A shutter driving actuator for driving {HEAD ~ a shutter} from the closed position to {TAIL ~ the opened position} when in operation is connected to the shutter 
to
A shutter driving actuator for driving { HEAD ~ a shutter } from the closed position to { TAIL ~ the opened position } when in operation is connected to the shutter
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH