means including {HEAD ~ a single motor} for imparting {TAIL ~ rotation} to both said fan blade and said rotatable means 
for imparting
means including { HEAD ~ a single motor } for imparting { TAIL ~ rotation } to both said fan blade and said rotatable means
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH