US2007093319A1PendingUtilityA1

High Performance Golf Ball Having a Reduced-Distance

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Individually held — no corporate assignee on recordPriority: Mar 14, 2002Filed: Dec 5, 2006Published: Apr 26, 2007
Est. expiryMar 14, 2022(expired)· nominal 20-yr term from priority
Inventors:Michael J. SullivanEdmund A. HebertNicholas M. NardacciDerek A. LaddBrian Fletcher
A63B 37/0021A63B 37/0004A63B 37/00065A63B 37/009A63B 37/0083A63B 2043/001A63B 37/0012A63B 37/0061A63B 37/0089A63B 37/008A63B 37/0003
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Claims

Abstract

A high performance golf ball having a reduced overall distance while maintaining the appearance of a high performance trajectory. The golf ball includes a combination of low CoR core and cover materials coupled with a less efficient aerodynamic dimple pattern that achieves a reduction in carry and overall distance of at least 5 yards versus a conventional golf ball, while still providing the look, sound, feel and apparent flight of a conventional golf ball. A high performance golf ball having a reduced distance is also achieved by maintaining the lift to weight ratio to be greater than 1.5 at a Reynolds number of about 205,000 and a spin rate of 2900 rpm.

Claims

exact text as granted — not AI-modified
1 . A golf ball comprising an inner core layer, an outer core layer, an inner cover layer and an outer cover layer wherein at least one of the inner core or outer core layer comprise from about 10 to 80 parts of butyl rubber, and wherein said golf ball has a coefficient of restitution of less than 0.780 and a compression of at least about 80.  
   
   
       2 . The golf ball of  claim 1 , wherein the inner core comprises from about 15 to 60 parts of butyl or halobutyl rubber and the outer core layer comprises about 0 to 40 parts of butyl or halobutyl rubber.  
   
   
       3 . The golf ball of  claim 1 , wherein the inner core has a compression of less than 50 and the overall core has a compression of at least 60.  
   
   
       4 . The golf ball of  claim 3 , wherein the inner core has a compression of less than about 40.  
   
   
       5 . The golf ball of  claim 1 , wherein the inner cover layer comprises an ionomer and has a Shore D hardness of at least about 60.  
   
   
       6 . The golf ball of  claim 1 , wherein the outer cover layer comprises a polyurethane or polyurea having a Shore D hardness of less than about 60.  
   
   
       7 . The golf ball of  claim 2 , wherein the inner core has a coefficient of restitution of less than 0.730 and a compression of less than 30, and wherein the ball has a compression of at least 90 and a coefficient of restitution of less than 0.775.  
   
   
       8 . The golf ball of  claim 7 , wherein the inner cover layer comprises an ionomer and has a Shore D hardness of at least about 60, and wherein the outer cover layer comprises a polyurethane or polyurea having a Shore D hardness of less than about 60.  
   
   
       9 . The golf ball of  claim 1 , wherein the outer cover layer comprises a plurality of dimples, and wherein the plurality of dimples covers less than about 78% of the surface area of the outer cover layer.  
   
   
       10 . The golf ball of  claim 9 , wherein the edge angles of the dimples range from about 10 to 18 degrees.  
   
   
       11 . The golf ball of  claim 5 , wherein the ionomer has a Shore D hardness of at least about 64.  
   
   
       12 . The golf ball of  claim 6 , wherein the polyurethane or polyurea has a hardness of less than 55.  
   
   
       13 . The golf ball of  claim 1 , wherein the golf ball weight is from about 1.50 to 1.62 ounces.  
   
   
       14 . The golf ball of  claim 13 , wherein the golf ball weight is from about 1.60 to 1.62 ounces.  
   
   
       15 . The golf ball of  claim 1 , wherein the golf ball has a lift to weight ratio greater than 1.5 at a Reynolds number of about 205,000 and a spin rate of about 2900 rpm.  
   
   
       16 . A golf ball comprising an inner core, an outer core layer, an inner cover layer and an outer cover layer wherein the inner core has a coefficient of restitution of less than 0.730 and a compression of less than about 30 and the golfball has a coefficient of restitution of less than 0.775 and a compression of at least about 90.  
   
   
       17 . The golf ball of  claim 16 , wherein the inner core comprises from about 10 to 60 parts of butyl or halobutyl rubber and about 90 to 40 parts of polybutadiene rubber.  
   
   
       18 . The golf ball of  claim 17 , wherein the inner cover layer comprises an ionomer having a Shore D hardness of at least about 60 and the outer cover layer comprises a polyurethane or polyunrea having a Shore D hardness of less than about 55.  
   
   
       19 . The golf ball of  claim 16 , wherein the golf ball has a lift to weight ratio greater than 1.5 at a Reynolds number of about 205,000 and a spin rate of about 2900 rpm.  
   
   
       20 . A golf ball comprising a core comprising from about 10 to 60 parts of butyl or halobutyl rubber and having a coefficient of restitution of less than 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, an outer cover layer comprising a polyurethane or polyurea having a Shore D hardness of less than about 55, said golf ball having a coefficient of restitution of less than 0.775 and a compression of at least about 90.  
   
   
       21 . The golf ball of  claim 20 , wherein the golf ball has a lift to weight ratio greater than 1.5 at a Reynolds number of about 205,000 and a spin rate of about 2900 rpm.  
   
   
       22 . A golf ball comprising: 
 an inner core layer, an outer core layer, and at least one cover layer, and    a means for reducing the distance traveled by the golf ball after impact.

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