Games using tangible projectile – Golf – Ball
Patent
1998-07-28
2000-09-26
Chapman, Jeanette
Games using tangible projectile
Golf
Ball
473377, A63B 3704
Patent
active
061236292
ABSTRACT:
A golf ball includes a core and a cover which covers the core, wherein a ratio between the primary natural frequency (CF.sub.1) of the core and the primary natural frequency (BF.sub.1) of the golf ball satisfies a following mathematical relation:
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Sajima Takahiro
Yamaguchi Tetsuo
Yoshida Kazunari
Chapman Jeanette
Gorden Raeann
Sumitomo Rubber Industries Limited
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