Patent ID: 6902509

Claim:
A toroidal type continuously variable transmission, comprising: a casing; input and output discs supported within said casing coaxially with each other and capable of being rotated independently in a condition that inner surfaces of said discs are opposed to each other; an even number of four or more pivot shafts disposed coaxially with or parallel with each other between said input disc and said output disc at twisted positions where said pivot shafts do not intersect with a central axis of said discs but extend toward directions perpendicular to the central axis, said pivot shafts being supported by a pair of yokes immovably secured to said casing; a plurality of trunnions rockable around said pivot shafts; displacement shafts protruded from inner surface of said trunnions; a plurality of power rollers rotatably supported around said displacement shafts and interposed between the inner surface of said input disc and the inner surface of said output disc; a plurality of actuators provided in a same number as said trunnions and operative to displace said trunnions along axial directions of said pivot shafts; and a synchronizing mechanism operative to mechanically synchronize the displacement movements of said trunnions along the axial directions of said pivot shafts effected by said actuators; wherein said synchronizing mechanism comprises: receiving pieces having proximal ends secured to tip ends of drive rods capable of being displaced axially by said actuators to displace said trunnions along the axial directions of said pivot shafts; and a rocking arm having ends engaged by said receiving pieces to be merely rocked and a central portion pivotally supported by a second pivot shaft as a fixed portion arranged in parallel with a rotational center line of the discs.