Skip-On Skippin’ Stones are composed of sand held together by a non-toxix binder. They disolve back into sand within three months of being skipped.They generated a lot of controversy as the rules require allow “natural” stones to be skipped. (Photo courtesy of D. Glovak).
United States Patent 4212462 was filed in 1978 for the stones which were manufactured by A. D. Design Services Inc.
The spirit and scope of this concept relates to implements having both aerodynamic and hydromechanical properties and, in particular, to an aerodynamic hydroplaning disc with a solid unitary body to be thrown through the air and to hydroplane over a body of water for use in hydroplaning disc games.
