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