Golf ball dimples defined by superposed curve with decaying feature
AssigneeAcushnet Company
InventorsCourtney N. Engle, Michael R. Madson, Nicholas M. Nardacci
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Abstract
A golf ball having a plurality of dimples on a surface thereof is disclosed herein. At least a first group of the plurality of dimples has a cross-sectional dimple profile defined by a superposed function resulting from a sum of at least a first function and a second function. The first function can be defined by at least one of: a circular arc or a catenary curve, and the second function can be defined by a decaying sinusoidal function.
Claims20
A golf ball having a plurality of dimples on a surface thereof, wherein at least a first group of the plurality of dimples has a cross-sectional dimple profile defined by a superposed function resulting from a sum of at least a first function and a second function,
- wherein the first function is defined by at least one of:
- a circular arc or a catenary curve, and
- the second function is a decaying sinusoidal function.
A golf ball having a plurality of dimples on a surface thereof, wherein at least a first group of the plurality of dimples has a cross-sectional dimple profile defined by a sum of at least a first function and a second function,
- wherein the first function is defined by a circular arc or a catenary curve;
- and
- the second function is defined by one of the following:
- y
-
- (
- x
- )
- =
- α
-
- c
- d
-
- e
- -
- k
-
- x
-
- cos
-
- (
- bx
- )
- ;
- or
- (
- i
- )
- y
-
- (
- x
- )
- =
- -
- α
-
- c
- d
-
- e
- -
- k
-
- x
-
- cos
-
- (
- bx
- )
- ,
- (
- ii
- )
- where α is an amplitude factor, and 0.01≤α≤1,
- cd is a chord depth (in inches) of the first function,
- k is a decay constant,
- b is an oscillation frequency constant, and
- x is a radial distance (in inches) from a centroid of the cross-sectional dimple profile;
- and
- wherein x=0 corresponds to the centroid of the cross-sectional dimple profile, and a three-dimensional dimple geometry is generated via rotation about x=0.
Dependencies are inferred from the claim text.