Patent ID: 6875151

Claim:
A half-toroidal continuously variable transmission, comprising: a first disk including an inner surface and supported in such a manner as to be rotatable and shiftable in the axial direction thereof; a second disk including an inner surface and supported concentrically with said first disk in such a manner that, with said inner surface thereof opposed to said inner surface of said first disk, said second disk is rotatable independently of said first disk but is prevented from shifting in the axial direction thereof; a pressing device for pressing said first disk toward said second disk; a plurality of trunnions each including in the two end portions thereof two first pivot shafts respectively situated at twisted positions with respect to the center axes of said first and second disks, each of said trunnions being swingable about said first pivot shafts; a pair of support plates for supporting said first pivot shafts of each of said trunnions; a plurality of power rollers interposed between said inner surfaces of said first and second disks in such a manner as to be rotatably supported on said trunnions; and, a pair of swing brackets each including a second pivot shaft parallel to said first pivot shaft of each of said trunnions, said swing brackets being respectively supported so as to be swingable about axes of said second pivot shafts with respect to said support plates, wherein said first pivot shafts of each of said trunnions are respectively supported so as to be swingable with respect to said support plates through said swing brackets, and the trunnions configured to rotate relative to the swing brackets about axes of the first pivot shafts.