GOLF CLUB SHAFT FITTING METHOD
First Claim
1. A fitting method, of a shaft of a golf club, for selecting a shaft having a torque matching a golfer based on a swing of the golfer, the method including the steps of:
- obtaining measurement values from a sensor attached to a grip of the golf club and capable of measuring angular velocities about three axes when a golf ball is hit by the golf club;
obtaining a predetermined index value for the angular velocities quantified from the measurement values; and
selecting a shaft matching the golfer from among multiple shafts whose torques have been measured in advance, based on a relationship established through test-hitting performed in advance between the index value and a torque of a shaft.
2 Assignments
0 Petitions
Accused Products
Abstract
A fitting method, of a shaft of a golf club, for selecting a shaft having a torque matching a golfer based on a swing of the golfer. The method includes the steps of obtaining measurement values from a sensor attached to a grip of the golf club and capable of measuring angular velocities about three axes when a golf ball is hit by the golf club; obtaining a predetermined index value for the angular velocities quantified from the measurement values; and selecting a shaft matching the golfer from among multiple shafts whose torques have been measured in advance, based on a relationship established through test-hitting performed in advance between the index value and a torque of a shaft.
17 Citations
20 Claims
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1. A fitting method, of a shaft of a golf club, for selecting a shaft having a torque matching a golfer based on a swing of the golfer, the method including the steps of:
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obtaining measurement values from a sensor attached to a grip of the golf club and capable of measuring angular velocities about three axes when a golf ball is hit by the golf club; obtaining a predetermined index value for the angular velocities quantified from the measurement values; and selecting a shaft matching the golfer from among multiple shafts whose torques have been measured in advance, based on a relationship established through test-hitting performed in advance between the index value and a torque of a shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 20)
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9. A fitting method, of a shaft of a golf club, for selecting a shaft having a twist rigidity matching a golfer based on a swing of the golfer, the method including the steps of:
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obtaining measurement values from a sensor attached to a grip of the golf club and capable of measuring angular velocities about three axes when a golf ball is hit by the golf club; obtaining a predetermined index value for the angular velocities quantified from the measurement values; and selecting a shaft matching the golfer from among multiple shafts whose twist rigidities have been measured in advance, based a relationship established through test-hitting performed in advance between the index value and a twist rigidity of a shaft wherein among multiple parts along an axial direction of a shaft, the relationship is established for each of the multiple parts, and the twist rigidities are measured at each of the multiple parts of the multiple shafts. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification