초록 ▼

There is disclosed a set of golf irons which have progressively decreasing displacements between the axis of the shaft and the center of mass projected to the horizontal plane beginning with the long irons and progressing to the short irons. Each iron in the set also has a support column behind the

There is disclosed a set of golf irons which have progressively decreasing displacements between the axis of the shaft and the center of mass projected to the horizontal plane beginning with the long irons and progressing to the short irons. Each iron in the set also has a support column behind the striking face, parabolic shaped horizontal grooves in the striking face with a top junction between the striking face and each groove, the top junction and groove sides defined by a segment of a parabola, the longest groove length in the striking face of each club proportional to the club displacement, and a flat segment on the sole.

대표청구항 ▼

In a golf iron head including a planar face with a pattern of horizontal grooves thereon, the improvement comprising the configuration of the grooves each of which in cross section has an opening in the planar face, two sides, top junctions between the sides and planar face, a bottom, and bottom jun

In a golf iron head including a planar face with a pattern of horizontal grooves thereon, the improvement comprising the configuration of the grooves each of which in cross section has an opening in the planar face, two sides, top junctions between the sides and planar face, a bottom, and bottom junctions between the sides and bottom, wherein each side is defined by a segment of a parabola.