the linkage assembly further including a retainer operable to transfer forces between {TAIL ~ the actuator lever} to {HEAD ~ the pushbutton} 
the linkage assembly further including a retainer operable to transfer forces between { TAIL ~ the actuator lever } to { HEAD ~ the pushbutton }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD