Golf ball dimple profile
View Patent ↗Golf ball dimples having a cross-sectional profile shape defined by a semi-cubical parabola function are disclosed.
1. A golf ball having a plurality of recessed dimples on the surface thereof, wherein at least a portion of the recessed dimples have a cross-sectional profile defined by a curve based on a semi-cubical parabola function in the form of:
y
(
x
)
=
a
(
x
2
3
-
(
d
2
)
2
3
)
wherein a is the depth factor, d is the dimple diameter, and wherein
-
d
2
≤
x
≤
d
2
.
2. The golf ball of claim 1 , wherein the depth factor, a, is from 0.005 to 0.075.
3. The golf ball of claim 1 , wherein the dimple has a chord volume (V c ) defined by the equation:
V
c
=
π
a
(
d
2
)
8
3
4
wherein a is the depth factor, and d is the dimple diameter.
4. The golf ball of claim 3 , wherein the chord volume, V c , relates to the dimple diameter, d, such that:
.0010
≤
V
c
d
2
≤
.0040
.
5. The golf ball of claim 3 , wherein the chord volume V c , relates to the dimple diameter, d, such that:
.0015
≤
V
c
d
2
≤
.0030
.
6. The golf ball of claim 1 , wherein 30% or greater of the plurality of recessed dimples have a cross-sectional profile defined by a curve based on a semi-cubical parabola.