Patent ID: 8444501
Filing Date: 2013-05-21
Classification: A63B

Abstract:
1. A set of at least three golf clubs having different club lengths L k , each of the golf clubs having a shaft with an upper end and a lower end, a grip section on the upper end of the shaft, and a head with a ball-striking surface mounted on the lower end of the shaft, the club length L k of each golf club decreasing through the set, each golf club having a balance point length L BP,n defined from the distal end of the grip section to a balance point BP, and a club weight m k,n , wherein a value of at least one torsional moment for each of the at least three golf clubs when swung by a golfer differs from each other, and a linear function of club length L a first torsional moment PCF a second torsional moment ICF wherein ICF