US2008153629A1PendingUtilityA1

Thick Outer Cover Layer Golf Ball

53
Individually held — no corporate assignee on recordPriority: May 7, 2004Filed: Mar 4, 2008Published: Jun 26, 2008
Est. expiryMay 7, 2024(expired)· nominal 20-yr term from priority
Inventors:Michael J. Sullivan
A63B 37/0056A63B 37/0064A63B 37/0053A63B 37/0065A63B 37/0033A63B 37/0003A63B 37/0087A63B 37/0031A63B 37/0054A63B 37/0052A63B 37/0063A63B 37/0084A63B 37/0061A63B 37/0075
53
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Claims

Abstract

A golf ball including a low compression core having an outer surface and a geometric center and being formed from a substantially homogenous composition throughout, the core having a diameter of 1.18 inches to 1.40 inches, an Atti compression of 42 or less, and a coefficient of restitution of 0.750 to 0.790. An outer cover having a thickness of 0.14 inches to 0.16 inches and a Shore D hardness of 60 to 70 is disposed about the core. The outer surface has a first hardness and the geometric center has a second hardness, the first hardness being substantially the same as or lower than the second hardness to define a “negative” hardness gradient.

Claims

exact text as granted — not AI-modified
1 . A golf ball comprising:
 a low compression core having an outer surface and a geometric center and being formed from a substantially homogenous composition throughout, the core having a diameter of 1.18 inches to 1.40 inches, an Atti compression of 42 or less, and a coefficient of restitution of 0.750 to 0.790; and   an outer cover having a thickness of 0.14 inches to 0.16 inches and having a Shore D hardness of 60 to 70;   wherein the outer surface has a first hardness and the geometric center has a second hardness, the first hardness being substantially the same as or lower than the second hardness.   
   
   
       2 . The golf ball of  claim 1 , wherein the core compression is 20 or less. 
   
   
       3 . The golf ball of  claim 1 , wherein the second hardness is about 0 Shore C to about 5 Shore C higher than the first hardness. 
   
   
       4 . The golf ball of  claim 1 , wherein the core has a maximum hardness value and the second hardness is less than about 10 Shore C from the maximum hardness value. 
   
   
       5 . The golf ball of  claim 4 , wherein the second hardness is less than about 5 Shore C from the maximum hardness value. 
   
   
       6 . A golf ball comprising:
 a low compression core having a substantially homogenous composition throughout, an outer surface, and a geometric center, the core having a diameter of 1.20 inches to 1.36 inches, a compression of 30 or less, and a coefficient of restitution of 0.750 to 0.790 when measured at an incoming velocity of 125 ft/s; and   an outer cover having a thickness of 0.125 inches to 0.200 inches;   wherein the geometric center has a first hardness, the outer surface has a second hardness, and the core has a maximum hardness, the first hardness being substantially the same as or higher than the second hardness and is less than about 10 Shore C lower than the maximum hardness.   
   
   
       7 . The golf ball of  claim 6 , wherein the first hardness is less than about 5 Shore C lower than the maximum hardness. 
   
   
       8 . The golf ball of  claim 6 , wherein the second hardness is about 0 Shore C to about 10 Shore C lower than the first hardness. 
   
   
       9 . The golf ball of  claim 8 , wherein the second hardness is about 0 Shore C to about 5 Shore C lower than the first hardness. 
   
   
       10 . The golf ball of  claim 6 , wherein the core has a compression of 20 or less. 
   
   
       11 . The golf ball of  claim 10 , wherein the core has a compression of 10 or less. 
   
   
       12 . The golf ball of  claim 6 , wherein the composition further comprises a soft and fast agent 
   
   
       13 . A golf ball comprising:
 a low compression core having a substantially homogenous thermoset rubber composition throughout, an outer surface having a first hardness, and a center having a second hardness, the first hardness being substantially the same as or lower than the second hardness to define a negative hardness gradient; and   an outer cover having a thickness of 0.125 inches to 0.200 inches;   wherein the core comprises a diene rubber composition, has an outer diameter of 1.18 inches to 1.40 inches, a compression of 30 or less, and a coefficient of restitution of 0.750 to 0.790 when measured at an incoming velocity of 125 ft/s, and wherein the golf ball has a compression of 75 to 110 and a coefficient of restitution of 0.810 or greater when measured at an incoming velocity of 125 ft/s.   
   
   
       14 . The golf ball of  claim 13 , wherein the core has a diameter of 1.2 inches to 1.36 inches and a compression of 20 or less. 
   
   
       15 . The golf ball of  claim 14 , wherein the core compression is 10 or less. 
   
   
       16 . The golf ball of  claim 13 , wherein the core has a maximum hardness and the second hardness is less than about 5 Shore C lower than the maximum hardness. 
   
   
       17 . The golf ball of  claim 13 , wherein the second hardness is about 0 Shore C to about 10 Shore C lower than the first hardness. 
   
   
       18 . The golf ball of  claim 17 , wherein the second hardness is about 0 Shore C to about 5 Shore C lower than the first hardness. 
   
   
       19 . The golf ball of  claim 13 , wherein the cover has a hardness of 70 Shore D or less. 
   
   
       20 . The golf ball of  claim 13 , wherein the cover thickness is 0.14 inches to 0.16 inches.

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