Golf ball

  • US 5,813,924 A
  • Filed: 06/18/1997
  • Issued: 09/29/1998
  • Est. Priority Date: 10/14/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. A solid golf ball comprising a solid core and a cover having a plurality of dimples thereon whereinthe core has a distortion of 2.8 to 4.0 mm under a load of 100 kg,the ratio of a core distortion (mm) under a load of 100 kg divided by a ball distortion (mm) under a load of 100 kg ranges from 1.0 to 1.3,the cover has a thickness of 1.4 to 1.9 mm, and a Shore D hardness of 53 to 60,said dimples are divided into at least three kinds of dimples which have different diameters each other,each dimple has the ratio of diameter (mm) divided by depth (mm) of 18 to 27,the value of the spatial volume of each dimple below a plane defined by an edge of the dimple divided by the volume of a cylinder wherein the bottom of said cylinder is defined by said plane and the height is determined by the maximum depth of the dimple from said plane ranges from 0.390 to 0.550, andthe total number of said dimples is in the range of 390 to 450.

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