US2009247325A1PendingUtilityA1

High performance golf ball having a reduced distance

55
Individually held — no corporate assignee on recordPriority: Dec 5, 2006Filed: Apr 27, 2009Published: Oct 1, 2009
Est. expiryDec 5, 2026(~0.4 yrs left)· nominal 20-yr term from priority
Inventors:Michael J. SullivanEdmund A. HebertNicholas M. NardacciDerek A. LaddBrian Fletcher
A63B 37/0004A63B 2043/001A63B 37/0003
55
PatentIndex Score
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Claims

Abstract

A golf ball comprising a core comprising from about 25 to 75 parts of butyl or halobutyl rubber and having a coefficient of restitution of 0.683 to 0.750 and a compression of less than about 60; an inner cover layer comprising an ionomer and having a Shore D hardness of at least about 60; and an outer cover layer comprising a polyurethane or polyurea having a Shore D hardness of less than about 55; wherein the golf ball has a dimple coverage of 55% to 75%, a coefficient of restitution of 0.696 to 0.775, and an Atti compression of at least about 80.

Claims

exact text as granted — not AI-modified
1 . A golf ball comprising:
 a core comprising from about 25 to 75 parts of butyl or halobutyl rubber and having a coefficient of restitution of 0.683 to 0.750 and a compression of less than about 60;   an inner cover layer comprising an ionomer and having a Shore D hardness of at least about 60;   and an outer cover layer comprising a polyurethane or polyurea having a Shore D hardness of less than about 55;   wherein the golf ball has a dimple coverage of 55% to 75%, a coefficient of restitution of 0.696 to 0.775, and an Atti compression of at least about 80.   
   
   
       2 . The golf ball of  claim 1 , wherein the golf ball has an Atti compression of at least about 90. 
   
   
       3 . The golf ball of  claim 1 , wherein the core comprises an inner core layer and an outer core layer. 
   
   
       4 . The golf ball of  claim 3 , wherein the inner core has a compression of less than 50. 
   
   
       5 . The golf ball of  claim 4 , wherein the inner core has a compression of less than about 40. 
   
   
       6 . The golf ball of  claim 5 , wherein the inner core has a compression of less than about 30. 
   
   
       7 . The golf ball of  claim 3 , wherein the inner core comprises about 90 to 40 parts of polybutadiene rubber. 
   
   
       8 . The golf ball of  claim 1 , wherein the golf ball has a weight of about 1.39 oz to about 1.62 oz, and at a Reynolds number of about 230,000 and a non-dimensional spin ratio of about 0.085, the golf ball has a lift-to-weight ratio of greater than about 1.9 and a drag-to-weight ratio of greater than about 3.0. 
   
   
       9 . The golf ball of  claim 1 , wherein the golf ball has a weight of about 1.39 oz to about 1.62 oz, and at a Reynolds number of about 207,000 and a non-dimensional spin ratio of about 0.095, the golf ball has a lift-to-weight ratio of greater than about 1.7 and a drag-to-weight ratio of greater than about 2.4. 
   
   
       10 . The golf ball of  claim 1 , wherein the golf ball weight is from about 1.50 oz to about 1.62 oz. 
   
   
       11 . The golf ball of  claim 10 , wherein the golf ball weight is from about 1.60 oz to about 1.62 oz. 
   
   
       12 . The golf ball of  claim 1 , wherein the ionomer has a Shore D hardness of at least about 64.

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