| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To design individual clubs in a set so as to overall increase a continuity of the performance of an iron club set. <P>SOLUTION: The iron club set includes a long iron having a cavity back structure and a short iron having a muscle back structure. The structure of a rear face gradually shifts from a pure cavity back to a pure muscle back through a cavity muscle back and increases the continuity of the performance of the set. The additional design parameters of the set, the area of the face, the loft, offset and center of gravity for example, may be systematically varied throughout the set. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
