{HEAD ~ The actuator} has {TAIL ~ at least one pair} of wings which extend from the actuator body, wherein the entire lower edge of each wing curves continuously outwardly and upwardly from the body 
{ HEAD ~ The actuator } has { TAIL ~ at least one pair } of wings which extend from the actuator body , wherein the entire lower edge of each wing curves continuously outwardly and upwardly from the body
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH