| 摘要 |
1508039 Golf balls DUNLOP Ltd 18 Aug 1976 [6 Sept 1975] 36794/75 Heading A6D A golf ball having a plurality of dimples 3 is provided with twelve, twenty or thirty "bald" patches 4 symmetrically disposed on the surface of the ball, a bald patch being any region on which it is possible to draw a "spherical rectangle" having a "width" of at least half of the "main dimple diameter" and a surface area of at least twice the "mean dimple area", and, the rectangle not enclosing any dimple or part thereof. For deposition of what constitutes a "spherical rectangle"; its "width"; the "mean dimple diameter" and "area" the Specification should be referred to. Preferred patterns, materials, methods of construction and dimensions are given in the Specification. Specifications 1087566 and 1383422 are referred to.
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