A cable transportation system cable return pulley has a hub, which is configured to rotate about an axis of rotation and has a plurality of lateral coupling sides lying along respective coplanar straight lines crosswise to the axis of rotation; and a main body, which is coupled to the hub, has an annular seat configured to house the cable, and a quantity of sectors equal to the quantity of lateral coupling sides of the hub, and wherein each sector is coupled to the hub and to the adjacent sectors solely along two of the straight lines.

A cable transportation system cable return pulley has a hub, which is configured to rotate about an axis of rotation and has a plurality of lateral coupling sides lying along respective coplanar straight lines crosswise to the axis of rotation; and a main body, which is coupled to the hub, has an annular seat configured to house the cable, and a quantity of sectors equal to the quantity of lateral coupling sides of the hub, and wherein each sector is coupled to the hub and to the adjacent sectors solely along two of the straight lines.

A variety of transmission mechanisms are provided that include radially inverted pulleys that are nested within each other or otherwise overlap in order to exert inward forces onto a compressive belt that transmits power between the pulleys. By exerted forces inward onto the belt, the belt can be subjected to net compression everywhere along its length. This allows the belt to be less complex and to have a lower cost than belts of transmissions that exert forces outward from pulleys onto a belt, thus requiring expensive and technically challenging belt packs or other elements to sustain the longitudinal tensions experienced by such belts, even when such belts are operated as push belts. Transmissions that include such radially inverted pulleys can exhibit reduced size and cost and increased power capacity compared to transmissions that employ non-radially inverted pulleys.

The present invention relates to a split rim assembly pulley and a manufacturing method thereof, the split rim assembly pulley comprising: a hub coupled to a shaft; a plurality of arms arranged radially around the hub; a plurality of split rims arranged in a circle to form a plurality of unit rings that are stacked on each other and coupled to the other end of each of the arms to form a rim that is concentrically fixed to the hub; and a plurality of fastening members fastened to the plurality of split rims so as to maintain the state in which the split rims form the rim.

The present invention relates to a split rim assembly pulley and a manufacturing method thereof, the split rim assembly pulley comprising: a hub coupled to a shaft; a plurality of arms arranged radially around the hub; a plurality of split rims arranged in a circle to form a plurality of unit rings that are stacked on each other and coupled to the other end of each of the arms to form a rim that is concentrically fixed to the hub; and a plurality of fastening members fastened to the plurality of split rims so as to maintain the state in which the split rims form the rim.