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GOLF CLUB SHAFT FITTING METHOD

  • US 20130260923A1
  • Filed: 03/29/2013
  • Published: 10/03/2013
  • Est. Priority Date: 03/30/2012
  • Status: Active Grant
First Claim
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1. A fitting method of a shaft of a golf club for selecting a shaft matching a golfer based on a swing of the golfer, the method comprising the steps of:

  • obtaining measurement values from a sensor attached to a grip of a golf club and capable of measuring angular velocities about three axes when a golf ball is hit by the golf club;

    determining address, top, and impact of a swing from the measurement values; and

    selecting a shaft that matches a golfer through a usage of the following swing characteristic amounts of (a) to (d) obtained from the measurement values;

    (a) Amount of change of grip angular velocity in a direction of a wrist cock around the top;

    (b) An average value of grip angular velocity in the direction of a wrist cock, from the top to a point during a downswing where a grip angular velocity in the direction of a wrist cock becomes a maximum;

    (c) An average value of grip angular velocity in the direction of a wrist cock, from a point during a downswing where a grip angular velocity in the direction of a wrist cock becomes a maximum to the impact;

    (d) An average value of grip angular velocity in the direction of a wrist cock, from the top to the impact.

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