US2008161130A1PendingUtilityA1

Multi-layer golf ball

53
Individually held — no corporate assignee on recordPriority: Nov 28, 2001Filed: Mar 13, 2008Published: Jul 3, 2008
Est. expiryNov 28, 2021(expired)· nominal 20-yr term from priority
Inventors:Michael J. SullivanDerek A. LaddWilliam E. MorganHerbert C. Boehm
A63B 37/0062A63B 37/0066A63B 37/0003
53
PatentIndex Score
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Claims

Abstract

Golf balls consisting of a single-layer core and a two-layer cover are disclosed. The surface hardness of the core layer is greater than the material hardness of the inner cover layer, and is preferably 80 Shore C or greater.

Claims

exact text as granted — not AI-modified
1 . A golf ball consisting of:
 a solid, single-layer core formed from a rubber composition and having a diameter of from 1.51 inches to 1.59 inches and a surface hardness of 80 Shore C or greater;   an inner cover layer formed from a thermoplastic composition and having a material hardness less than the surface hardness of the core; and   an outer cover layer formed from a polyurethane or polyurea composition.   
   
   
       2 . The golf ball of  claim 1 , wherein the outer cover layer has a material hardness less than the surface hardness of the core. 
   
   
       3 . The golf ball of  claim 1 , wherein the diameter of the core is from 1.53 inches to 1.55 inches. 
   
   
       4 . The golf ball of  claim 1 , wherein the surface hardness of the core is greater than 80 Shore C. 
   
   
       5 . The golf ball of  claim 1 , wherein the surface hardness of the core is greater than 85 Shore C. 
   
   
       6 . The golf ball of  claim 1 , wherein the surface hardness of the core is 87 Shore C or greater. 
   
   
       7 . The golf ball of  claim 1 , wherein the surface hardness of the core is 90 Shore C or greater. 
   
   
       8 . The golf ball of  claim 1 , wherein the core has a compression of from 50 to 90. 
   
   
       9 . The golf ball of  claim 1 , wherein the core has a compression of from 60 to 80. 
   
   
       10 . The golf ball of  claim 1 , wherein the core has a center hardness of 80 Shore C or less. 
   
   
       11 . The golf ball of  claim 1 , wherein the core has a center hardness of 70 Shore C or less. 
   
   
       12 . The golf ball of  claim 1 , wherein the core has a center hardness of 60 Shore C or less. 
   
   
       13 . The golf ball of  claim 1 , wherein the material hardness of the inner cover layer is from 80 Shore C to 90 Shore C. 
   
   
       14 . The golf ball of  claim 1 , wherein the material hardness of the inner cover layer is from 82 Shore C to 86 Shore C. 
   
   
       15 . The golf ball of  claim 1 , wherein the inner cover layer composition is an ionomeric blend. 
   
   
       16 . The golf ball of  claim 1 , wherein the inner cover layer composition comprises an ionomer and a maleic anhydride-grafted polymer. 
   
   
       17 . The golf ball of  claim 1 , wherein the outer cover layer composition is a thermosetting polyurethane or polyurea. 
   
   
       18 . The golf ball of  claim 1 , wherein the outer cover layer composition is a thermoplastic polyurethane or polyurea. 
   
   
       19 . The golf ball of  claim 1 , wherein the rubber composition comprises a base rubber present in an amount of at least 85 wt %, based on the total weight of rubber present in the composition. 
   
   
       20 . The golf ball of  claim 1 , wherein the rubber composition comprises a base rubber present in an amount of at least 95 wt %, based on the total weight of rubber present in the composition. 
   
   
       21 . The golf ball of  claim 1 , wherein the rubber composition comprises a base rubber present in an amount of at least 99.9 wt %, based on the total weight of rubber present in the composition. 
   
   
       22 . A golf ball consisting of:
 a solid, single-layer core formed from a rubber composition and having a diameter of from 1.51 inches to 1.59 inches, a compression of from 60 to 80, a center hardness of 70 Shore C or less, and a surface hardness of greater than 80 Shore C;   an inner cover layer formed from a thermoplastic ionomeric composition and having a material hardness less than the surface hardness of the core; and   an outer cover layer formed from a polyurethane or polyurea composition.   
   
   
       23 . The golf ball of  claim 22 , wherein the outer cover layer has a material hardness less than the surface hardness of the core. 
   
   
       24 . The golf ball of  claim 22 , wherein the diameter of the core is from 1.53 inches to 1.55 inches. 
   
   
       25 . The golf ball of  claim 22 , wherein the surface hardness of the core is 85 Shore C or greater. 
   
   
       26 . The golf ball of  claim 22 , wherein the material hardness of the inner cover layer is from 80 Shore C to 90 Shore C. 
   
   
       27 . The golf ball of  claim 22 , wherein the ionomeric composition comprises a high acid ionomer. 
   
   
       28 . A golf ball consisting of:
 a solid, single-layer core formed from a rubber composition and having a diameter of from 1.53 inches to 1.55 inches, a compression of from 60 to 80, a center hardness of 65 Shore C or less, and a surface hardness of greater than 80 Shore C;   an inner cover layer formed from a thermoplastic ionomeric composition and having a material hardness less than the surface hardness of the core; and   an outer cover layer formed from a polyurethane or polyurea composition.   
   
   
       29 . The golf ball of  claim 28 , wherein the outer cover layer has a material hardness less than the surface hardness of the core.

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