| 摘要 |
A golf ball is provided with dimples (10) in which each dimple consists of a first cavity (11) and a second cavity (13), the cavities being immediately adjacent each other on a great circle of the ball. The dimple arrangement minimises aerodynamic drag (air-resistance) when the ball is in play. A second embodiment shows a circular cavity (22) surrounded by an annular cavity (21). <IMAGE> |
