The invention is {HEAD ~ a dampener} for mounting near {TAIL ~ the end} of a rotatable shaft 
for mounting near
The invention is { HEAD ~ a dampener } for mounting near { TAIL ~ the end } of a rotatable shaft
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH