Golf ball and a method for controlling the spin rate of same
AssigneeAcushnet Company
InventorMichael J. Sullivan
Life of this patent
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Abstract
A golf ball with a precise spin rate is disclosed. The distribution of weight among the layers within the golf ball relative to a centroid radius is realized to precisely control the moment of inertia of the ball. In accordance to one aspect of the present invention, a high spin rate golf ball with a dense center, which is positioned radially inside of the centroid radius, and a low specific gravity mantle is provided. In accordance to another aspect of the present invention, a low spin rate golf ball with an inner core and a thin dense layer disposed radially outside of the centroid radius is provided.
Claims40
A ball comprising an inner core having a specific gravity of greater than 1.8 encased within a first mantle surrounding the inner core, wherein a portion of the first mantle comprises a low specific gravity layer having a specific gravity of less than 0.9, and a cover layer having a specific gravity of less than 0.95.
A ball comprising a thin dense layer encasing a core, wherein the thin dense layer is encased by a cover, wherein the thin dense layer has an inner diameter of at least 38.4 mm and has a specific gravity of greater than 1.2 and a thickness from 0.025 mm to 1.27 mm, and the thin dense layer is positioned at a radial distance outside of the centroid radius.
Dependencies are inferred from the claim text.