A golf ball of improved playing characteristics weighing no more than 1.62 ounces and having a mean outside diameter of at least 1.70 inches. A dimple pattern on the surface of the ball may include a plurality of dimples which have different diameters. The dimples cover at least 70% of the surface of...http://www.google.de/patents/US5482286?utm_source=gb-gplus-sharePatent US5482286 - Golf ball
