Abstract:
A golf ball of improved playing characteristics weighing no more than 1.62 ounces and having a mean outside diameter of at least 1.70 inches. A dimple pattern on the surface of the ball may include a plurality of dimples which have different diameters. The dimples cover at least 65% of the surface of the ball.

Description:
This application is a continuation-in-part of U.S. patent application Ser. No. 08/171,956 filed Dec. 22, 1993, now U.S. Pat. No. 5,503,397. 
    
    
     This invention relates to golf balls. In particular, it relates to a two-piece golf ball having playability characteristics which are improved relative to state-of-the-art balls. 
     According to United States Golf Association (U.S.G.A.) rules, a golf ball may not have a weight in excess of 1.620 ounces or a diameter smaller than 1.680 inches. The initial velocity of U.S.G.A. &#34;regulation&#34; balls may not exceed 250 feet per second with a maximum tolerance of 2%. Initial velocity is measured on a standard machine kept by the U.S.G.A. A projection on a wheel rotating at a defined speed hits the test ball, and the length of time it takes the ball to traverse a set distance after impact is measured. U.S.G.A. regulations also require that a ball not travel a distance greater than 280 yards when hit by the U.S.G.A. outdoor driving machine under specified conditions. In addition to this specification, there is a tolerance of plus 4% and a 2% tolerance for test error. 
     These specifications limit how far a golf ball will travel when hit in several ways. Increasing the weight of a golf ball tends to increase the distance it will travel and lower the trajectory. A ball having greater momentum is better able to overcome drag. Reducing the diameter of the ball also has the effect of increasing the distance it will travel when hit. This is believed to occur primarily because a smaller ball has a smaller projected area and, thus, a lower drag when travelling through the air. Increasing initial velocity increases the distance the ball will travel. 
     The foregoing generalizations hold when the effect of size, weight, or initial velocity is measured in isolation. Flight characteristics (influenced by dimple pattern and ball rotation properties), club head speed, radius of gyration, and diverse other factors also influence the distance a ball will travel. 
     In the manufacture of top-grade golf balls for use by professional golfers and amateur golf enthusiasts, the distance a ball will travel when hit (hereinafter referred to as &#34;distance&#34;) is an important design criterion. Since the U.S.G.A. rules were established, golf ball manufacturers have designed top-grade U.S.G.A. regulation balls to be as close to the maximum weight, minimum diameter, and maximum initial velocity as golf ball technology will permit. The distance a ball will travel when hit has, however, been improved by changes in raw materials and by alternations in dimple configuration. 
     Golf balls not conforming to U.S.G.A. specifications in various respects have been made in the United States. Prior to the effective date of the U.S.G.A. rules, balls of various weights, diameters, and resiliencies were common. So-called &#34;rabbit balls,&#34; which claim to exceed the U.S.G.A. initial velocity limitations, have also been offered for sale. Recently, oversized, overweight golf balls have been on sale for use as golf teaching aids (see U.S. Pat. No. 4,201,384 to Barber). 
     Oversized golf balls are also disclosed in New Zealand Patent 192,618 dated Jan. 1, 1980, issued to a predecessor of the present assignee. This patent discloses an oversized golf ball having a diameter between 1.700 and 1.730 inches and an oversized core of resilient material so as to increase the coefficient of restitution. Additionally, the patent discloses that the ball should include a cover having a thickness less than the cover thickness of conventional balls. The patent has no disclosure as to dimple size or the percentage of surface coverage by the dimples. 
     Golf balls made by Spalding in 1915 were of a diameter ranging from 1.630 inches to 1.710 inches. While these balls had small shallow dimples, they covered less than 50% of the surface of the ball. Additionally, as the diameter of the ball increased, the weight of the ball also increased. 
     Golf balls known as the LYNX JUMBO were also produced and sold in October of 1979. This ball had a diameter of substantially 1.80 inches. The dimples on the LYNX JUMBO balls had 336 Atti-type dimples with each dimple having a diameter of 0.147 inch and a depth of 0.0148 inch. With this dimple arrangement, 56.02% of the surface area of the ball was covered by the dimples. This ball met with little or no commercial success. 
     Top-grade golf balls sold in the United States may be classified as one of two types: two-piece or three-piece. The two-piece ball, exemplified by the balls sold by Spalding Corporation under the trademark TOP-FLITE, consists of a solid polymeric core and a separately formed cover. The so-called three-piece balls, exemplified by the balls sold under the trademark TITLEIST by the Acushnet Company, consist of a liquid (e.g., TITLEIST TOUR 384) or solid (e.g., TITLEIST DT) center, elastomeric thread windings about the center, and a cover. Although the nature of the cover can, in certain instances, make a significant contribution to the overall coefficient of restitution and initial velocity of a ball (see, for example, U.S. Pat. No. 3,819,768 to Molitor), the initial velocity of two-piece and three-piece balls is determined mainly by the coefficient of restitution of the core. The coefficient of restitution of the core of wound balls can be controlled within limits by regulating the winding tension and the thread and center composition. With respect to two-piece balls, the coefficient of restitution of the core is a function of the properties of the elastomer composition from which it is made. Solid cores today are typically molded using polybutadiene elastomers mixed with acrylate or methacrylate metal salts. High-density fillers such as zinc oxide are included in the core material in order to achieve the maximum U.S.G.A. weight limit. 
     Improvements in cover and core material formulations and changes in dimple patterns have more or less continually improved golf ball distance for the last 20 years. Top-grade golf balls, however, must meet several other important design criteria. To successfully compete in today&#39;s golf ball market, a golf ball should be resistant to cutting and must be finished well; it should hold a line in putting and should have good click and feel. With a well-designed ball, experienced players can better execute shots involving draw, fade, or abrupt stops, as the situation dictates. 
     SUMMARY OF THE INVENTION 
     The golf ball of the present invention provides an improvement over previously proposed oversized golf balls. The present ball, even though of a larger diameter of at least 1.70 inches, preferably uses substantially the same size core as a standard golf ball, with the difference in size being provided by additional thickness in the cover of the ball. The enlarged ball includes dimples which cover at least 65% of the surface of the ball, which enhances the flight characteristics of the ball. It has been found that large diameter shallow dimples further enhance the flight characteristics of the golf ball as opposed to the use of a large number of small diameter dimples. 
     In addition to allowing the use of larger diameter dimples, the larger diameter ball provides a moment which is greater than the conventional ball. This greater moment reveals itself by having a lower backspin rate after impact than the conventional ball. Such a lower backspin rate contributes to straighter shots, greater efficiency in flight, and a lesser degree of energy loss on impact with the ground. On impact with the ground, all balls reverse their spin from backspin to over-spin; hence, having lower backspin on impact, less energy is absorbed in this reversal than with conventional balls. This is especially true with woods because of the lower trajectory resulting from a lower backspin. As a result, the ball strikes the ground at a more acute angle, adding increased roll or distance. 
     The present ball provides additional control due to the enlarged size of the ball and dimple coverage while still maintaining maximum performance standards as compared to a standard ball. 
     The advantages of the present invention will be more clearly understood from the following description taken together with the drawings. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 illustrates a partially broken-away view of an embodiment of the improved golf ball of the present invention; 
     FIG. 2 illustrates dimple diameter and depth measurements; 
     FIG. 3 discloses a golf ball of the dimensions as shown in FIG. 1 with a particular dimple configuration; 
     FIG. 4 is a schematic illustration showing dimple size and location of the repetitive sections of the golf ball of FIG. 2; 
     FIG. 5 is a modified dimple pattern of the present invention; 
     FIG. 6 is a further modified dimple pattern of the present invention; and 
     FIG. 7 is a further modified dimple pattern of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The following description relates to several particular embodiments of the golf ball of the present invention, but the concept of the present invention is not to be limited to such embodiments. It should be noted that all of the specific dimensions set forth have a manufacturing tolerance of ±0.05%. Additionally, all of the balls have a weight no greater than 1.62 ounces. 
     The diameter of the ball is substantially between 1.70 and 1.80 inches. When dimples having different diameters and depths are used, weighted average dimple diameter is used in relation to the following parameters. Obviously, when all the dimples used are of the same diameter and depth, the weighted average diameter and depth is the same as each dimple diameter and depth. The weighted average diameter of the dimples covering the ball is substantially between 0.100 and 0.190 inch, preferably between 0.135 and 0.170 inch, with the preferred weighted average dimple diameter being between 0.139 and 0.155 inch. The weighted average depth of the dimples covering the ball is between 0.005 and 0.015 inch, preferably between 0.009 and 0.013 inch, with the preferred depth being between 0.010 and 0.011 inch. 
     Referring to FIG. 1, there is disclosed a ball having an oversized diameter D as compared to the diameter of a standard ball. The ball has a core of a diameter C and a cover of a thickness T. As opposed to previously proposed golf balls such as that disclosed in the above-mentioned New Zealand patent, the present invention does not use an over-size core in the oversized golf ball. In the particular ball used for illustrative purposes, the nominal diameter of the ball is 1,717±0.010 inches, the diameter of the core is 1.545±0.010 inches, and the cover thickness is 0.086±0.010 inch. 
     The dimple pattern discussed above provides coverage of between 65% and 85% of the surface of the ball. It should be noted that if maximum possible coverage is desired, non-circular dimples can be used to fill in open surface areas which may remain after the basic dimple pattern is determined. 
     The core uses conventional ingredients, but is adjusted to produce a softer center. The total amount of filler, and, thus specific gravity, is less than the standard ball since the larger ball must weigh the same as the standard ball. The cover of the ball, while being substantially thicker, is made of the standard cover material used in most two-piece golf balls. 
     Referring to FIGS. 3 and 4, there is shown a ball having the enlarged dimensions of the present invention and having a dimple pattern including 422 dimples, which includes dimples of three different diameters and depths measured in accordance with FIG. 2. As indicated in FIG. 4, the largest dimple diameter is 0.169 inch with a dimple depth of 0.0123 inch, the intermediate dimple diameter is 0.157 inch with a dimple depth of 0.0123 inch, and the smallest dimple diameter is 0.145 inch with a dimple depth of 0.0101 inch. With the pattern shown, the resultant weighted average dimple diameter is 0.1478 inch and the weighted average dimple depth is 0.0104 inch. With this configuration and dimple size, 78.4% of the surface area of the ball is covered by dimples without any dimple overlap. The ball of FIG. 3 includes repeating patterns about each hemisphere, with the hemispheres being identical. One of such patterns is shown in FIG. 4, which indicates the arrangement of dimples and the relative sizes of the dimples in that particular pattern. 
     Comparative tests were made using the ball of the present invention and a Spalding TOP-FLITE II ball; results of the tests were as follows: 
     
         ______________________________________TEST NO. 1CLUB: U.S.G.A. DRIVER/CLUB HEAD SPEED: 160 fpsBALL TYPE    TOP FLITE II                    BALL OF FIGS. 3 &amp; 4______________________________________Trajectory   10.60       10.40Flight Time  5.90        5.70Carry        249.40      244.20Difference in Carry        00.00       -5.30Deviation    -6.14       -2.72Roll         30.60       35.20Total Distance        280.00      279.40Difference in Roll        00.00       -0.70______________________________________ 
    
     
         ______________________________________TEST NO. 2CLUB: U.S.G.A. DRIVER/CLUB HEAD SPEED: 145 fpsBALL TYPE    TOP FLITE II                    BALL OF FIGS. 3 &amp; 4______________________________________Trajectory   9.70        9.60Flight Time  5.40        5.20Carry        218.10      214.50Difference in carry        0.00        -3.60Deviation    -6.03       -1.92Roll         32.90       37.90Total Distance        250.90      252.40Difference in Roll        -1.50       0.00______________________________________ 
    
     
         ______________________________________TEST NO. 3CLUB: 5-IRON/CLUB HEAD SPEED: 120 fpsBALL TYPE    TOP FLITE II                    BALL OF FIGS. 3 &amp; 4______________________________________Trajectory   N/A         N/AFlight Time  5.90        6.00Carry        165.50      168.00Difference in Carry        -3.20       -0.80Deviation    -1.58       -0.75Roll         12.70       13.20Total Distance        178.20      181.10Difference in Roll        -3.00       -0.10______________________________________ 
    
     The following is a comparison of the ball of the present invention to that of a TOP-FLITE II ball: 
     
         ______________________________________BALL           FIGS. 3 &amp; 4                     TOP-FLITE II______________________________________Ball Diameter  1.717      1.685Center Diameter          1.545      1.545Ball Weight (Grams)          45.500     45.500Cover Thickness          0.086      0.070Center Weight (Grams)          34.400     36.470Cover Weight (Grams)          11.100     9.030Cover (Grams/cm.sup.2)          31.897     25.400Center (Grams/cm.sup.2)          52.976     56.200Moment (Grams/cm.sup.2)          84.870     81.600Moment (Ounces/in.sup.2)          0.464      0.446______________________________________ 
    
     As can be seen, the ball of FIGS. 3 and 4 compares favorably with the TOP-FLITE II as the control ball when a driver is used, but is superior to the control ball when a 5-iron is used. Thus, there is achieved substantially maximum performance while still having a ball that is more easily controlled because of the additional surface of the ball. 
     It was also determined that the golf ball of the present invention as particularly illustrated in FIGS. 3 and 4 has a lower spin rate in r.p.m. than the standard balls which are in use today. This test is determined by using an automatic driving machine which uses a full 9-iron. The results of this test are as follows: 
     
         ______________________________________             SPIN RATE RPMBALL TYPE         (Average)______________________________________TITLEIST 384 TOUR 100             9,773TOUR EDITION 100  10,905TOUR EDITION 90   10,405TOP-FLITE II      9,501BALL OF FIGS. 2 &amp; 3             9,210______________________________________ 
    
     The following are the coordinates of the dimple pattern of the ball of FIGS. 3 and 4, indicating dimple location and diameter for each dimple on one of the hemispheres of the ball: 
     
         __________________________________________________________________________DIMPLE LATITUDE       LONGITUDE      DIMPLENUMBER Degrees      Minutes           Seconds                Degrees                     Minutes                          Seconds                               DIAMETER__________________________________________________________________________1     0    0    0    0    0    0    0.14502     9    42   45   36   0    0    0.14503     9    42   45   108  0    0    0.14504     9    42   45   180  0    0    0.14505     9    42   45   252  0    0    0.14506     9    42   45   324  0    0    0.14507     16   15   45   0    0    0    0.14508     16   15   45   72   0    0    0.14509     16   15   45   144  0    0    0.145010    16   15   45   216  0    0    0 145011    16   15   45   288  0    0    0.145012    19   26   0    36   0    0    0.145013    19   26   0    108  0    0    0.145014    19   26   0    180  0    0    0.145015    19   26   0    252  0    0    0.145016    19   26   0    324  0    0    0.145017    25   18   0    13   26   0    0.145018    25   18   0    58   34   0    0.145019    25   18   0    85   26   0    0.145020    25   18   0    130  34   0    0.145021    25   18   0    157  26   0    0.145022    25   18   0    202  34   0    0.145023    25   18   0    229  26   0    0.145024    25   18   0    274  34   0    0.145025    25   18   0    301  26   0    0.145026    25   18   0    346  34   0    0.145027    29   19   0    36   0    0    0.145028    29   19   0    108  0    0    0.145029    29   19   0    180  0    0    0.145030    29   19   0    252  0    0    0.145031    29   19   0    324  0    0    0.145032    34   33   30   19   50   0    0.140033    34   33   30   52   10   0    0.145034    34   33   30   91   50   0    0.145035    34   33   30   124  10   0    0.145036    34   33   30   163  50   0    0.145037    34   33   30   196  10   0    0.145038    34   33   39   235  50   0    0.145039    34   33   30   268  10   0    0.145040    34   33   30   307  50   0    0.145041    34   33   30   340  10   0    0.145042    36   52   30   0    0    0    0.169043    36   52   30   72   0    0    0.169044    36   52   30   144  0    0    0.169045    36   52   30   216  0    0    0.169046    36   52   30   288  0    0    0.169047    39   2    45   36   0    0    0.145048    39   2    45   108  0    0    0.145049    39   2    45   180  0    0    0.145050    39   2    45   252  0    0    0.145051    39   2    45   324  0    0    0.145052    44   9    30   23   33   15   0.145053    44   9    30   48   26   45   0.145054    44   9    30   95   33   15   0.145055    44   9    30   120  26   45   0.145056    44   9    30   167  33   15   0.145057    44   9    30   192  26   45   0.145058    44   9    30   239  33   15   0.145059    44   9    30   264  26   45   0.145060    44   9    30   311  33   15   0.145061    44   9    30   336  26   45   0.145062    46   50   15   8    34   45   0.169063    46   50   15   63   25   15   0.169064    46   50   15   80   34   45   0.169065    46   50   15   135  25   15   0.169066    46   50   15   152  34   45   0.169067    46   50   15   207  25   15   0.169068    46   50   15   224  34   45   0.169069    46   50   15   279  25   15   0.169070    46   50   15   296  34   45   0.169071    46   50   15   351  25   15   0.169072    48   55   0    36   0    0    0.145073    48   55   0    108  0    0    0.145074    48   55   0    180  0    0    0.145075    48   55   0    252  0    0    0.145076    48   55   0    324  0    0    0.145077    53   50   15   25   15   45   0.145078    53   50   15   46   44   15   0.145079    53   50   15   97   15   45   0.145080    53   50   15   118  44   15   0.145081    53   50   15   169  15   45   0.145082    53   50   15   190  44   15   0.145083    53   50   15   241  15   45   0.145084    53   50   15   262  44   15   0.145085    53   50   15   313  15   45   0.145086    53   50   15   334  44   15   0.145087    56   37   30   0    0    0    0.169088    56   37   30   72   0    0    0.169089    56   37   30   144  0    0    0.169090    56   37   30   216  0    0    0.169091    56   37   30   288  0    0    0.169092    57   12   0    13   39   0    0.157093    57   12   0    58   21   0    0.157094    57   12   0    85   39   0    0.157095    57   12   0    130  21   0    0.157096    57   12   0    157  39   0    0.157097    57   12   0    202  21   0    0.157098    57   12   0    229  39   0    0.157099    57   12   0    274  21   0    0.1570100   57   12   0    301  39   0    0.1570101   57   12   0    346  21   0    0.1570102   58   39   15   36   0    0    0.1450103   58   39   15   108  0    0    0.1450104   58   39   15   180  0    0    0.1450105   58   39   15   252  0    0    0.1450106   58   39   15   324  0    0    0.1450107   63   51   30   26   25   15   0.1450108   63   51   30   45   34   45   0.1450109   63   51   30   98   25   15   0.1450110   63   51   30   117  34   45   0.1450111   63   51   30   170  25   15   0.1450112   63   51   30   189  34   45   0.1450113   63   51   30   242  25   15   0.1450114   63   51   30   261  34   45   0.1450115   63   51   30   314  25   15   0.1450116   63   51   30   333  34   45   0.1450117   66   36   0    5    24   0    0.1450118   66   36   0    66   36   0    0.1450119   66   36   0    77   24   0    0.1450120   66   36   0    138  36   0    0.1450121   66   36   0    149  24   0    0.1450122   66   36   0    210  36   0    0.1450123   66   36   0    221  24   0    0.1450124   66   36   0    282  36   0    0.1450125   66   36   0    293  24   0    0.1450126   66   36   0    354  36   0    0.1450127   67   4    30   16   5    30   0.1450128   67   4    30   55   54   30   0.1450129   67   4    30   88   5    30   0.1450130   67   4    30   127  54   30   0.1450131   67   4    30   160  5    30   0.1450132   67   4    30   199  54   30   0.1450133   67   4    30   232  5    30   0.1450134   67   4    30   271  54   30   0.1450135   67   4    30   304  5    30   0.1450136   67   4    30   343  54   30   0.1450137   68   20   30   36   0    0    0.1450138   68   20   30   108  0    0    0.1450139   68   20   30   180  0    0    0.1450140   68   20   30   252  0    0    0.1450141   68   20   30   324  0    0    0.1450142   75   24   30   0    0    0    0.1450143   75   24   30   72   0    0    0.1450144   75   24   30   144  0    0    0.1450145   75   24   30   216  0    0    0.1450146   75   24   30   288  0    0    0.1450147   75   42   0    10   20   45   0.1450148   75   42   0    61   39   15   0.1450149   75   42   0    82   20   45   0.1450150   75   42   0    133  39   15   0.1450151   75   42   0    154  20   45   0.1450152   75   42   0    205  39   15   0.1450153   75   42   0    226  20   45   0.1450154   75   42   0    277  39   15   0.1450155   75   42   0    298  20   45   0.1450156   75   42   0    349  39   15   0.1450157   76   14   0    20   20   0    0.1450158   76   14   0    51   40   0    0.1450159   76   14   0    92   20   0    0.1450160   76   14   0    123  40   0    0.1450161   76   14   0    164  20   0    0.1450162   76   14   0    195  40   0    0.1450163   76   14   0    236  20   0    0.1450164   76   14   0    267  40   0    0.1450165   76   14   0    308  20   0    0.1450166   76   14   0    339  40   0    0.1450167   76   26   15   30   22   15   0.1450168   76   26   15   41   37   45   0.1450169   76   26   15   102  22   15   0.1450170   76   26   15   113  37   45   0.1450171   76   26   15   174  22   15   0.1450172   76   26   15   185  37   45   0.1450173   76   26   15   246  22   15   0.1450174   76   26   15   257  37   45   0.1450175   76   26   15   318  22   15   0.1450176   76   26   15   329  37   45   0.1450177   86   1    15   5    8    30   0.1450178   86   1    15   15   25   45   0.1450179   85   1    15   25   42   45   0.1450180   85   1    15   36   0    0    0.1450181   85   1    15   46   17   15   0.1450182   85   1    15   56   34   15   0.1450183   85   1    15   66   51   30   0.1450184   85   1    15   77   8    30   0.1450185   85   1    15   87   25   45   0.1450186   85   1    15   97   42   45   0.1450187   85   1    15   108  0    0    0.1450188   85   1    15   118  17   15   0.1450189   85   1    15   128  34   15   0.1450190   85   1    15   138  51   30   0.1450191   85   1    15   149  8    30   0.1450192   85   1    15   159  25   45   0.1450193   85   1    15   169  42   45   0.1450194   85   1    15   180  0    0    0.1450195   85   1    15   190  17   15   0.1450196   85   1    15   200  34   15   0.1450197   85   1    15   210  51   30   0.1450198   85   1    15   221  8    30   0.1450199   85   1    15   231  25   45   0.1450200   85   1    15   241  42   45   0.1450201   85   1    15   252  0    0    0.1450202   85   1    15   262  17   15   0.1450203   85   1    15   272  34   15   0.1450204   85   1    15   282  51   30   0.1450205   85   1    15   293  8    30   0.1450206   85   1    15   303  25   45   0.1450207   85   1    15   313  42   45   0.1450208   85   1    15   324  0    0    0.1450209   85   1    15   334  17   15   0.1450210   85   1    15   344  34   15   0.1450211   85   1    15   354  51   30   0.1450__________________________________________________________________________ 
    
     The ball of FIGS. 3 and 4 illustrates that the dimple pattern on the ball is made up of a plurality of triangles 15, 17 and 19 which comprise a modified icosahedron. The dimples are arranged on the ball in order to obtain maximum surface coverage of the ball, with the largest dimples 33, intermediate dimples 35, and smaller dimples 31 being located as shown relative to lines 15, 17, and 19 of the triangles. Lines 21, 23, and 24 are extensions of a further triangle to the equatorial line of the ball. This is the same arrangement of dimples as that of the Spalding TOP-FLITE PLUS II ball shown and described in U.S. patent application Ser. No. 07/384,205, assigned to the assignee of the present invention. The description and the manner of locating the dimples as set forth in that application is incorporated herein. 
     A further ball which uses the same basic pattern of FIGS. 3 and 4 has 10 of the largest diameter dimples, 50 of the intermediate size dimples, and 362 of the smallest diameter dimples. The largest dimple diameter is 0.169 inch with a depth of 0.0123 inch, the intermediate dimple diameter is 0.157 inch with a depth of 0.0123 inch, and the smallest dimple diameter is 0.145 inch with a depth of 0.0101 inch. Thus, the dimple depths of the three different diameter dimples remain the same as the ball of FIGS. 2 and 3. This modification provides a coverage with no dimple overlap while maintaining a 77.4% coverage of the surface area of the ball. The weighted average dimple diameter for this ball is 0.1470 inch and the weighted average dimple depth is 0.0104 inch. 
     Another ball which uses the same basic pattern of FIGS. 3 and 4 has 10 of the largest diameter dimples, 50 of the intermediate size dimples, and 362 of the smallest diameter dimples. This pattern has a modified dimple diameter wherein the largest diameter is 0.169 inch with a depth of 0.0128 inch, the intermediate dimple diameter is 0.157 inch with a depth of 0.0128 inch, and the smallest dimple diameter is 0.145 inch. In this ball, 222 of the smallest diameter. dimples nearest the poles have a depth of 0.0106 inch and the remaining 140 of the smallest diameter dimples have a depth of 0.0096 inch. The remaining intermediate and large diameter dimples have a depth of 0.0128 inch. This modification provides a ball with no dimple overlap while maintaining a 77.4% coverage of the surface area of the ball. The weighted average dimple diameter for this ball is 0.1470 inch and the weighted average dimple depth is 0.01058 inch. 
     The following are the coordinates for the dimple pattern of the above two balls having 10 large dimples, 50 intermediate dimples, and 362 small dimples: 
     
         __________________________________________________________________________DIMPLE LATITUDE       LONGITUDE      DIMPLENUMBER Degrees      Minutes           Seconds                Degrees                     Minutes                          Seconds                               DIAMETER__________________________________________________________________________1     0    0    0    0    0    0    0.1452     9    42   45   36   0    0    0.1453     9    42   45   108  0    0    0.1454     9    42   45   180  0    0    0.1455     9    42   45   252  0    0    0.1456     9    42   45   324  0    0    0.1457     16   15   45   0    0    0    0.1458     16   15   45   72   0    0    0.1459     16   15   45   144  0    0    0.14510    16   15   45   216  0    0    0.14511    16   15   45   288  0    0    0.14512    19   26   0    36   0    0    0.14513    19   26   0    108  0    0    0.14514    19   26   0    180  0    0    0.14515    19   16   0    252  0    0    0.14516    19   26   0    324  0    0    0.14517    25   18   0    13   26   0    0.14518    25   18   0    58   34   0    0.14519    25   18   0    85   26   0    0.14520    25   18   0    130  34   0    0.14521    25   18   0    157  26   0    0.14522    25   18   0    202  34   0    0.14523    25   18   0    229  26   0    0.14524    25   18   0    274  34   0    0.14525    25   18   0    301  26   0    0.14526    25   18   0    346  34   0    0.14527    29   19   0    36   0    0    0.14528    29   19   0    108  0    0    0.14529    29   19   0    180  0    0    0.14530    29   19   0    252  0    0    0.14531    29   19   0    324  0    0    0.14532    34   33   30   19   50   0    0.14533    34   33   30   52   10   0    0.14534    34   33   30   91   50   0    0.14535    34   33   39   124  10   0    0.14536    34   33   30   163  50   0    0.14537    34   33   30   196  10   0    0.14538    34   33   30   235  50   0    0.14539    34   33   30   268  10   0    0.14540    34   33   30   307  50   0    0.14541    34   33   30   340  10   0    0.14542    38   5    0    0    0    0    0.15743    38   5    0    72   0    0    0.15744    38   5    0    144  0    0    0.15745    38   5    0    216  0    0    0.15746    38   5    0    288  0    0    0.15747    39   2    45   36   0    0    0.14548    39   2    45   108  0    0    0.14549    39   2    45   180  0    0    0.14550    39   2    45   252  0    0    0.14551    39   2    45   324  0    0    0.14552    44   9    30   23   33   15   0.14553    44   9    30   48   26   45   0.14554    44   9    30   95   33   15   0.14555    44   9    30   120  26   45   0.14556    44   9    30   167  33   15   0.14557    44   9    30   192  26   45   0.14558    44   9    30   239  33   15   0.14559    44   8    39   264  26   45   0.14560    44   9    30   311  33   15   0.14561    44   9    30   336  26   45   0.14562    47   33   30   7    34   0    0.15763    47   33   30   64   26   0    0.15764    47   33   30   79   34   0    0.15765    47   33   30   136  26   0    0.15766    47   33   30   151  34   0    0.15767    47   33   30   208  26   0    0.15768    47   33   30   223  34   0    0.15769    47   33   30   280  26   0    0.15770    47   33   30   295  34   0    0.15771    47   33   30   352  26   0    0.15772    48   55   0    36   0    0    0.14573    48   55   0    108  0    0    0.14574    48   55   0    180  0    0    0.14575    48   55   0    252  0    0    0.14576    48   55   0    324  0    0    0.14577    53   50   15   25   15   45   0.14578    53   50   15   46   44   15   0.14579    53   50   15   97   15   45   0.14580    53   50   15   118  44   15   0.14581    53   50   15   169  15   45   0.14582    53   50   15   190  44   15   0.14583    53   50   15   241  15   45   0.14584    53   50   15   262  44   15   0.14585    53   50   15   313  15   45   0.14586    53   50   15   334  44   15   0.14587    57   12   0    13   39   0    0.15788    57   12   0    58   21   0    0.15789    57   12   0    85   39   0    0.15790    57   12   0    130  21   0    0.15791    57   12   0    157  39   0    0.15792    57   12   0    202  21   0    0.15793    57   12   0    229  39   0    0.15794    57   12   0    274  21   0    0.15795    57   12   0    301  39   0    0.15796    57   12   0    346  21   0    0.15797    58   35   15   0    0    0    0.16998    58   35   15   72   0    0    0.16999    58   35   15   144  0    0    0.169100   58   35   15   216  0    0    0.169101   58   35   15   288  0    0    0.169102   58   39   15   36   0    0    0.145103   58   39   15   108  0    0    0.145104   58   39   15   180  0    0    0.145105   58   39   15   252  0    0    0.145106   58   39   15   324  0    0    0.145107   63   51   30   26   25   15   0.145108   63   51   30   45   34   45   0.145109   63   51   30   98   25   15   0.145110   63   51   30   117  34   45   0.145111   63   51   30   170  25   15   0.145112   63   51   30   189  34   45   0.145113   63   51   30   242  25   15   0.145114   63   51   30   261  34   45   0.145115   63   51   30   314  25   15   0.145116   63   51   30   333  34   45   0.145117   67   4    30   16   5    30   0.145118   67   4    30   55   54   30   0.145119   67   4    30   88   5    30   0.145120   67   4    30   127  54   30   0.145121   67   4    30   160  5    30   0.145122   67   4    30   199  54   30   0.145123   67   4    30   232  5    30   0.145124   67   4    30   271  54   30   0.145125   67   4    30   304  5    30   0.145126   67   4    30   343  54   30   0.145127   67   56   0    5    39   0    0.145128   67   56   0    66   21   0    0.145129   67   56   0    77   39   0    0.145130   67   56   0    138  21   0    0.145131   67   56   0    149  39   0    0.145132   67   56   0    210  21   0    0.145133   67   56   0    221  39   0    0.145134   67   56   0    282  21   0    0.145135   67   56   0    283  39   0    0.145136   67   56   0    354  21   0    0.145137   68   20   30   36   0    0    0.145138   68   20   30   108  0    0    0.145139   68   20   30   180  0    0    0.145140   68   20   30   252  0    0    0.145141   68   20   30   324  0    0    0.145142   76   14   0    20   20   0    0.145143   76   14   0    51   40   0    0.145144   76   14   0    92   20   0    0.145145   76   14   0    123  40   0    0.145146   76   14   0    164  20   0    0.145147   76   14   0    195  40   0    0.145148   76   14   0    236  20   0    0.145149   76   14   0    267  40   0    0.145150   76   14   0    308  20   0    0.145151   76   14   0    339  40   0    0.145152   76   25   45   0    0    0    0.145153   76   25   45   72   0    0    0.145154   76   25   45   144  0    0    0.145155   76   25   45   216  0    0    0.145156   76   25   45   288  0    0    0.145157   76   26   15   30   22   15   0.145158   76   26   15   41   37   45   0.145159   76   26   15   102  22   15   0.145160   76   26   15   113  37   45   0.145161   76   26   15   174  22   15   0.145162   76   26   15   185  37   45   0.145163   76   26   15   246  22   15   0.145164   76   26   15   257  37   45   0.145165   76   26   15   318  22   15   0.145166   76   26   15   329  37   45   0.145167   76   42   45   10   18   0    0.145168   76   42   45   82   18   0    0.145169   76   42   45   154  18   0    0.145170   76   42   45   226  18   0    0.145171   76   42   45   298  18   0    0.145172   76   43   15   61   42   0    0.145173   76   43   15   133  42   0    0.145174   76   43   15   205  42   0    0.145175   76   43   15   277  42   0    0.145176   76   43   15   349  42   0    0.145177   85   1    15   5    8    30   0.145178   85   1    15   15   25   45   0.145179   85   1    15   25   42   45   0.145180   85   1    15   36   0    0    0.145181   85   1    15   46   17   15   0.145182   85   1    15   56   34   15   0.145183   85   1    15   66   51   30   0.145184   85   1    15   77   8    30   0.145185   85   1    15   87   25   45   0.145186   85   1    15   97   42   45   0.145187   85   1    15   108  0    0    0.145188   85   1    15   118  17   15   0.145189   85   1    15   128  34   15   0.145190   85   1    15   138  51   30   0.145191   85   1    15   149  8    30   0.145192   85   1    15   159  25   45   0.145193   85   1    15   169  42   45   0.145194   85   1    15   180  0    0    0.145195   85   1    15   190  17   15   0.145196   85   1    15   200  34   15   0.145197   85   1    15   210  51   30   0.145198   85   1    15   221  8    30   0.145199   85   1    15   231  25   45   0.145200   85   1    15   241  42   45   0.145201   85   1    15   252  0    0    0.145202   85   1    15   262  17   15   0.145203   85   1    15   272  34   15   0.145204   85   1    15   282  51   30   0.145205   85   1    15   293  8    30   0.145206   85   1    15   303  25   45   0.145207   85   1    15   313  42   45   0.145208   85   1    15   324  0    0    0.145209   85   1    15   334  17   15   0.145210   85   1    15   344  34   15   0.145211   85   1    15   354  51   30   0.145__________________________________________________________________________ 
    
     Yet another ball which uses the same basic pattern and dimple diameter of FIGS. 3 and 4 is modified as to dimple depth. The dimples on this ball have the same coordinates as the ball of FIGS. 2 and 3. In this ball, 222 of the smallest diameter dimples nearest the poles have a depth of 0.0106 inch and the remaining 140 of the smallest diameter dimples have a depth of 0.0096 inch. This modification provides a coverage with no dimple overlap while maintaining a 78.4% coverage of the surface area of the ball. The weighted average dimple diameter for this ball is 0.1478 inch and the weighted average dimple depth is 0.01058 inch. 
     A further modification is shown in FIG. 5. This golf ball has 410 dimples comprising 138 dimples having a diameter of 0.169 inch and a depth of 0.0116 inch, 160 dimples having a diameter of 0.143 inch and a depth of 0.0101 inch, and 112 dimples having a diameter of 0.112 inch and a depth of 0.0077 inch. The configuration of the dimples comprises a dimple-free equatorial line E--E dividing the ball into two hemispheres having substantially identical dimple patterns. The dimple pattern of each hemisphere comprises a first plurality of dimples extending in four spaced clockwise arcs between the pole and the equator of each hemisphere, a second plurality of dimples extending in four spaced counterclockwise arcs between the pole and equator of each hemisphere, and a third plurality of dimples filling the surface area between the first and second plurality of dimples. In this ball, none of the dimples overlap. This pattern provides a weighted average dimple diameter of 0.1433 inch, a weighted average dimple depth of 0.010 inch, and a 73.1% coverage of the surface of the ball. 
     The following are the coordinates of the 410 dimple pattern ball: 
     
         __________________________________________________________________________DIMPLE LATITUDE       LONGITUDE      DIMPLENUMBER Degrees      Minutes           Seconds                Degrees                     Minutes                          Seconds                               DIAMETER__________________________________________________________________________ 1     0    0   0    0    0    0    0.169 2    11   53   30    0    0   0    0.112 3    11   53   30   45   0    0    0.143 4    11   53   30   90   0    0    0.112 5    11   53   30   135  0    0    0.143 6    11   53   30   180  0    0    0.112 7    11   53   30   225  0    0    0.143 8    11   53   30   270  0    0    0.112 9    11   53   30   315  0    0    0.143 10   18   32   0    19   6    45   0.112 11   18   32   0    70   53   15   0.112 12   18   32   0    109  6    45   0.112 13   18   32   0    160  53   15   0.112 14   18   32   0    199  6    45   0.112 15   18   32   0    250  53   15   0.112 16   18   32   0    289  6    45   0.112 17   18   32   0    340  53   15   0.112 18   22   24   0    45   0    0    0.169 19   22   24   0    135  0    0    0.169 20   22   24   0    225  0    0    0.169 21   22   24   0    315  0    0    0.169 22   23   27   45   0    0    0    0.112 23   23   27   45   90   0    0    0.112 24   23   27   45   180  0    0    0.112 25   23   27   45   270  0    0    0.112 26   28   45   15   25   39   0    0.143 27   28   45   15   64   21   0    0.143 28   28   45   15   115  39   0    0.143 29   28   45   15   154  21   0    0.143 30   28   45   15   205  39   0    0.143 31   28   45   15   244  21   0    0.143 32   28   45   15   295  39   0    0.143 33   28   45   15   334  21   0    0.143 34   30   53   45   8    17   0    0.112 35   30   53   45   81   43   0    0.112 36   30   53   45   98   17   0    0.112 37   30   53   45   171  43   0    0.112 38   30   53   45   188  17   0    0.112 39   30   53   45   261  43   0    0.112 40   30   53   45   278  17   0    0.112 41   30   53   45   351  43   0    0.112 42   33   55   45   45   0    0    0.169 43   33   55   45   135  0    0    0.169 44   33   55   45   225  0    0    0.169 45   33   55   45   315  0    0    0.169 46   37   40   15   0    0    0    0.112 47   37   40   15   90   0    0    0.112 48   37   40   15   180  0    0    0.112 49   37   40   15   270  0    0    0.112 50   38   13   15   28   43   0    0.143 51   38   13   15   61   17   0    0.143 52   38   13   15   118  43   0    0.143 53   38   13   15   151  17   0    0.143 54   38   13   15   208  43   0    0.143 55   38   13   15   241  17   0    0.143 56   38   13   15   298  43   0    0.143 57   38   13   15   331  17   0    0.143 58   41    7   30   13   57   0    0.143 59   41    7   30   76   3    0    0.143 60   41    7   30   103  57   0    0.143 61   41    7   30   166  3    0    0.143 62   41    7   30   193  57   0    0.143 63   41    7   30   256  3    0    0.143 64   41    7   30   283  57   0    0.143 65   41    7   30   346  3    0    0.143 66   44   31   0    39   0    15   0.112 67   44   31   0    50   59   45   0.112 68   44   31   0    129  0    15   0.112 69   44   31   0    140  59   45   0.112 70   44   31   0    219  0    15   0.112 71   44   31   0    230  59   45   0.112 72   44   31   0    309  0    15   0.112 73   44   31   0    320  59   45   0.112 74   47   47   15   0    0    0    0.143 75   47   47   15   90   0    0    0.143 76   47   47   15   180  0    0    0.143 77   47   47   15   270  0    0    0.143 78   49   27   0    21   28   45   0.143 79   49   27   0    68   31   15   0.143 80   49   27   0    111  28   45   0.143 81   49   27   0    158  31   15   0.143 82   49   27   0    201  28   45   0.143 83   49   27   0    248  31   15   0.143 84   49   27   0    291  28   45   0.143 85   49   27   0    338  31   15   0.143 86   52   21   45   33   13   15   0.143 87   52   21   45   56   46   45   0.143 88   52   21   45   123  13   15   0.143 89   52   21   45   146  46   45   0.143 90   52   21   45   213  13   15   0.143 91   52   21   45   236  46   45   0.143 92   52   21   45   303  13   15   0.143 93   52   21   45   326  46   45   0.143 94   53   30   15   10   15   45   0.143 95   53   30   15   79   44   15   0.143 96   53   30   15   100  15   45   0.143 97   53   30   15   169  44   15   0.143 98   53   30   15   190  15   45   0.143 99   53   30   15   259  44   15   0.143100   53   30   15   280  15   45   0.143101   53   30   15   349  44   15   0.143102   56   28   15   45   0    0    0.169103   56   28   15   135  0    0    0.169104   56   28   15   225  0    0    0.169105   56   28   15   315  0    0    0.169106   58   51   0    0    0    0    0.143107   58   51   0    90   0    0    0.143108   58   51   0    180  0    0    0.143109   58   51   0    270  0    0    0.143110   61    8   30   24   2    0    0.169111   61    8   30   65   58   0    0.169112   61    8   30   114  2    0    0.169113   61    8   30   155  58   0    0.169114   61    8   30   204  2    0    0.169115   61    8   30   245  58   0    0.169116   61    8   30   294  2    0    0.169117   61    8   30   335  58   0    0.169118   64   13   0    11   20   30   0.169119   64   13   0    78   39   30   0.169120   64   13   0    101  20   30   0.169121   64   13   0    168  39   30   0.169122   64   13   0    191  20   30   0.169123   64   13   0    258  39   30   0.169124   64   13   0    281  20   30   0.169125   64   13   0    348  39   30   0.169126   65    4   15   34   34   15   0.112127   65    4   15   55   25   45   0.112128   65    4   15   124  34   15   0.112129   65    4   15   145  25   45   0.112130   65    4   15   214  34   15   0.112131   65    4   15   235  25   45   0.112132   65    4   15   304  34   15   0.112133   65    4   15   325  25   45   0.112134   67   50   15   45   0    0    0.169135   67   50   15   135  0    0    0.169136   67   50   15   225  0    0    0.169137   67   50   15   315  0    0    0.169138   69   25   30   0    0    0    0.143139   69   25   30   90   0    0    0.143140   69   25   30   180  0    0    0.143141   69   25   30   270  0    0    0.143142   72   42   30   21   18   0    0.169143   72   42   30   68   42   0    0.169144   72   42   30   111  18   0    0.169145   72   42   30   158  42   0    0.169146   72   42   30   201  18   0    0.169147   72   42   30   248  42   0    0.169148   72   42   30   291  18   0    0.169149   72   42   30   338  42   0    0.169150   74   42   0    33   5    0    0.169151   74   42   0    56   55   0    0.169152   74   42   0    123  5    0    0.169153   74   42   0    146  55   0    0.169154   74   42   0    213  5    0    0.169155   74   42   0    236  55   0    0.169156   74   42   0    303  5    0    0.169157   74   42   0    326  55   0    0.169158   75   34   0    9    26   30   0.169159   75   34   0    80   33   30   0.169160   75   34   0    99   26   30   0.169161   75   34   0    170  33   30   0.169162   75   34   0    189  26   30   0.169163   75   34   0    260  33   30   0.169164   75   34   0    279  26   30   0.169165   75   34   0    350  33   30   0.169166   79    8   15   45   0    0    0.169167   79    8   15   135  0    0    0.169168   79    8   15   225  0    0    0.169169   79    8   15   315  0    0    0.169170   79   18   0    0    0    0    0.112171   79   18   0    90   0    0    0.112172   79   18   0    180  0    0    0.112173   79   18   0    270  0    0    0.112174   83   47   15   24   36   45   0.169175   83   47   15   65   23   15   0.169176   83   47   15   114  36   45   0.169177   83   47   15   155  23   15   0.169178   83   47   15   204  36   45   0.169179   83   47   15   245  23   15   0.169180   83   47   15   294  36   45   0.169181   83   47   15   335  23   15   0.169182   84   46   45   35   54   15   0.143183   84   46   45   54   5    45   0.143184   84   46   45   125  54   15   0.143185   84   46   45   144  5    45   0.143186   84   46   45   215  54   15   0.143187   84   46   45   234  5    45   0.143188   84   46   45   305  54   15   0.143189   84   46   45   324  5    45   0.143190   85    0   15   14   6    30   0.143191   85    0   15   75   53   30   0.143192   85    0   15   104  6    30   0.143193   85    0   15   165  53   30   0.143194   85    0   15   194  6    30   0.143195   85    0   15   255  53   30   0.143196   85    0   15   284  6    30   0.143197   85    0   15   345  53   30   0.143198   85   39   15   4    54   15   0.112199   85   39   15   85   5    45   0.112200   85   39   15   94   54   15   0.112201   85   39   15   175  5    45   0.112202   85   39   15   184  54   15   0.112203   85   39   15   265  5    45   0.112204   85   39   15   274  54   15   0.112205   85   39   15   355  5    45   0.112__________________________________________________________________________ 
    
     A still further modification is shown in FIG. 6. This golf ball has 422 dimples, all dimples having the same diameter of 0.143 inch and the same depth of 0.0103 inch. The dimples are arranged in a configuration so as to provide a dimple-free equatorial line, with each hemisphere of the ball having six identical dimpled substantially mating sections with a common dimple at each pole. FIG. 6 shows two mating sections having dimples 1 and 2, respectively. Each section comprises six dimples lying substantially along a line parallel with but spaced from the equatorial line, 29 dimples between the six dimples and the common polar dimple, with the outer dimples of each of said sections lying on modified sinusoidal lines 113 and 115. 
     Since only one diameter is used for all dimples, some small percentage of overlap occurs in order to provide substantial surface coverage with the dimples. For this particular pattern, there is an 11.4% (48) dimple overlap with a 73.2% coverage of the surface area of the ball. Overlap is determined by finding the number of dimples having an edge overlapping any other dimple and dividing that number by the total number of dimples on the ball, such number being expressed as a percentage. 
     The following are the coordinates for the dimple pattern of the 422 dimple ball having one size of dimples: 
     
         __________________________________________________________________________DIMPLE LATITUDE       LONGITUDE      DIMPLENUMBER Degrees      Minutes           Seconds                Degrees                     Minutes                          Seconds                               DIAMETER__________________________________________________________________________ 1    0    0    0    30   0    0    0.143 2    10   25   0    30   0    0    0.143 3    10   25   0    90   0    0    0.143 4    10   25   0    150  0    0    0.143 5    10   25   0    210  0    0    0.143 6    10   25   0    270  0    0    0.143 7    10   25   0    330  0    0    0.143 8    18   17   45   0    0    0    0.143 9    18   17   45   60   0    0    0.143 10   18   17   45   120  0    0    0.143 11   18   17   45   180  0    0    0.143 12   18   17   45   240  0    0    0.143 13   18   17   45   300  0    0    0.143 14   20   49   45   30   0    0    0.143 15   20   49   45   90   0    0    0.143 16   20   49   45   150  0    0    0.143 17   20   49   45   210  0    0    0.143 18   20   49   45   270  0    0    0.143 19   20   49   45   330  0    0    0.143 20   27   43   15   49   19   0    0.143 21   27   43   15   109  19   0    0.143 22   27   43   15   169  19   0    0.143 23   27   43   15   229  19   0    0.143 24   27   43   15   289  19   0    0.143 25   27   43   15   349  19   0    0.143 26   27   43   30   10   40   45   0.143 27   27   43   30   70   40   45   0.143 28   27   43   30   130  40   45   0.143 29   27   43   30   190  40   45   0.143 30   27   43   30   250  40   45   0.143 31   27   43   30   310  40   45   0.143 32   30   48   45   30   0    0    0.143 33   30   48   45   90   0    0    0.143 34   30   48   45   150  0    0    0.143 35   30   48   45   210  0    0    0.143 36   30   48   45   270  0    0    0.143 37   30   48   45   330  0    0    0.143 38   39   25   30   7    34   30   0.143 39   39   25   30   52   25   30   0.143 40   39   25   30   67   34   30   0.143 41   39   25   30   112  25   30   0.143 42   39   25   30   127  34   30   0.143 43   39   25   30   172  25   30   0.143 44   39   25   30   187  34   30   0.143 45   39   25   30   232  25   30   0.143 46   39   25   30   247  34   30   0.143 47   39   25   30   292  25   30   0.143 48   39   25   30   307  34   30   0.143 49   39   25   30   352  25   30   0.143 50   39   39   15   22   13   30   0.143 51   39   39   15   82   13   30   0.143 52   39   39   15   142  13   30   0.143 53   39   39   15   202  13   30   0.143 54   39   39   15   262  13   30   0.143 55   39   39   15   322  13   30   0.143 56   39   39   15   37   46   30   0.143 57   39   39   15   97   46   30   0.143 58   39   39   15   157  46   30   0.143 59   39   39   15   217  46   30   0.143 60   39   39   15   277  46   30   0.143 61   39   39   15   337  46   30   0.143 62   48   35   15   13   42   45   0.143 63   48   35   15   46   17   15   0.143 64   48   35   15   73   42   45   0.143 65   48   35   15   106  17   15   0.143 66   48   36   15   133  42   45   0.143 67   48   35   15   166  17   15   0.143 68   48   35   15   193  42   45   0.143 69   48   35   15   226  17   15   0.143 70   48   35   15   253  42   45   0.143 71   48   35   15   286  17   15   0.143 72   48   35   15   313  42   45   0.143 73   48   35   15   346  17   15   0.143 74   49   19   0    60   0    0    0.143 75   49   19   0    120  0    0    0.143 76   49   19   0    180  0    0    0.143 77   49   19   0    240  0    0    0.143 78   49   19   0    300  0    0    0.143 79   49   19   0    360  0    0    0.143 80   49   40   30   30   0    0    0.143 81   49   40   30   90   0    0    0.143 82   49   40   30   150  0    0    0.143 83   49   40   30   210  0    0    0.143 84   49   40   30   270  0    0    0.143 85   49   40   30   330  0    0    0.143 86   58   1    30   18   41   30   0.143 87   58   1    30   41   18   30   0.143 88   58   1    30   78   41   30   0.143 89   58   1    30   101  18   30   0.143 90   58   1    30   138  41   30   0.143 91   58   1    30   161  18   30   0.143 92   58   1    30   198  41   30   0.143 93   58   1    30   221  18   30   0.143 94   58   1    30   258  41   30   0.143 95   58   1    30   281  18   30   0.143 96   58   1    30   318  41   30   0.143 97   58   1    30   341  18   30   0.143 98   58   14   15   6    6    15   0.143 99   58   14   15   53   53   45   0.143100   58   14   15   66   6    15   0.143101   58   14   15   113  53   45   0.143102   58   14   15   126  6    15   0.143103   58   14   15   173  53   45   0.143104   58   14   15   186  6    15   0.143105   58   14   15   233  53   45   0.143106   58   14   15   246  6    15   0.143107   58   14   15   293  53   45   0.143108   58   14   15   306  6    15   0.143109   58   14   15   353  53   45   0.143110   60   8    15   30   0    0    0.143111   60   8    15   90   0    0    0.143112   50   8    15   150  0    0    0.143113   60   8    15   210  0    0    0.143114   60   8    15   270  0    0    0.143115   60   8    15   330  0    0    0.143116   67   3    0    11   19   15   0.143117   67   3    0    48   40   45   0.143118   67   3    0    71   19   15   0.143119   67   3    0    108  40   45   0.143120   67   3    0    131  19   15   0.143121   67   3    0    168  40   45   0.143122   67   3    0    191  19   15   0.143123   67   3    0    228  40   45   0.143124   67   3    0    251  19   15   0.143125   67   3    0    288  40   45   0.143126   67   3    0    311  19   15   0.143127   67   3    0    348  40   45   0.143128   67   15   45   0    0    0    0.143129   67   15   45   60   0    0    0.143130   67   15   45   120  0    0    0.143131   67   15   45   180  0    0    0.143132   67   15   45   240  0    0    0.143133   67   15   45   300  0    0    0.143134   67   39   30   22   36   30   0.143135   67   39   30   37   23   30   0.143136   67   39   30   82   36   30   0.143137   67   39   30   97   23   30   0.143138   67   39   30   142  36   30   0.143139   67   39   30   157  23   30   0.143140   67   39   30   202  36   30   0.143141   67   39   30   217  23   30   0.143142   67   39   30   262  36   30   0.143143   67   39   30   277  23   30   0.143144   67   39   30   322  36   30   0.143145   67   39   30   337  23   30   0.143146   74   20   30   30   0    0    0.143147   74   20   30   90   0    0    0.143148   74   20   30   150  0    0    0.143149   74   20   30   210  0    0    0.143150   74   20   30   270  0    0    0.143151   74   20   30   330  0    0    0.143152   75   54   0    5    20   45   0.143153   75   54   0    54   39   15   0.143154   75   54   0    65   20   45   0.143155   75   54   0    114  39   15   0.143156   75   54   0    125  20   45   0.143157   75   54   0    174  39   15   0.143158   75   54   0    185  20   45   0.143159   75   54   0    234  39   15   0.143160   75   54   0    245  20   45   0.143161   75   54   0    294  39   15   0.143162   75   54   0    305  20   45   0.143163   75   54   0    354  39   15   0.143164   75   57   0    16   16   30   0.143165   75   57   0    43   43   30   0.143166   75   57   0    76   16   30   0.143167   75   57   0    103  43   30   0.143168   75   57   0    136  16   30   0.143169   75   57   0    163  43   30   0.143170   75   57   0    196  16   30   0.143171   75   57   0    223  43   30   0.143172   75   57   0    256  16   30   0.143173   75   57   0    283  43   30   0.143174   75   57   0    316  16   30   0.143175   75   57   0    343  43   30   0.143176   84   17   45   0    0    0    0.143177   84   17   45   30   0    0    0.143178   84   17   45   60   0    0    0.143179   84   17   45   90   0    0    0.143180   84   17   45   120  0    0    0.143181   84   17   45   150  0    0    0.143182   84   17   45   180  0    0    0.143183   84   17   45   210  0    0    0.143184   84   17   45   240  0    0    0.143185   84   17   45   270  0    0    0.143186   84   17   45   300  0    0    0.143187   84   17   45   330  0    0    0.143188   84   19   45   10   17   30   0.143189   84   19   45   49   42   30   0.143190   84   19   45   70   17   30   0.143191   84   19   45   109  42   30   0.143192   84   19   45   130  17   30   0.143193   84   19   45   169  42   30   0.143194   84   19   45   190  17   30   0.143195   84   19   45   229  42   30   0.143196   84   19   45   250  17   30   0.143197   84   19   45   289  42   30   0.143198   84   19   45   310  17   30   0.143199   84   19   45   349  42   30   0.143200   85   1    15   20   9    30   0.143201   85   1    15   39   50   30   0.143202   85   1    15   80   9    30   0.143203   85   1    15   99   50   30   0.143204   85   1    15   140  9    30   0.143205   85   1    15   159  50   30   0.143206   85   1    15   200  9    30   0.143207   85   1    15   219  50   30   0.143208   85   1    15   260  9    30   0.143209   85   1    15   279  50   30   0.143210   85   1    15   320  9    30   0.143211   85   1    15   339  50   30   0.143__________________________________________________________________________ 
    
     Many of the attributes of the large diameter ball may be found in balls having a surface dimple coverage of less than 70%. It has been found that satisfactory performance is attained with balls having only 65% coverage. 
     FIG. 7 discloses a ball having 332 dimples arranged in a modified icosahedron on a ball having the same dimensions and properties as those discussed above. This pattern of dimples provides a 67% coverage of the ball surface. 
     The following are the coordinates of the ball of FIG. 7 indicating dimple location; all of the dimples have a diameter of 0.1550 inch and a depth of 0.112 inch: 
     
         __________________________________________________________________________DIMPLE LATITUDE       LONGITUDENUMBER Degrees      Minutes           Seconds                Degrees                     Minutes                          Seconds__________________________________________________________________________1     0    0    0    0    0    02     10   34   0    0    0    03     10   34   0    72   0    04     10   34   0    144  0    05     10   34   0    216  0    06     10   34   0    288  0    07     18   30   0    36   0    08     18   30   0    108  0    09     18   30   0    180  0    010    18   30   0    252  0    011    18   30   0    324  0    012    21   30   0    0    0    013    21   30   0    72   0    014    21   30   0    144  0    015    21   30   0    216  0    016    21   30   0    288  0    017    28   42   0    24   0    018    28   42   0    48   0    019    28   42   0    96   0    020    28   42   0    120  0    021    28   42   0    168  0    022    28   42   0    192  0    023    28   42   0    240  0    024    28   42   0    264  0    025    28   42   0    312  0    026    28   42   0    336  0    027    32   27   0    0    0    028    32   27   0    72   0    029    32   27   0    144  0    030    32   27   0    216  0    031    32   27   0    288  0    032    38   59   0    36   0    033    38   59   0    108  0    034    38   59   0    180  0    035    38   59   0    252  0    036    38   59   0    324  0    037    40   7    0    18   0    038    40   7    0    54   0    039    40   7    0    90   0    040    40   7    0    126  0    041    40   7    0    162  0    042    40   7    0    198  0    043    40   7    0    234  0    044    40   7    0    270  0    045    40   7    0    306  0    046    40   7    0    342  0    047    43   44   0    0    0    048    43   44   0    72   0    049    43   44   0    144  0    050    43   44   0    216  0    051    43   44   0    288  0    052    50   35   0    28   48   053    50   35   0    43   12   054    50   35   0    100  48   055    50   35   0    115  12   056    50   35   0    172  48   057    50   35   0    187  12   058    50   35   0    244  48   059    50   35   0    259  12   060    50   35   0    316  48   061    50   35   0    331  12   062    52   7    0    14   24   063    52   7    0    57   36   064    52   7    0    86   24   065    52   7    0    129  36   066    52   7    0    158  24   067    52   7    0    201  36   068    52   7    0    230  24   069    52   7    0    273  36   070    52   7    0    302  24   071    52   7    0    345  36   072    54   57   0    0    0    073    54   57   0    72   0    074    54   57   0    144  0    075    54   57   0    216  0    076    54   57   0    288  0    077    62   8    0    36   0    078    62   8    0    108  0    079    62   8    0    180  0    080    62   8    0    252  0    081    62   8    0    324  0    082    62   34   0    24   0    083    62   34   0    48   0    084    62   34   0    96   0    085    62   34   0    120  0    086    62   34   0    168  0    087    62   34   0    192  0    088    62   34   0    240  0    089    62   34   0    264  0    090    62   34   0    312  0    091    62   34   0    336  0    092    64   1    0    12   0    093    64   1    0    60   0    094    64   1    0    84   0    095    64   1    0    132  0    096    64   1    0    156  0    097    64   1    0    204  0    098    64   1    0    228  0    099    64   1    0    276  0    0100   64   1    0    300  0    0101   64   1    0    348  0    0102   66   13   0    0    0    0103   66   13   0    72   0    0104   66   13   0    144  0    0105   66   13   0    216  0    0106   66   13   0    288  0    0107   73   35   0    30   0    0108   73   35   0    42   0    0109   73   35   0    102  0    0110   73   35   0    114  0    0111   73   35   0    174  0    0112   73   35   0    186  0    0113   73   35   0    246  0    0114   73   35   0    258  0    0115   73   35   0    318  0    0116   73   35   0    330  0    0117   74   7    0    18   0    0118   74   7    0    54   0    0119   74   7    0    90   0    0120   74   7    0    126  0    0121   74   7    0    162  0    0122   74   7    0    198  0    0123   74   7    0    234  0    0124   74   7    0    270  0    0125   74   7    0    306  0    0126   74   7    0    342  0    0127   75   7    0    6    0    0128   75   7    0    66   0    0129   75   7    0    78   0    0130   75   7    0    138  0    0131   75   7    0    150  0    0132   75   7    0    210  0    0133   75   7    0    222  0    0134   75   7    0    282  0    0135   75   7    0    294  0    0136   75   7    0    354  0    0137   84   16   0    0    0    0138   84   16   0    12   0    0139   84   16   0    24   0    0140   84   16   0    36   0    0141   84   16   0    48   0    0142   84   16   0    60   0    0143   84   16   0    72   0    0144   84   16   0    84   0    0145   84   16   0    96   0    0146   84   16   0    108  0    0147   84   16   0    120  0    0148   84   16   0    132  0    0149   84   16   0    144  0    0150   84   16   0    156  0    0151   84   16   0    168  0    0152   84   16   0    180  0    0153   84   16   0    192  0    0154   84   16   0    204  0    0155   84   16   0    216  0    0156   84   16   0    228  0    0157   84   16   0    240  0    0158   84   16   0    252  0    0159   84   16   0    264  0    0160   84   16   0    276  0    0161   84   16   0    288  0    0162   84   16   0    300  0    0163   84   16   0    312  0    0164   84   16   0    324  0    0165   84   16   0    336  0    0166   84   16   0    348  0    0__________________________________________________________________________ 
    
     The ball of FIG. 7 was tested with a U.S.G.A. driver at a cub head speed of 160 feet per second. This test provided the following results: 
     
         ______________________________________Trajectory      15.30Flight Time     6.50Carry           255.40Deviation       3.42Roll            28.90Total Distance  284.30______________________________________ 
    
     A ball having the same number of dimples and the same basic pattern, but with the dimples covering only 64% of the surface of the ball, was tested under the same conditions and at the same club head speed. This test provided the following results: 
     
         ______________________________________Trajectory      15.40Flight Time     6.50Carry           254.90Deviation       -0.42Roll            26.40Total Distance  281.20______________________________________ 
    
     In view of the test results, the preferred minimum dimple coverage of the surface of the ball is about 65%. 
     In addition to the advantages discussed above, there is easier access to the ball with the club in both the fairway and rough because of the ball&#39;s size. This easier access allows for cleaner hits. Further, the increased size and moment results in the ball&#39;s ability to hold the line during putting. Thus, by increasing the percentage of dimple coverage of the surface of the ball, the ball has the advantages attributable to the larger ball while having enhanced flight characteristics as compared to previous balls having enlarged diameters. 
     The above description and drawings are illustrative only since obvious modifications could be made without departing from the invention, the scope of which is to be limited only by the following claims.