Patent ID: 6875127
Filing Date: 2005-04-05
Classification: A63B

Abstract:
1. A golf club shaft, composed of a laminate of prepregs made of a fiber reinforced resin, wherein a weight of a unit length of said golf club shaft in an axial direction thereof is set to not less than 0.25 g/cm nor more than 0.60 g/cm; and if tensile moduli of elasticity of all of said reinforcing fibers of said prepregs of a straight layer, which are parallel with said axial direction of said golf club shaft, are sequentially denoted by N1, N2, . . . Nn in the order from an innermost layer of said laminate to an outermost layer thereof, then N1≧N2≧Nn and N1>Nn is established in a range at least 10% of a whole length of said golf club shaft, wherein n is an integer not less than 3, and wherein at least three different prepreg layers each having different moduli of elasticity are present of said prepregs which form a straight layer with fibers parallel with said axial direction of said golf club shaft.