GOLF BALL
Golf balls disclosed herein have a combination of aerodynamic properties and construction parameters providing a desired set of performance characteristics.
1 . A golf ball comprising at least a core and a cover,
the cover comprising a plurality of dimples arranged in a dimple pattern having a drag coefficient (C D ) and a lift coefficient (C L ), such that:
0.225≤C D ≤0.235 at a Reynolds number of 220,000 and a spin ratio of 0.070,
0.225≤C D ≤0.235 at a Reynolds number of 160,000 and a spin ratio of 0.095, and
0.225≤C D ≤0.235 at a Reynolds number of 120,000 and a spin ratio of 0.100;
the golf ball having a weight of 1.600 ounces-1.620 ounces, and a diameter of 1.680 inches-1.700 inches, the core having a weight of at least 1.245 ounces and a diameter of at least 1.525 inches;
wherein:
(i) the golf ball has a compression that is less than 60, and the golf ball has a coefficient of restitution (COR) of 0.785-0.815;
(ii) the golf ball has a compression of at least 60 and less than 80, and the golf ball has a COR of 0.770-0.815;
(iii) the golf ball has a compression of at least 80 and less than 100, and the golf ball has a COR of 0.740-0.810; or
(iv) the golf ball has a compression of at least 100, and the golf ball has a COR of 0.710-0.780.
2 . The golf ball according to claim 1 , wherein the golf ball compression is less than 60, and the golf ball COR is 0.785-0.815.
3 . The golf ball according to claim 1 , wherein the golf ball compression is at least 60 and less than 80, and the golf ball COR is 0.770-0.815.
4 . The golf ball according to claim 1 , wherein the golf ball compression is at least 80 and less than 100, and the golf ball COR is 0.740-0.810.
5 . The golf ball according to claim 1 , wherein the golf ball compression is at least 100, and the golf ball COR is 0.710-0.780.
6 . The golf ball according to claim 1 , wherein the golf ball has a coefficient of restitution that is no greater than 0.800.
7 . The golf ball according to claim 1 , wherein the golf ball has a coefficient of restitution that is no greater than 0.780.
8 . The golf ball according to claim 1 , wherein the core has a coefficient of restitution that is no greater than 0.770.
9 . The golf ball according to claim 1 , wherein the core has a coefficient of restitution that is no greater than 0.750.
10 . The golf ball according to claim 1 , wherein the drag coefficient (C D ) and the lift coefficient (C L ) at a Reynolds number of 225,000, and spin ratio of 0.070 have the following relationship: 1.375≤C D /C L <1.575.
11 . The golf ball according to claim 1 , wherein the drag coefficient (C D ) and the lift coefficient (C L ) at a Reynolds number of 225,000, and spin ratio of 0.070 have the following relationship: 1.575≤C D /C L <1.775.
12 . The golf ball according to claim 1 , wherein the drag coefficient (C D ) and the lift coefficient (C L ) at a Reynolds number of 225,000, and spin ratio of 0.070 have the following relationship: 1.775≤C D /C L ≤1.975.
13 . The golf ball according to claim 1 , wherein the golf ball is a two-layer golf ball.
14 . The golf ball according to claim 1 , wherein the golf ball is a three-layer golf ball.
15 . The golf ball according to claim 1 , wherein the golf ball is a four-layer golf ball.
16 . The golf ball according to claim 1 , wherein the core has a weight of at least 1.260 ounces and a diameter of at least 1.530 inches.
17 . The golf ball according to claim 1 , wherein the core has a weight of at least 1.300 ounces and a diameter of at least 1.545 inches.
18 . The golf ball according to claim 1 , wherein the golf ball has an initial velocity of no greater than 252 feet/second.
19 . The golf ball according to claim 1 , wherein:
0.230≤C D ≤0.235 at a Reynolds number of 220,000 and a spin ratio of 0.070;
0.230≤C D ≤0.235 at a Reynolds number of 160,000 and a spin ratio of 0.095; and
0.230≤C D ≤0.235 at a Reynolds number of 120,000 and a spin ratio of 0.100.
20 . The golf ball according to claim 1 , wherein:
0.225≤C D ≤0.230 at a Reynolds number of 220,000 and a spin ratio of 0.070;
0.225≤C D ≤0.230 at a Reynolds number of 160,000 and a spin ratio of 0.095; and
0.225≤C D ≤0.230 at a Reynolds number of 120,000 and a spin ratio of 0.100.
21 . The golf ball according to claim 1 , wherein the golf ball has a coefficient of restitution (COR ball ) and an initial velocity (IV ball ) (feet/second), such that a Speed Factor(S) is defined by the following equation:
S
=
902.67
+
814.63
(
COR
ball
)
-
5.44
IV
ball
,
wherein 177≤S≤181.
22 . A golf ball comprising at least a core and a cover,
the cover comprising a plurality of dimples arranged in a dimple pattern having a drag coefficient (C D ) and a lift coefficient (C L ), such that:
0.225≤C D ≤0.235 at a Reynolds number of 220,000 and a spin ratio of 0.070,
0.225≤C D ≤0.235 at a Reynolds number of 160,000 and a spin ratio of 0.095, and
0.225≤C D ≤0.235 at a Reynolds number of 120,000 and a spin ratio of 0.100;
the golf ball having a weight of 1.600 ounces-1.620 ounces, and a diameter of 1.680 inches-1.700 inches, the core having a weight of at least 1.245 ounces and a diameter of at least 1.525 inches;
wherein the golf ball has a compression (C 0 ) that is greater than 40, and the golf ball has a coefficient of restitution (COR), such that:
-
9.71
×
10
-
6
C
0
2
+
5.46
×
10
-
4
C
0
+
0.765
≤
COR
;
and
(
i
)
COR
≤
-
8.14
×
10
-
6
C
0
2
+
7.24
×
10
-
4
C
0
+
0.809
.
(
ii
)