The spring element 44 of FIG 4 is held in the restrained position by {TAIL ~ the shape memory material release mechanism} 48 that has been deformed in the martensitic state to form of a hook or {HEAD ~ loop} 
The spring element 44 of FIG 4 is held in the restrained position by { TAIL ~ the shape memory material release mechanism } 48 that has been deformed in the martensitic state to form of a hook or { HEAD ~ loop }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD