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US 2025/0360362 A1Published application
Golf ball
AssigneeAcushnet Company
InventorsCourtney N. Engle, John S. Dytko, Michael R. Madson, Douglas E. Jones
Life of this patent
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Abstract
A golf ball is disclosed herein that has at least one modified aerodynamic characteristic or performance trait. More specifically, the golf ball disclosed herein can include a dimple pattern having a specific drag coefficient and/or specific integrated drag area.
Claims31
A golf ball comprising at least a core, a casing layer, and a cover formed from urethane,
- the golf ball having a weight of 1.600 ounces-1.620 ounces, a diameter of 1.680 inches-1.700 inches, a compression of at least 90, a coefficient of restitution of at least 0.805, and an initial velocity of at least 250 feet/second;
- the core having a weight of at least 1.245 ounces, a diameter of at least 1.525 inches, and a coefficient of restitution of at least 0.785;
- the cover comprising a plurality of dimples arranged in a dimple pattern having a drag coefficient (CD) and a lift coefficient (CL), such that 0.235≤CD≤0.245 at a Reynolds number of 220,000 and a spin ratio of 0.070, 0.235≤CD≤0.245 at a Reynolds number of 160,000 and a spin ratio of 0.095, and 0.235≤CD≤0.245 at a Reynolds number of 120,000 and a spin ratio of 0.100;
- wherein the dimple pattern has an integrated drag area (DA) defined by:
- DA
- =
- ∫
- 1
-
- 6
-
- 0
- ,
- 0
-
- 0
-
- 0
- 225
- ,
- 000
- C
- D
- (
- Re
- )
-
- d
-
- Re
- where CD(Re) is established at a launch condition of a golf ball speed of 182.0 mph, a launch angle of 10.0 degrees, and a spin rate of 2,700 rpm, such that 14,500≤DA≤15,150;
- wherein CL≥0.130 at a Reynolds number of 240,000 and a spin ratio of 0.060;
- and
- wherein the drag coefficient and the lift coefficient at a Reynolds number of 225,000 and a spin ratio of 0.070 have the following relationship:
- 1.625≤CD/CL≤1.700.
32 more elements
A three layer golf ball comprising a core, a casing layer, and a cover formed from urethane,
- the golf ball having a weight of 1.600 ounces-1.620 ounces, a diameter of 1.680 inches-1.700 inches, a compression of at least 92, a coefficient of restitution of at least 0.805, and an initial velocity of at least 250 feet/second;
- the core having a weight of at least 1.245 ounces, a diameter of at least 1.525 inches, and a coefficient of restitution of at least 0.790, and the casing having a thickness of 0.045 inches-0.055 inches;
- the cover having a thickness of 0.020 inches-0.030 inches and comprising a plurality of dimples arranged in a dimple pattern having a drag coefficient (CD) and a lift coefficient (CL), such that 0.235≤CD≤0.245 at a Reynolds number of 220,000 and a spin ratio of 0.070, 0.235≤CD≤0.245 at a Reynolds number of 160,000 and a spin ratio of 0.095, and 0.235≤CD≤0.245 at a Reynolds number of 120,000 and a spin ratio of 0.100;
- wherein the dimple pattern has an integrated drag area (DA) defined by:
- DA
- =
- ∫
- 1
-
- 6
-
- 0
- ,
- 0
-
- 0
-
- 0
- 225
- ,
- 000
- C
- D
- (
- Re
- )
-
- d
-
- Re
- where CD(Re) is established at a launch condition of a golf ball speed of 182.0 mph, a launch angle of 10.0 degrees, and a spin rate of 2,700 rpm, such that 14,500≤DA≤15,150;
- wherein CL≥0.130 at a Reynolds number of 240,000 and a spin ratio of 0.060;
- and
- wherein the drag coefficient and the lift coefficient at a Reynolds number of 225,000 and a spin ratio of 0.070 have the following relationship:
- 1.625≤CD/CL≤1.700.
32 more elements
A four layer golf ball comprising a dual layer core, a casing layer, and a cover formed from urethane,
- the golf ball having a weight of 1.600 ounces-1.620 ounces, a diameter of 1.680 inches-1.700 inches, a compression of at least 100, a coefficient of restitution of at least 0.807, and an initial velocity of at least 250 feet/second;
- the core having a weight of at least 1.290 ounces, a diameter of at least 1.545 inches, and a coefficient of restitution of at least 0.790, and the casing having a thickness of 0.030 inches-0.040 inches;
- the cover having a thickness of 0.025 inches-0.035 inches and comprising a plurality of dimples arranged in a dimple pattern having a drag coefficient (CD) and a lift coefficient (CL), such that 0.235≤CD≤0.245 at a Reynolds number of 220,000 and a spin ratio of 0.070, 0.235≤CD≤0.245 at a Reynolds number of 160,000 and a spin ratio of 0.095, and 0.235≤CD≤0.245 at a Reynolds number of 120,000 and a spin ratio of 0.100;
- wherein the dimple pattern has an integrated drag area (DA) defined by:
- DA
- =
- ∫
- 1
-
- 6
-
- 0
- ,
- 0
-
- 0
-
- 0
- 2
-
- 25
- ,
- 000
- C
- D
- (
- Re
- )
-
- d
-
- Re
- where CD(Re) is established at a launch condition of a golf ball speed of 182.0 mph, a launch angle of 10.0 degrees, and a spin rate of 2,700 rpm, such that 14,500≤DA≤15,150;
- wherein CL≥0.130 at a Reynolds number of 240,000 and a spin ratio of 0.060;
- and
- wherein the drag coefficient and the lift coefficient at a Reynolds number of 225,000 and a spin ratio of 0.070 have the following relationship:
- 1.625≤CD/CL≤1.700.
34 more elements
Dependencies are inferred from the claim text.