Golf ball dimple profile defined by modified cycloid curve
AssigneeAcushnet Company
InventorCourtney N. Engle
Life of this patent
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Abstract
Various aspects of a dimple pattern for a golf ball are disclosed herein. In one aspect, the golf balls disclosed herein can include dimples having a profile that is defined by a modified cycloid curve.
Claims14
A golf ball having a plurality of dimples on a surface thereof, wherein at least a subset of the plurality of dimples has a cross-sectional dimple profile defined by x-y coordinates, wherein x=0 corresponds to a central axis of the cross-sectional dimple profile, y=−cd corresponds to a maximum depth of the cross-sectional dimple profile which is defined at the central axis, and the cross-sectional dimple profile is symmetrical about the central axis,
- wherein a cross-sectional dimple profile is defined by a modified cycloid curve, and the modified cycloid curve is rotated about the central axis to define the cross-sectional dimple profile of the plurality of dimples,
- wherein the modified cycloid curve is defined by:
- {
- x
- =
- D
- 2
-
- π
-
- (
- θ
- -
- sin
-
- θ
- )
- -
- D
- 2
- y
- =
- c
- d
- 2
-
- (
- cos
-
- θ
- -
- 1
- )
- ,
- with
-
- 0
- ≤
- θ
- <
- 2
-
- π
- where D is a dimple diameter, cd is a chord depth, and θ is an angular displacement along the modified cycloid curve.
A golf ball having a plurality of dimples on a surface thereof, wherein at least a subset of the plurality of dimples has a cross-sectional dimple profile defined by x-y coordinates,
- wherein x=0 corresponds to a central axis of the cross-sectional dimple profile, y=−cd corresponds to a maximum depth of the cross-sectional dimple profile which is defined at the central axis, and the cross-sectional dimple profile is symmetrical about the central axis,
- wherein a cross-sectional dimple profile is defined by a modified cycloid curve, and the modified cycloid curve is rotated about the central axis to define the cross-sectional dimple profile of the plurality of dimples,
- wherein x-coordinates of the modified cycloid curve are only dependent on a dimple diameter and an angular displacement along the modified cycloid curve, and
- y-coordinates of the modified cycloid curve are only dependent on a chord depth and an angular displacement along the modified cycloid curve.
Dependencies are inferred from the claim text.