Golf Ball

Abstract

The present invention is a golf ball having a core, a cover and a lattice structure aerodynamic pattern. 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 on 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 45 to 65 points; and    a cover having a thickness of 0.060 inch to 0.090 inch, the cover comprising an ionomer blend formed from a high acid ionomer neutralized with zinc and a terpolymer neutralized with magnesium, the cover having a flexural modulus ranging from 35,000 psi to 60,000 psi, a Shore D hardness ranging from 60 to 65;    wherein the golf ball has a PGA compression ranging from 75 to 85 points, and the golf ball has a lattice structure aerodynamic pattern.    
     
     
         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 45 to 65 points; and    a cover having a thickness of 0.060 inch to 0.090 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, and wherein the golf ball has an innersphere having a diameter in the range of 1.60 to 1.78 inches, a plurality of smooth portions on the surface of the innersphere and a plurality of lattice members.    
     
     
         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 45 to 65 points; and    a cover having a thickness of 0.060 inch to 0.090 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, and wherein the golf ball has an innersphere having a diameter in the range of 1.60 to 1.78 inches, a plurality of smooth portions on the surface of the innersphere and a plurality of lattice members.    
     
     
         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 45 to 65 points; and    a cover having a thickness of 0.060 inch to 0.090 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 0.783 points at 143 fps, and wherein the golf ball has an innersphere having a diameter in the range of 1.60 to 1.78 inches, a plurality of smooth portions on the surface of the innersphere and a plurality of lattice members.    
     
     
         5 . A golf ball comprising: 
 a core having a diameter of 1.50 inches to 1.56 inches, the core having a PGA compression of 45 to 65 points;    a cover having a thickness of 0.060 inch to 0.090 inch, the cover having a Shore D hardness less than 64 as measured on the land surface of the golf ball;    an innersphere having a surface;    a plurality of smooth portions on the surface of the innersphere; and    a plurality of lattice members encompassing the plurality of smooth portions, each of the lattice members having a cross-sectional curvature comprising a first concave portion, a second concave portion and a convex portion disposed between the first concave portion and the second concave portion, the convex portion having an apex tangent to the curvature of the convex portion, each of the plurality of lattice members connected to at least one other lattice member to form a predetermined pattern of polygons about the plurality of smooth portions, each of the lattice members having an apex at a distance of from 0.005 inch to 0.010 inch from the bottom of the lattice member thereby defining an outersphere.    
     
     
         6 . A golf ball comprising: 
 a core having a diameter of 1.50 inches to 1.56 inches, the core having a PGA compression of 45 to 65 points;    a cover having a thickness of 0.060 inch to 0.090 inch, the cover having a Shore D hardness less than 64 as measured on the land surface of the golf ball;    an innersphere having a surface;    a plurality of smooth portions on the surface of the innersphere; and    a plurality of lattice members disposed on the innersphere surface, each of the lattice members having a cross-sectional curvature with an arc and an apex at the highest point of the arc of each of the lattice members that is tangent to the curvature of the arc, each of the plurality of lattice members connected to at least one other lattice member to form a plurality of interconnected polygons about each of the plurality of smooth portions;    wherein the lattice members cover between 20% and 80% of the surface of the golf ball, and the plurality of smooth portions and the plurality of lattice members cover the entirety of the surface of the golf ball.    
     
     
         7 . A golf ball comprising: 
 a core having a diameter of 1.50 inches to 1.56 inches, the core having a PGA compression of 45 to 65 points;    a cover having a thickness of 0.060 inch to 0.090 inch, the cover having a Shore D hardness less than 64 as measured on the land surface of the golf ball;    a plurality of lattice members wherein an apex of at least one of the plurality of lattice members defines the greatest extent of the golf ball, wherein the volume of the outermost 0.002 inch of the golf ball is less than 0.00213 cubic inch.    
     
     
         8 . The golf ball according to  claim 7  wherein the volume of the outermost 0.004 inch of the golf ball is less than 0.00498 cubic inch.