Patent ID: 7204777

Claim:
A transmission comprising: a shaft; a plurality of power adjusters distributed radially about the shaft, each power adjuster having a tiltable axis about which it rotates; an input disc in contact with the power adjusters; an output disc in contact with the power adjusters; an idler coaxial with and rotatable about the shaft, the idler in contact with the power adjusters; a thrust washer coaxial with the idler, the washer having a first side facing the input disc and having a set of thrust ramps formed on the first side; a set of thrust-receiving ramps formed on the input disc facing the thrust washer; and a plurality of thrust elements in contact with the thrust ramps and the thrust-receiving ramps; and a ball spline structure having ball spline units that connect the shaft to one of the input or output discs, each ball spline structure having a ball gripped by a pair of spline grooves.