Golf club shaft

Details Golf club shaft Golf club shaft

A - Human Necessities

63

B

273/160

A63B 53/10 (2006.01) A63B 53/12 (2006.01)

Patent

CA 1186711

Abstract A shaft for a golf club includes a first series of step portions, with the step portions increasing in diameter along the shaft from a tip or hosel end of the shaft toward a grip end. The step portions are sepa- rated from adjacent step portions by transitional por- tions which consist of a relatively gentle taper which smoothly link the surfaces of one step portion with another. A second series of step portions is disposed between the first series of step portions and the grip end of the shaft, with the diameter of the step portions increasing by a predetermined amount from the first ser- ies of step portions toward the grip end. The second series of step portions are separated from adjacent step portions and from the grip end further transitional por- tions which are similar to the transitional portions dis- cussed above. The golf shaft of the present invention has reduced stress concentration points along the circum- ferential axis of the shaft, a smoother line of dynamic deflection and a unique finished product appearance.

426650

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