US2012115644A1PendingUtilityA1

Golf ball compositions

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. Sullivan David A. Bulpett Brian Comeau Mark L. Binette Robert Blink

A63B 37/0031A63B 37/0037A63B 37/0043

PatentIndex Score

Cited by

References

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;   an inner cover layer having a surface hardness of 65 Shore D or less; and   an outer cover layer having a surface hardness of 60 Shore D or greater;   wherein the surface hardness of the outer cover layer is greater than the surface hardness of the inner cover layer; and   wherein the inner cover layer is formed from a composition having a JIS-C hardness (H) and a flexural modulus in ksi (M) wherein H≦11.889Ln(M)+42, and wherein M&gt;6 ksi.   
     
     
         2 . The golf ball of  claim 1 , wherein H≦11.889Ln(M)+41. 
     
     
         3 . The golf ball of  claim 1 , wherein H≦11.889Ln(M)+40. 
     
     
         4 . The golf ball of  claim 1 , wherein M&gt;40 ksi. 
     
     
         5 . The golf ball of  claim 4 , wherein H≦9.45Ln(−0.0105M 2 +3.95M−14)+40. 
     
     
         6 . A golf ball comprising:
 a core;   an inner cover layer having a surface hardness of 65 Shore D or less; and   an outer cover layer having a surface hardness of 60 Shore D or greater;   wherein the surface hardness of the outer cover layer is greater than the surface hardness of the inner cover layer; and   wherein the outer cover layer is formed from a composition having a JIS-C hardness (H) and a flexural modulus in ksi (M) wherein H≦11.889Ln(M)+42, and wherein M&gt;6 ksi.   
     
     
         7 . The golf ball of  claim 6 , wherein H≦11.889Ln(M)+41. 
     
     
         8 . The golf ball of  claim 6 , wherein H≦11.889Ln(M)+40. 
     
     
         9 . The golf ball of  claim 6 , wherein M&gt;40 ksi. 
     
     
         10 . The golf ball of  claim 9 , wherein H≦9.45Ln(−0.0105M 2 +3.95M−14)+40.

Join the waitlist — get patent alerts

Track US2012115644A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.