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US 8,894,510 B2Granted
Golf ball dimple profile
AssigneeAcushnet Company
InventorChris Hixenbaugh
Life of this patent
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Abstract
Golf ball dimples having a cross-sectional profile shape defined by the envelope of the response of an under damped harmonic oscillator are disclosed.
Claims2
A method for defining a golf ball dimple surface, the method comprising:
- providing a response of an under damped harmonic oscillator, wherein the response has an envelope of oscillation, OE, described by
- OE
-
- (
- t
- )
- =
- ±
- X
-
-
- ⅇ
- -
- ζω
- n
-
- t
- ,
-
- where
- ζ
- =
- c
- 4
-
- mk
- ,
-
- ω
- n
- =
- k
- m
- ,
-
- X
- =
- [
- (
- x
- 0
-
- ω
- d
- )
- 2
- +
- (
- v
- 0
- +
- ζω
- n
-
- x
- 0
- )
- 2
- ]
- 1
- /
- 2
- ω
- d
- ,
-
- ω
- d
- =
- ω
- n
-
- 1
- -
- ζ
- 2
- ,
- and where t is observation time, v is velocity, m is mass, k is the spring constant, c is the viscous damping coefficient;
- defining a golf ball dimple profile based on the envelope of oscillation where the observation time is equal to one half of the dimple diameter;
- and
- rotating the dimple profile 360° about a vertical axis to define the dimple surface.
78 more elements
Dependencies are inferred from the claim text.