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US 2002/0173372 A1Published application
Golf shaft alteration technique
OwnerMatthew J. Kluck, Christopher M. Alleninventors
Life of this patent
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Abstract
A method for altering a golf club shaft by removing less than five grams of metal from an interior wall surface in a flex zone. This is performed without penetrating through an exterior wall surface of the shaft.
Claims4
A method for altering a golf club shaft comprising:
- (a) providing a metal golf club shaft having a hollow interior with an interior wall surface, an exterior wall surface, a butt end, a tip end and a flex zone sixteen inches from the butt end with a range one inch up and one inch down from the measured sixteen inch point;
- and
- (b) removing less than five grams of metal from the interior wall surface in the flex zone without penetrating through the exterior wall surface.
Dependencies are inferred from the claim text.