Patent ID: 8602908
Filing Date: 2013-12-10
Classification: A63B

Abstract:
1. A golf club shaft formed by curing a wound prepreg, the golf club shaft comprising: a main body layer having a full length layer provided over a full length of the shaft, wherein when a layer positioned on the outermost side in the full length layer is defined as a full length outermost layer, the full length outermost layer has an exposure layer exposed to an outer surface of the shaft; and a tip reinforcing layer provided on an outermost layer, wherein a prepreg for the tip reinforcing layer has a portion having a larger circumferential direction width toward a tip side and the prepreg for the tip reinforcing layer has a thickness Pt of 0.06 mm or greater and 0.12 mm or less and an edge of the tip reinforcing layer extends spirally, wherein the golf club shaft is subjected to surface polishing so that a height h (a) when the height h wherein, when a thickness of said exposure layer on the shaft before the surface polishing is defined as Qt