{TAIL ~ The actuator} has 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 {HEAD ~ the body} 
{ TAIL ~ The actuator } has 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 { HEAD ~ the body }
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 OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD