Golf club shaft and golf club using the same
AssigneeDunlop Sports Co. Ltd.
InventorsHiroshi HASEGAWA, Takashi NAKANO
Life of this patent
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AssigneeDunlop Sports Co. Ltd.
InventorsHiroshi HASEGAWA, Takashi NAKANO
Estimating the term…
A golf club shaft extending from a tip end to a butt end and made of fiber reinforced resin, comprises a weight being in a range of from 30 to 55 g, a whole length LS between the tip end and the butt end, a center of gravity of the shaft located with a distance LG from the tip end, a ratio of the distance LG to the whole length LS being in a range of from 0.54 to 0.65, a butt end portion which has a length of 300 mm from the butt end toward the tip end, the butt end portion including fibers including a low elastic fiber having an elastic modulus in a range of from 5 to 20 t/mm2, and a high elastic fiber having an elastic modulus greater than 20 t/mm2 and not more than 50 t/mm2.
A golf club shaft extending from a tip end to a butt end and made of fiber reinforced resin, comprising
Dependencies are inferred from the claim text.