Patent ID: 6915695
Filing Date: 2005-07-12
Classification: A63B,G01H

Abstract:
1. A method of determining a preferred angular orientation of a golf club shaft about a longitudinal axis thereof, said golf club shaft having a proximal end for gripping by a golf r and a distal end for attachment to a golf club head, said method comprising: immobilizing a first one of said proximal end and said distal end of said golf flub shaft; initiating vibratory motion of a second one of said proximal end and said distal end of said golf club shaft in each of a plurality of vibration planes, each lying at a respective angular position about said longitudinal axis; for each of said vibration planes, measuring maximum out-of-plane displacement of said second one of said proximal end and said distal end of said golf club shaft; analyzing said measured displacements; and calculating from said analyzed measured displacements said preferred angular orientation.