Patent ID: 8795110

Claim:
A disk set arrangement for a chain CVT with a function-optimized disk set contour, said disk set comprising: a first drive disk set and a second driven disk set, wherein each of the disk sets of the disk set arrangement includes two disks mounted on a respective shaft and one of the disks of each disk set is axially movable relative to an opposed axially fixed disk, a chain having rocker pins that extend between and that contact opposed surfaces of the disks of the disk sets, wherein the rocker pins have longitudinal axes that extend parallel to axes of rotation of the shafts, wherein a curvature of opposed surfaces of the disks of at least of one of the disk sets is defined by a ratio between an eccentricity distance of a center point of a radius defining the disk surface curvature, wherein the eccentricity distance is relative to the longitudinal axis of the associated shaft of the disk surface curvature and the length of the disk set radius of curvature, which ratio lies in a range of from about 0.16 to about 0.20, wherein the eccentricity of the disk surface curvature is determined by a disk surface radius of curvature center point spaced from the axis of rotation of the disks and from which point the curvature of the surfaces of the disks facing one another of the related disk set radius is measured, whereby the disk surface radius of curvature extends across the axis of rotation, and wherein a first curvature of axial ends of the rocker pins is determined by a first ratio between a first eccentricity relative to the longitudinal axis of the rocker pins and a first rocker pin axial end radius of curvature, which ratio lies in a range between about 0.185 and about 0.205, wherein a first rocker pin axial end radius of curvature is measured from a first center point spaced in a radial direction from the rocker pin longitudinal axis, and wherein a second curvature of the axial ends of the rocker pins is determined by a second ratio between a second eccentricity relative to the longitudinal axis of the rocker pins and a second rocker pin axial end radius of curvature in the azimuthal direction, which second ratio lies in a range of from 0 and about 0.015, wherein the second rocker pin axial end radius of curvature is measured from a second center point spaced in an azimuthal direction from the rocker pin longitudinal axis, which azimuthal direction runs perpendicularly to the rocker pin longitudinal axis and perpendicularly to the radial direction of the first center point.