Abstract: A one way action golf club flex modification system mounted within a golf club. The non-linear shape of the flex modification member engages the interior wall of the hollow shaft at two regions on opposite sides of the shaft interior and is affixed to a third point in the handle. The “free” end of the flex modification system is closest to the head and generally oriented toward the striking face of the head. The one way action reduces the flexibility of the shaft during the swing toward the golf ball but allows the shaft to flex forward with the travel of the ball. The plane described by the waive shape of the flex member may be fixedly rotated relative to the shaft to allow fine tuning to accommodate the individual swing of the golfer.

Abstract: A one way action golf club flex modification system mounted within a golf club. The non-linear shape of the flex modification member engages the interior wall of the hollow shaft at two regions on opposite sides of the shaft interior and is affixed to a third point in the handle. The “free” end of the flex modification system is closest to the head and generally oriented toward the striking face of the head. The one way action reduces the flexibility of the shaft during the swing toward the golf ball but allows the shaft to flex forward with the travel of the ball. The plane described by the waive shape of the flex member may be fixedly rotated relative to the shaft to allow fine tuning to accommodate the individual swing of the golfer.