a limiting element for limiting {HEAD ~ rotational displacements} of the second coupling element with {TAIL ~ respect} to the first coupling element; and 
a limiting element for limiting { HEAD ~ rotational displacements } of the second coupling element with { TAIL ~ respect } to the first coupling element ; and
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH