Patent ID: 6571640
Filing Date: 2003-06-03
Classification: A63B,G01M

Abstract:
A method for measuring a flexural characteristic of a golf club shaft, comprising:providing the golf club shaft, wherein the golf club shaft has a first end and a second end; rigidly fixing the first end of the golf club shaft to a support structure; initializing a deflection measurement of the golf club shaft, the initialization performed under a first measurement condition; creating a bending moment on the golf club shaft to cause said golf club shaft to bend, the movement of said golf club shaft under the application of said bending moment defining a bending plane, the static position of raid golf club shaft under the application of said bending moment defining a second measurement condition; and optically measuring a deflection of the golf club shaft under said second measurement condition utilizing an image recording device, said image recording device positioned out of the plane of bending of said golf club shaft and having an optical axis substantially normal to the plane of bending of said golf club shaft.