| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a golf ball as far as possibly having both characteristics as a two-piece ball and as a spool ball. SOLUTION: This golf ball has a core ball 1 made of rubber-like elastic material at the center. Since warty protrusions are formed partly and evenly all over the surface of the core ball 1, a space 4 is inevitably generated between the outer surface of the core ball 1 and the inner surface of a ball body 3 made of an elastic material which covers and includes the core ball in it, and compressed gas exceeding 1atm is inserted into the space 4. The ball body with this constitution is covered with a covering material made of synthetic resin to be formed integrally.</p> |
