Golf club

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United States of America Patent

PATENT NO 9901790
SERIAL NO

14950988

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A club includes a head, a shaft, and a grip. A club length L1 is 43 inches or greater and 48 inches or less. A ratio (Wh/Wc) between a head weight Wh and a club weight Wc is equal to or greater than 0.70. An inertia moment Ix about swing axis is 6.90×103 (kg·cm2) or greater and 7.50×103 (kg·cm2) or less. A static moment Mt (kg·cm) of the club is equal to or greater than 16.3 (kg·cm). The frequency of vibration of club is 240 (cpm) or greater and 280 (cpm) or less. The inertia moment Ix (kg·cm2) is calculated by Equation (1):

description='In-line Formulae' end='lead'Ix=Wc×(Lc+60)2+Ic  (1).description='In-line Formulae' end='tail'

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First Claim

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Patent Owner(s)

Patent OwnerAddress
SUMITOMO RUBBER INDUSTRIES LTDKOBE CITY JAPAN'S HYOGO CENTRAL FLANK BANG TOWN 3 CHOME 6 NO 9 KOBE-SHI HYOGO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakamura, Takashi Kobe, JP 845 11645

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