发明授权
- 专利标题: Golf ball
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申请号: US680765申请日: 1991-04-05
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公开(公告)号: US5156404A公开(公告)日: 1992-10-20
- 发明人: Kengo Oka , Yoshikazu Yabuki , Kiyoto Maruoka
- 申请人: Kengo Oka , Yoshikazu Yabuki , Kiyoto Maruoka
- 申请人地址: JPX Hyogo
- 专利权人: Sumitomo Rubber Industries, Ltd.
- 当前专利权人: Sumitomo Rubber Industries, Ltd.
- 当前专利权人地址: JPX Hyogo
- 优先权: JPX2-249880 19900918
- 主分类号: A63B37/00
- IPC分类号: A63B37/00
摘要:
A golf ball has one great circle and four one-half great circles which all intersect no dimples. Eight end points which include two end points of each one-half great circle are formed at the one great circle. These end points do not coincide with each other on the great circle. One of the one-half great circles intersects the other one-half great circle at a right angle at the middle point thereof on each of the great circle. In other words, an upper semispherical mold for an octahedral dimple golf ball arrangement is rotated a certain angle relative to the lower mold such that two of the three great circles are divided into four one-half great circles. The parting line of the mold becomes the one remaining great circle. In this manner, a more uniform flight of the golf ball canbe obtained regardless of whether the ball is hit on a seam, semi-seam of non-seam area.
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