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US 2003/0228936 A1Published application
Three-piece golf ball
OwnerKeiji Moriyamainventor
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OwnerKeiji Moriyamainventor
Estimating the term…
A golf ball according to the present invention is excellent in carry while holding spin performance and shot feeling. A three-piece golf ball according to the present invention comprises a solid center, rubber thread wound on the solid center and a cover for the solid center and the rubber thread, and is characterized in that the ratio (FC/FB) of the primary natural frequency of the solid center (FC) to the primary natural frequency of the golf ball (FB) satisfies the following expression: 0.95≦FC/FB≦1.10 The primary natural frequency of the solid center (FC) is 750 Hz to 1000 Hz, and deformation (mm) from application of a load of 98N to the solid center up to application of a load of 1274N to the solid center is 2.7 to 4.3.
A three-piece golf ball comprising a solid center, rubber thread wound on said solid center and a cover for said solid center and said rubber thread, wherein the ratio (FC/FB) of the primary natural frequency of said solid center (FC) to the primary natural frequency of said golf ball (FB) satisfies the following expression:
Dependencies are inferred from the claim text.