Importance

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Abstract

A bowling ball having hard and inflexible flake materials arranged in a substantially interlocking relationship and located at or just below the outer surface of the bowling ball to form a substantially continuous interlocking armored layer about the bowling ball which causes it to have an appreciably greater resistance to penetration by a Shore D Hardness test needle than a bowling ball of identical composition but without the flake type materials. Sufficient resistance to penetration by the Shore D Hardness test needle gives a durometer hardness of at least seventy-two. The flake materials have an average size of from -100 mesh to 40/100 mesh and comprise between one to ten percent by volume of the bowling ball's outer shell admixture. Further, the outer surface of the bowling ball may be pitted by including dissolvable particles and collapsible hollow particles in the outer shell and given microscopic protrusions due the addition of soft resilient particles and hard inflexible particles in the outer shell of the bowling ball all of which are sufficiently small to allow the ball to roll upon the bowling lane without appreciable discontinuities in forward motion and without appreciable damage to said bowling lane. Further, the angular momentum and hooking action of the bowling ball is affected by adding particles with a density at least twenty percent greater than the density of the substrate in the outer shell or by placing particles capable of reducing the weight by volume of the outer shell by at least five percent.

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First Claim