Golf club
AssigneeSumitomo Rubber Industries, Ltd.
InventorsNaoyoshi Ueda, Masahiko Ueda, Yasushi Sugimoto, Takashi Nakamura, Seiji Hayase, Wataru Kimizuka
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AssigneeSumitomo Rubber Industries, Ltd.
InventorsNaoyoshi Ueda, Masahiko Ueda, Yasushi Sugimoto, Takashi Nakamura, Seiji Hayase, Wataru Kimizuka
Estimating the term…
A golf club 2 includes a head 4, a shaft 6, and a grip 8. A club inertia moment about a swing axis is defined as Isw. A club inertia moment about a grip end is defined as Ige. Ige is 2760 (kg·cm2) or greater and less than 2820 (kg·cm2). Isw/Ige is equal to or less than 2.42. A club weight is defined as Wc (kg), an axial direction distance from the grip end to a center of gravity of the club is defined as Lc (cm), and a club inertia moment about the center of gravity of the club is defined as Ic (kg·cm2). Isw is calculated by Equation (1) below. Ige is calculated by Equation (2) below. Isw=Wc×(Lc+60)2+Ic (1) Ige=Wc×(Lc)2+Ic (2)
A golf club comprising:
Dependencies are inferred from the claim text.