Amusement devices: toys – Rotating or having visible rotating portion – Having attached cord for imparting rotation
Patent
1997-05-08
1998-09-29
Hafer, Robert A.
Amusement devices: toys
Rotating or having visible rotating portion
Having attached cord for imparting rotation
A63H 130
Patent
active
058138978
ABSTRACT:
A yo-yo having unique tether engagement areas adjacent the axle. The engagement areas include a starburst pattern of grooves located in the tether-facing surface of each of the yo-yo's side pieces. The grooves extend from a point proximate the axle to a point significantly spaced from the axle. In the preferred embodiment, the grooved engagement area is employed in conjunction with an axle having a ball bearing supported rotatable outer race to which an end loop of the tether is secured.
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Van Dan Elzen Hans W.
Van Dan Elzen Thomas J.
Carlson Jeffrey D.
Gubernick Franklin L.
Hafer Robert A.
Playmaxx, Inc.
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