Patent ID: 7361108

Claim:
A continuously variable transmission having an input side and an output side and comprising: two conical disk pairs on the input side and two conical disk pairs on the output-side; two endless torque-transmitting means disposed in parallel and extending between and connecting together the input side conical disk pairs and the output side conical disk pairs; wherein the conical disk pairs each have asymmetrical conical angles; wherein the two conical disk pairs on the input side and the two conical disk pairs on the output-side each include two outer, axially-fixed conical disks and two axially-displaceable inner conical disks positioned between the outer, axially-fixed conical disks, wherein the inner conical disks have a cone angle of between about 10° and about 30°; including a plurality of centrifugal weights and a transmission disk positioned between the axially-displaceable conical disks, wherein the transmission disk includes spiral grooves for transforming radial movement of the centrifugal weights into rotational movement of the transmission disk, and a thread provided at an inner diameter of the transmission disk for transforming the rotation of the transmission disk into an axial movement of the axially-displaceable conical disks relative to each other.