Patent ID: 7326131

Claim:
A golf ball having a diameter of from 40 mm to 45 mm which comprises a core, a cover and numerous dimples formed on the surface of the cover, in an amount of at least 200 to 500 or less said dimples having an annular groove, wherein the thickness of the cover is equal to or less than 1.4 mm, the shore D hardness of the cover is equal to or less than 53, and the ratio (S 1 /S 2 ) between a summation S 1 of surface areas s 1 of the dimples, and a summation S 2 of the areas s 2 of the regions cut away by the dimples from a phantom spherical face is equal to or greater than 1.03, wherein the surface area s 1 is from 8.2 mm 2 to 38.7 mm 2 and the total surface area S 1 is 4130 mm 2 to 7740 mm 2 .