ASCENDING WEIGHT IRON SHAFT SYSTEM

摘要

Described herein is a system of golf clubs having shafts with ascending weights (shaft weights that increase as shaft lengths decrease). The system of golf clubs can be manufactured by implementing a method called “stepping”, which allows the system of golf clubs with ascending weights to be manufactured with reduced quantity of inventory.

主权项

1. A plurality of starting stocks for manufacturing a set of golf clubs, comprising:
a plurality of first starting stocks having a first average outer diameter, a first average inner diameter, a first average cross-sectional area, and a first average weight-to-length ratio; a plurality of second starting stocks having a second average outer diameter, a second average inner diameter, a second average cross-sectional area, and a second average weight-to-length ratio, wherein the second average weight-to-length ratio is greater than the first average weight-to-length ratio; wherein one of the plurality of first starting stocks is configured to be cut to a first length, resulting in a first shaft having a first weight, the first shaft being assembled to a first club head with a first loft angle to make a first golf club in a particular stiffness class; wherein one of the plurality of second starting stocks is configured to be cut to a second length, resulting in a second shaft having a second weight, the second shaft being assembled to a second club head with a second loft angle to make a second golf club in the same stiffness class as the first golf club, wherein the second weight is greater than the first weight, the second length is less than the first length, and the second loft is greater than the first loft.