Short distance golf ball
AssigneeMacGregor Golf Company
InventorsTroy L. Puckett, Lauro C. Cadorniga
Life of this patent
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Abstract
A one-piece short distance golf ball has a dense outer skin and a cellular core structure. The golf ball is the same size as a conventional ball (approximately 1.68 inches in diameter), is approximately half the weight of a conventional ball (15-35 grams), and plays approximately half as far as a conventional ball. The short distance golf ball is a lively ball with a rebound between 50% and 80%. The golf ball comprises a foam-molded thermoplastic polymer (approximately 100 parts) and a filler (approximately 0.5 to 15 parts). The thermoplastic polymer is Surlyn, and the filler material is preferably glass bubbles having a density between 0.12 and 0.18 grams per cubic centimeter. In addition the golf ball may have a brambled surface which helps the ball resist the effects of cross winds.
Claims11
A one-piece golf ball in the shape of a sphere having a center, a radius, and a surface, and comprising a thermoplastic polymer and a filler material wherein the filler material is uniformly distributed in the polymer and the polymer is foam-molded so that the polymer and filler within the ball have a continuously increasing density gradient along the ball's radius from its center to its surface which density gradient is characterized by a relatively dense outer skin and a cellular core, and wherein the ball has a rebound of between 50% and 80%, weighs between 15 and 35 grams, and is 1.68 inches in diameter.
The one-piece golf ball having a center, a radius, and a surface, and comprising a thermoplastic material which is the product of the reaction of an olefin and a metallic salt of an unsaturated monocarboxylic acid and a filler material selected from the group consisting of microscopic glass bubbles, titanium dioxide, and calcium carbonate, wherein the golf ball comprises essentially by weight 100 parts of the thermoplastic polymer and between 0.5 and 15 parts of the filler and wherein the filler material is uniformly distributed in the polymer and the polymer is foam-molded so that the polymer and filler within the ball have a continuously increasing density gradient along the ball's radius from its center to its surface which density gradient is characterized by a relatively dense outer skin and a cellular core and wherein the ball has skin thickness between 0.25 inch and 0.625 inch.
Dependencies are inferred from the claim text.