Golf ball

Abstract

The present invention is a golf ball having a core and a cover. The core has a diameter of 1.50 inches to 1.56 inches, and a PGA compression of 55 to 70 points. The cover has a thickness of 0.60 inch to 0.90 inch. The cover has a Shore D hardness less than 64 as measured on the land surface of the golf ball. The golf ball has a ball velocity off a driver at a medium speed that is greater than 132.7 mph.

We claim as our invention:  
     
         1 . A golf ball comprising: 
 a core having a diameter of 1.50 inches to 1.56 inches, the core comprising polybutadiene, zinc oxide in an amount of 7 to 15 parts per hundred parts of polybutadiene, zinc diacryalate in an amount of 30 to 50 parts per hundred parts of polybutadiene; an initiator in an amount of 0.1 to 1.0 parts per hundred parts of polybutadiene, and tungsten in an amount of 5 to 10 parts per hundred parts of polybutadiene, the core having a PGA compression of 55 to 70 points; and    a cover having a thickness of 0.60 inch to 0.90 inch, the cover comprising an ionomer blend formed from a high acid ionomer resin neutralized with zinc, a high acid ionomer resin neutralized with sodium, and a terpolymer neutralized with magnesium, the cover having a flexural modulus ranging from 50,000 psi to 65,000 psi, a Shore D hardness ranging from 60 to 65;    wherein the golf ball has a PGA compression ranging from 80 to 90 points.    
     
     
         2 . A golf ball comprising: 
 a core having a diameter of 1.50 inches to 1.56 inches, the core having a PGA compression of 55 to 70 points; and    a cover having a thickness of 0.60 inch to 0.90 inch, the cover having a Shore D hardness less than 64 as measured on the land surface of the golf ball;    wherein the golf ball has a ball velocity off a driver at a medium speed that is greater than 132.7 mph.    
     
     
         3 . A golf ball comprising: 
 a core having a diameter of 1.50 inches to 1.56 inches, the core having a PGA compression of 55 to 70 points; and    a cover having a thickness of 0.60 inch to 0.90 inch, the cover having a Shore D hardness less than 64 as measured on the land surface of the golf ball;    wherein the golf ball has a ball velocity off a five iron at a medium speed that is greater than 115.0 mph.    
     
     
         4 . A golf ball comprising: 
 a core having a diameter of 1.50 inches to 1.56 inches, the core having a PGA compression of 55 to 70 points; and    a cover having a thickness of 0.60 inch to 0.90 inch, the cover having a Shore D hardness less than 64 as measured on the land surface of the golf ball;    wherein the golf ball has a COR that is greater than 0.795 points.