Patent ID: 7001305

Claim:
A toroidal continuously variable transmission comprising: a housing, input and output side discs coaxially disposed with each other and rotatably relative to each other within said housing, a plurality of trunnions rockable around respective pairs of coaxial pivot shafts located at positions twisted with respect to center lines of said input and output side discs, displacement shafts supported by the respective trunnions, and a plurality of power rollers rotatably supported on said displacement shafts and pinched between inner surfaces of said input and output side discs, wherein inner surfaces of said input and output side discs have in section, arcuate concave surfaces, and peripheral surfaces of the power rollers have spherical convex surfaces which are in contact with said inner surfaces, and traction oil is supplied to contact areas between said inner surfaces of said discs and peripheral surfaces of said power rollers, and wherein nozzle holes are provided for supplying the traction oil, said nozzle holes being rocked as said trunnions are rocked around said pivot shafts so that the traction oil ejected from said nozzle holes is sprayed only onto said discs, at positions circumferentially spaced from positions at which said inner surfaces contact with said peripheral surfaces of said power rollers.