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US 2010/0062876 A1Published application
Golf ball
AssigneeBridgestone Sports Co., Ltd.
InventorsHirotaka Shinohara, Hiroshi Higuchi
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AssigneeBridgestone Sports Co., Ltd.
InventorsHirotaka Shinohara, Hiroshi Higuchi
Estimating the term…
The invention provides a multi-piece solid golf ball having a core of at least one layer, a cover of at least two layers which includes an inner cover layer and an outermost cover layer, and a plurality of dimples formed on a surface of the ball. The thickness and Shore D hardness of the outermost cover layer are set in specific ranges, the thickness and Shore D hardness of the inner cover layer are set in specific ranges, and the ball surface has, as expressed in the Lab color system defined by JIS Z-8730, a lightness L value of at least 89, an a value of at least 2 but not more than 10, and a b value of −20 or above. The multi-piece solid golf ball of the invention increases the reddish coloring of a white golf ball, thereby enhancing the stylishness of the ball and improving the way the ball looks and feels to the golfer when it is played.
A multi-piece solid golf comprising a core of at least one layer, a cover of at least two layers which includes an inner cover layer and an outermost cover layer, and a plurality of dimples formed on a surface of the ball, wherein the outermost cover layer has a thickness of from 0.5 to 1.8 mm and a Shore D hardness of from 40 to 65, the inner cover layer has a thickness of from 0.5 to 4.0 mm and a Shore D hardness of from 40 to 70, the outermost cover layer is softer than the inner cover layer, and the ball surface has, as expressed in the Lab color system defined by JIS Z-8730, a lightness L value of at least 89, an a value of at least 2 but not more than 10, and a b value of −20 or above.
A multi-piece solid golf comprising a core of at least one layer, a cover of at least two layers which includes an inner cover layer and an outermost cover layer, and a plurality of dimples formed on a surface of the ball, wherein the outermost cover layer has a thickness of from 1.0 to 2.3 mm and a Shore D hardness of from 50 to 65, the inner cover layer has a thickness of from 0.5 to 4.0 mm and a Shore D hardness of from 30 to 60, the outermost cover layer is harder than the inner cover layer, and the ball surface has, as expressed in the Lab color system defined by JIS Z-8730, a lightness L value of at least 89, an a value of at least 2 but not more than 10, and a b value of −20 or above.
Dependencies are inferred from the claim text.