| 摘要 |
<p>PURPOSE: To hit the lower side from the center of gravity of a golf ball with a protruded stripe when driving the golf ball with an iron club and give a back spin to the golf ball by forming the protruded stripe at the upper position of the face of a head nearly parallel with the longitudinal direction of the face. CONSTITUTION: The face 2 of this iron club head A is formed flat. A linear protruded stripe 3 is formed nearly parallel with the longitudinal direction of the face 2 or nearly parallel with score rings (parallel grooves) 2c on the top edge 2b side at the upper position of the face 2. The protruded stripe has a triangular cross section with the height H of about 2-3mm and the width W of about 3-5mm, preferably the height H of 2.5mm and the width W of about 3mm, for example. When a golf ball B is driven with this iron club, the protruded stripe 3 bites the surface of the golf ball B, and the CW rotation (back spin) is given to the driven ball B.</p> |
