

Claim:
A stator adapted for driving rotation of a rotor, said stator comprising: a stator body having a surrounding wall surface that surrounds a stator axis; a plurality of angularly displaced magnetic pole protrusions protruding radially from said surrounding wall surface relative to said stator axis, each of said magnetic pole protrusions having an outer periphery, two opposite axial ends, and two opposite radial ends, and further having a recess formed inwardly from said outer periphery and extending from one of said axial ends toward the other of said axial ends and further extending radially between said two radial ends; a plurality of stator coils respectively wound around said magnetic pole protrusions; and a signal transmission unit electrically coupled to said stator coils; wherein each of said stator coils has an inner conducting end that is accessible from said recess of the respective one of said magnetic pole protrusions, thereby facilitating coupling of said inner conducting end to said signal transmission unit, and an outer conducting end opposite to said inner conducting end and electrically coupled to said signal transmission unit.