Golf ball core compositions with metamaterial

Abstract

Compositions including a resiliency additive and golf ball components made from such compositions having a tailored Coefficient of Restitution are disclosed. The type and concentration of the constituents in the composition, including the resiliency additive, affects the Coefficient of Restitution of components made from the composition and, thus, can be used to produce a golf ball having desirable performance characteristics.

What is claimed is: 
     
         1 . A golf ball, comprising:
 a core formed of a core composition comprising a resiliency additive, wherein the resiliency additive comprises a plurality of magnets, and wherein the plurality of magnets comprises permanent magnets; and   a cover layer disposed about the core.   
     
     
         2 . The golf ball of  claim 1 , wherein the permanent magnets comprise neodymium magnets, samarium cobalt magnets, aluminum nickel cobalt magnets, ceramic magnets, or combinations thereof. 
     
     
         3 . The golf ball of  claim 1 , wherein the plurality of magnets comprises a first magnet and a second magnet, and wherein the first magnet and second magnet are configured to attract each other. 
     
     
         4 . The golf ball of  claim 1 , wherein the plurality of magnets comprises a first magnet and a second magnet, and wherein the first magnet and second magnet are configured to repel each other. 
     
     
         5 . The golf ball of  claim 1 , wherein each magnet in the plurality of magnets comprises a magnetic moment having a direction, and wherein the direction of the magnetic moment of each magnet extends substantially parallel to the magnetic moment of each other magnet. 
     
     
         6 . The golf ball of  claim 1 , wherein the core comprises a geometric center, wherein each magnet in the plurality of magnets includes a magnetic moment having a direction, and wherein the direction of the magnetic moment of each magnet is substantially colinear with a line passing through the geometric center of the core. 
     
     
         7 . The golf ball of  claim 1 , wherein the resiliency additive is present in the core composition in an amount of about 5 to about 50 percent by weight. 
     
     
         8 . The golf ball of  claim 1 , wherein the golf ball has a coefficient of restitution between about 0.700 and about 0.950. 
     
     
         9 . A golf ball, comprising:
 a core formed of a core composition comprising a plurality of magnets, wherein the plurality of magnets comprises permanent magnets; and   a cover layer disposed about the core.   
     
     
         10 . The golf ball of  claim 9 , wherein the permanent magnets comprise neodymium magnets, samarium cobalt magnets, aluminum nickel cobalt magnets, ceramic magnets, or combinations thereof. 
     
     
         11 . The golf ball of  claim 9 , wherein each magnet in the plurality of magnets is configured to attract or repel each other magnet in an axial direction. 
     
     
         12 . The golf ball of  claim 9 , wherein each magnet in the plurality of magnets is configured to attract or repel each other magnet radially. 
     
     
         13 . The golf ball of  claim 9 , wherein each magnet in the plurality of magnets is configured to attract or repel each other magnet circumferentially. 
     
     
         14 . The golf ball of  claim 9 , wherein the plurality of magnets is present in the core composition in an amount of about 5 to about 50 percent by weight. 
     
     
         15 . The golf ball of  claim 9 , wherein the golf ball has a coefficient of restitution between about 0.700 and about 0.950. 
     
     
         16 . A golf ball, comprising:
 a core comprising a core composition comprising a resiliency additive, wherein the resiliency additive comprises a plurality of magnets, and wherein the plurality of magnets comprises electromagnets; and   a cover layer disposed about the core.   
     
     
         17 . The golf ball of  claim 16 , wherein the electromagnets comprise copper, iron, steel, and cobalt, or combinations thereof. 
     
     
         18 . The golf ball of  claim 16 , wherein the resiliency additive is present in the core composition in an amount of about 5 to about 50 percent by weight. 
     
     
         19 . The golf ball of  claim 16 , wherein the golf ball has a coefficient of restitution between about 0.700 and about 0.950. 
     
     
         20 . The golf ball of  claim 16 , wherein the golf ball has a coefficient of restitution between about 0.500 and about 0.700.