| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf ball which can improve the putter technique significantly by making a plurality of balls align in a shorter time. <P>SOLUTION: The golf ball 10 has a pair of permanent magnets 16 and 16 buried thereinto being exposed almost flush with the surface of the body 11 thereof. The permanent magnets 16 and 16 are arranged respectively at two upper ends of a straight line running through the center of the body 11 of the ball. Both the permanent magnets 16 and 16 are differently polarized on the exposed sides thereof. A marker 20 indicating the polarity of the permanent magnets 16 is provided on the surface of the body 11 of the ball on the side of at least one of the permanent magnets 16. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
