Abstract: A Yo-Yo formed of an axle and a pair of complimentary body segments, disposed in opposed relationship on the axle. Each body segment includes an inner and outer plastic shell having at their peripheries, concentric spaced annular rings which intermesh with each other. The inner shells have holes through which the axle projects. The outer shells each include a central hub with a metal sleeve which receives the end portion of the axle. The weight of the Yo-Yo is disposed essentially in the periphery of the segments by means of the intermeshing annular rings on the shells. A string encompasses an annular groove in the central portion of the axle. Adjacent the central groove, the abutting faces of the inner shells are provided with circumferentially disposed protuberances which snare the string.

Abstract: A Yo-Yo in which opposed circular body segments are respectively, monolithic, being formed of a unitary molded plastic element of generally uniform thickness. The body segments are complimentary, and are joined by an axle. Radiating from the inner end portion of the hub, each body segment is a flat disc which merges with the inner edge of a cylindrical spacer ring. The outer edge portion of the spacer ring an arcuate convex flange which extends over the outer surface of the ring. The inner surfaces of the opposed body segments extend parallel to each other, but then diverge toward the outer periphery to provide additional space for movement of the string without causing precession of the Yo-Yo. In the second embodiment, central caps close the exposed outer surface area of the body segments.