Golf club
AssigneeDunlop Sports Co. Ltd.
InventorTakashi NAKANO
Life of this patent
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Abstract
A golf club 2 includes a shaft 6 having a tip end Tp and a butt end Bt, a head 4 and a grip 8. The shaft 6 includes a plurality of carbon fiber reinforced layers. The layers include a straight layer, a bias layer and a hoop layer. When a weight of the hoop layer is defined as WF, and a shaft weight is defined as WS, WF/WS is 0.18 or greater. The shaft weight WS is 42 g or less. In the shaft 6, a point 200 mm distant from the butt end Bt is defined as P1, and a region between the point P1 and the butt end Bt is defined as a specific butt region Rb. A weight of the hoop layer in the specific butt region Rb is defined as WFb, and a shaft weight in the specific butt region Rb is defined as WSb.
Claims8
A golf club comprising a shaft having a tip end and a butt end, a head, and a grip, wherein
- the shaft has a plurality of carbon fiber reinforced layers,
- the carbon fiber reinforced layers include a straight layer, a bias layer, and a hoop layer,
- when the hoop layer has a weight that is defined as WF, and the shaft has a shaft weight that is defined as WS, WF/WS is equal to or greater than 0.18,
- the shaft weight WS is equal to or less than 42 g.
Dependencies are inferred from the claim text.