Patent ID: 7520832

Claim:
A continuously variable transmission system comprising: a toroidal type continuously variable transmission comprising: at least a pair of disks supported concentrically with each other in a relatively rotatable fashion; a plurality of power rollers held between the pair of disks; a plurality of support members rotatably supporting the plurality of power rollers, respectively; and a hydraulic actuator displacing the support members individually so as to change a gear ratio between the pair of disks; a gearwheel type differential unit comprising a plurality of gearwheels which are engaged each other; and a clutch device which freely connects and disconnects a power transmission path of the continuously variable transmission system, wherein rotary states of an output shaft are freely changed between forward rotation and reverse rotation across a stationary state with an input shaft kept rotating in one direction by a drive source, such the rotary states of the output shaft are obtained by adjusting the gear ratio of the toroidal type continuously variable transmission to change a relative displacement speed of the respective gearwheels of the differential unit, and wherein when a gearshift is operated from a non-running state to a running state, the gear ratio of the toroidal type continuously variable transmission is corrected by a predetermined amount, before the clutch device connecting the power transmission path transmits power in accordance with an operation of the gearshift.