Patent ID: 8764509

Claim:
A yoyo, comprising: a first yoyo side, comprising: a first yoyo half; and a first sidecap, coupled to the first yoyo half; a second yoyo side, comprising: a second you half; a second sidecap, coupled to the second yoyo half; a central bearing disposed between the first and second yoyo halves configured for being attached to a string, the central bearing having an inner race connected to the first and the second yoyo sides and an outer race which rotates independently of the inner race; a first side bearing, having an inner race connected to the first yoyo half and an outer race connected to the first sidecap; a second side bearing, having an inner race connected to the second yoyo half and an outer race connected to the second sidecap; a long bolt, comprising a long cylindrical threaded shaft, and a bolt head of the long bolt; wherein the long bolt is configured for traversing an orifice of the first side bearing, and traversing an orifice of the central bearing, so that the bolt head of the long bolt pushes the first side bearing against a surface of the first yoyo half and the long bolt shaft is configured for being screwed into a threaded orifice of the second yoyo half thereby connecting the first yoyo half to the second yoyo half; a short bolt, comprising a short cylindrical threaded shaft, and a bolt head of the short bolt, the short bolt configured for traversing an orifice of the second side bearing, so that the bolt head of the short bolt pushes the second side bearing against a surface of the second yoyo half; wherein the short shaft is configured for being screwed into a threaded orifice of the second yoyo half; wherein the second side cap is attached to the second side bearing thereby connecting the second side cap to the second yoyo half; wherein the first side cap is attached to the first side bearing thereby connecting the first side cap to the first yoyo half; wherein the first and second yoyo halves are configured rotate together in sync, and the first and second sidecaps are configured to rotate about the yoyo's main axis independently of the first yoyo half.