Patent ID: 9539479
Date: 2017-01-10
CPC Classifications: A63B

Claim:
1. A golf club shaft which has a tip end and a butt end, said shaft comprising: full length layers disposed wholly in a longitudinal direction of the shaft; and tip end partial layers disposed on the tip end of the shaft, wherein the full length layers include a bias layer and a straight layer; and the tip end partial layers include an inner glass fiber reinforced layer, and an outer low elastic carbon fiber reinforced layer which is disposed outside the inner glass fiber reinforced layer; wherein the reinforcing fiber of the outer low elastic carbon fiber reinforced layer is a pitch-based carbon fiber; the low elastic carbon fiber has a tensile elastic modulus of equal to or less than 22 ton/mm wherein a weight of the shaft is equal to or less than 55/46 grams per inch of shaft length.