US2012115646A1PendingUtilityA1

Golf ball compositions

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Individually held — no corporate assignee on recordPriority: Nov 8, 2010Filed: Dec 31, 2010Published: May 10, 2012
Est. expiryNov 8, 2030(~4.3 yrs left)· nominal 20-yr term from priority
Inventors:Michael J. SullivanDavid A. BulpettBrian ComeauMark L. BinetteRobert Blink
A63B 37/0023A63B 37/005A63B 37/0003A63B 37/0024A63B 37/0051A63B 37/0037A63B 37/0058A63B 37/0031
45
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Claims

Abstract

Disclosed herein are soft and stiff compositions, i.e., compositions which have a flexural modulus that is greater than the value that is expected based on the composition's hardness. The compositions preferably have a hardness/modulus relationship represented by the formula H≦11.889 Ln(M)+42, where H is the hardness of the composition, in JIS-C, and M is the flexural modulus of the composition, in ksi; or a softness/stiffness relationship represented by the formula if M<56, then H≦8.5218 Ln(M)+26.5 if M≧56, then H≦8.5218 Ln(M)+28.5, where H is the hardness of the composition, in Shore D, and M is the flexural modulus of the composition, in ksi.

Claims

exact text as granted — not AI-modified
1 . A golf ball comprising:
 a center formed from a first thermoplastic composition;   an intermediate core layer formed from a thermoset rubber composition;   an outer core layer formed from a second thermoplastic composition; and   a cover;   wherein at least one of the first thermoplastic composition and the second thermoplastic composition is formed from a composition having a JIS-C hardness (H) and a flexural modulus in ksi (M) wherein H≦11.889 Ln(M)+42, and wherein M>6 ksi.   
     
     
         2 . The golf ball of  claim 1 , wherein H≦11.889 Ln(M)+41. 
     
     
         3 . The golf ball of  claim 1 , wherein H≦11.889 Ln(M)+40. 
     
     
         4 . The golf ball of  claim 1 , wherein M>40 ksi. 
     
     
         5 . The golf ball of  claim 4 , wherein H≦9.45 Ln(−0.0105M 2 +3.95M−14)+40.

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