| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf ball provided with a mark enabling a player to control a head trajectory, a ball trajectory or a ball hitting point. <P>SOLUTION: The golf ball 2 has a plurality of mark groups 4 which can be viewed simultaneously. The mark group 4 has a target mark t provided along one large circle and composed of a single or two or more marks, and an inclined mark k that looks as if it is inclined relative to the target mark t. A linear mark that looks as if it is inclined relative to the target mark is used as the inclined mark k. The mark group may have the target mark t provided along one large circle and composed of a single or two or more marks and a side mark s provided on the side part of the target mark t. It is preferable that the side mark s is dot-like. The mark group can be provided with the target mark t provided along one large circle and composed of a single or two or more marks and a juxtaposition mark h provided on the large circle same as the target mark t. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
