Cone pulley arrangement

An infinitely variable cone pulley transmission arrangement which includes a drive input shaft, a drive output shaft, at least a pair of cone pulleys arranged on each shaft, a transmission means circulating between the pairs of pulleys on each shaft, means for connecting each pair of cone pulleys with one another and their associated shaft, means for mounting at least one cone pulley on each shaft for axial displacement relative thereto, a transmission ratio setting means for selectively axially displacing the axially displaceable cone pulleys, and rotary connection means provided at at least one of the pairs of cone pulleys for generating torque dependent and ratio dependent pressing forces between the cone pulleys and the transmission means including a presser device comprising a plurality of pairs of spaced oblique faces of variable gradients lying peripherally opposite one another, rolling means fashioned as ball elements interposed between each of the pairs of oblique faces, an axially mounted support ring arranged on the shaft, said rolling means being supported at least indirectly against an adjacent cone pulley and the support ring, the cone pulley associated with the pressing device is exclusively supported by the presser device, and the presser device is in shape-locking engagement with the ball elements of the rolling means, characterized in that the pairs of oblique faces form channels extending substantially parallel to the axis of the shaft, said channels having an effective oblique face gradient which is modified over the channel length, said ball elements of the rolling means being arranged in said channels so as to be displaceable substantially along the axis of the shaft over the entire transmission ratio, and in that an abutment face means is provided on at least one of the support ring and adjacent cone pulley facing the respective channels for engaging the ball elements of the rolling means.