US2012115649A1PendingUtilityA1

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 37/00622A63B 37/00621A63B 37/0031A63B 37/0065A63B 37/0037A63B 37/0003
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 core having a center hardness of 70 Shore C or less, a surface hardness of 90 Shore C or less, and a compression of 70 or less; and   a cover layer formed from a thermoplastic 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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