The transmission ratio is controlled by feeding an actual transmission ratio back to an input of a control circuit for the transmission ratio on {HEAD ~ a basis} of {TAIL ~ a control mechanism} with reference to a desired transmission ratio by adjustment of a holding force of the pivot bearing configuration or its adjustment path 
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The transmission ratio is controlled by feeding an actual transmission ratio back to an input of a control circuit for the transmission ratio on { HEAD ~ a basis } of { TAIL ~ a control mechanism } with reference to a desired transmission ratio by adjustment of a holding force of the pivot bearing configuration or its adjustment path
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH