Golf ball
AssigneeBridgestone Sports Co., Ltd.
InventorsHideo Watanabe, Katsunori Sato
Life of this patent
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Abstract
A golf ball for amateur golfers is endowed with both an excellent flight and a good feel at impact that is soft and solid when hit by the average golfer whose head speed is not very high. The golf ball, which includes a core and a cover, has a compressive deformation A when subjected to a final load of 5 kg from an initial load of 0.2 kg that is 0.21 mm or less, a compressive deformation B when subjected to a final load of 30 kg from an initial load of 5 kg that is from 0.72 to 0.90 mm and a compressive deformation C when subjected to a final load of 60 kg from an initial load of 5 kg that is from 1.55 to 1.80 mm.
Claims11
A golf ball comprising a core and a cover, wherein the ball has an amount of compressive deformation such that the compressive deformation A when the ball is subjected to a final load of 5 kg from an initial load state of 0.2 kg is 0.21 mm or less, the compressive deformation B when the ball is subjected to a final load of 30 kg from an initial load state of 5 kg is from 0.72 to 0.90 mm and the compressive deformation C when the ball is subjected to a final load of 60 kg from an initial load state of 5 kg is from 1.55 to 1.80 mm.
A golf ball comprising a core and a cover, wherein the ball has an amount of compressive deformation such that, letting A be the compressive deformation when the ball is subjected to a final load of 5 kg from an initial load state of 0.2 kg, B be the compressive deformation when the ball is subjected to a final load of 30 kg from an initial load state of 5 kg, C be the compressive deformation when the ball is subjected to a final load of 60 kg from an initial load state of 5 kg and D be the compressive deformation when the ball is subjected to a final load of 130 kg from an initial load state of 10 kg, D has a value of from 2.80 to 3.40 mm, the ratio D/C is from 1.80 to 1.90, the ratio D/B is from 3.65 to 4.20 and the ratio D/A is from 16.0 to 25.0.
Dependencies are inferred from the claim text.