{HEAD ~ The transmission ratio} is set by defining {TAIL ~ a continuously variable pivoted position} of the intermediate roller between the input disk and the output disk 
is set by defining
{ HEAD ~ The transmission ratio } is set by defining { TAIL ~ a continuously variable pivoted position } of the intermediate roller between the input disk and the output disk
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH