Yo-yo

A yo-yo comprising:

• a pair of yo-yo body halves each formed as a composite having an inner hub, a central dish-shaped main body portion defining an inward facing surface and an annular-shaped peripheral body portion;
• an axle threadably engaged at each end thereof into a hub thread formed into each said hub along an axis of rotation of said yo-yo;
• each said hub including a shoulder radially adjacent said hub thread which, when said axle is fully tightened in frictional engagement into each said hub thread by tightening rotation between said body halves, bear against one another to define a minimum gap between said inward facing surfaces;
• a bearing having an inner ring tightly frictionally engaged over each said shoulder, each end of said bearing extending into a recess formed into each said inward facing surface to maintain a tether in wrapped engagement around an outer ring of said bearing, said outer ring freely rotatable with respect to said body halves and said axle, said axle rotating with said body halves when said yo-yo is in use;
• said axle, when said body halves are forcibly rotated in an axle disengaging direction one to another, causing a corresponding increase in the width of said gap;
• each said inner facing surface arcuately shaped whereby said gap increases in width radially outwardly from said outer ring;
• each said peripheral body portion formed of material having a weight density substantially higher than that of said body halves.

A yo-yo comprising:

• a pair of yo-yo body halves each formed as a composite having an inner hub, a central dish-shaped main body portion defining an inward facing surface and an annular-shaped peripheral body portion;
• an axle threadably engaged at each end thereof into a hub thread formed into each said hub along an axis of rotation of said yo-yo;
• each said hub including a shoulder radially adjacent said hub thread which, when said axle is fully tightened in frictional engagement into each said hub thread by tightening rotation between said body halves, bear against one another to define a minimum gap between said inward facing surfaces;
• a bearing having an inner ring tightly frictionally engaged over each said shoulder, each end of said bearing extending into a recess formed into each said inward facing surface to maintain a tether in wrapped engagement around an outer ring of said bearing, said outer ring freely rotatable with respect to said body halves and said axle, said axle rotating with said body halves when said yo-yo is in use;
• said axle, when said body halves are forcibly rotated in an axle disengaging direction one to another, causing a corresponding increase in the width of said gap;
• each said inner facing surface arcuately shaped whereby said gap increases in width radially outwardly from said outer ring;
• an annular groove formed into each said inward facing surface radially adjacent to said recess, each said groove, cooperatively acting with a tether wrapped around said bearing outer ring to selectively connect said bearing outer ring with said body halves.