Golf ball having a dimple combination pattern

Abstract

A combination dimple pattern on the surface of a golf ball is characterized by both circular and compound dimples. The compound dimples include a first circular dimple portion and a second circular dimple portion arranged in a bottom surface of the first circular portion, with the second circular dimple portion having a diameter less than the diameter of the first circular portion. The combination of compound and circular dimples on the surface of the ball improves the aerodynamic efficiency of the ball and increases the distance the ball will travel.

What is claimed is:  
     
         1 . A golf ball having a spherical surface containing a plurality of dimples, a first group of said dimples having a circular configuration and a second group of said dimples having a compound configuration including a first circular dimple portion and a second circular dimple portion arranged in a bottom surface of said first circular dimple portion, said second circular dimple portion having a diameter less than that of said first circular dimple portion, whereby the circular and compound dimples increase the turbulence of the air flow at the golf ball surface to improve the flight characteristics of the ball.  
     
     
         2 . A golf ball as defined in  claim 1 , wherein the number of dimples in said second group of dimples is greater than the number of dimples in said first group of dimples.  
     
     
         3 . A golf ball as defined in  claim 2 , wherein the diameter of said dimples of said first group of dimples is equal to the diameter of said first circular dimple portion of said second group of dimples.  
     
     
         4 . A golf ball as defined in  claim 1 , wherein dimples of said second group of dimples are arranged around a dimple of said first group of dimples.  
     
     
         5 . A golf ball as defined in  claim 1 , wherein said first and second groups of dimples are randomly arranged about the surface of the golf ball.  
     
     
         6 . A golf ball as defined in  claim 1 , wherein said first and second groups of dimples are arranged in a geometric pattern on the surface of the golf ball.