发明名称 A GOLF BALL WITH PYRAMIDAL PROTRUSIONS
摘要 <p>A golf ball (20) approaching zero land area is disclosed herein. The golf ball (20) has an innersphere (21) with a plurality of pyramidal projections (40). Each of the plurality of projections (40) has an apex (50) that extends to a height to conform with the 1.68 inches requirement for USGA approved golf balls. The plurality of pyramidal projections (40) extend 0.005 inches to 0.015 inches from the innersphere surface (22). The outermost 0.002 inches of the golf ball (20) has a minimal volume.</p>
申请公布号 WO2001036052(A1) 申请公布日期 2001.05.25
申请号 US2000031624 申请日期 2000.11.16
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