Golf ball having non-concentric parting line
AssigneeAcushnet Company
InventorsMichael R. Madson, Nicholas M Nardacci, David P Hunt
Life of this patent
Estimating the term…
Abstract
The present invention is directed to a golf ball comprising of non-concentric arcs defining a non-planar parting line on its spherical surface resulting in having a large size disparity between dimples in one hemisphere and adjacent dimples from the opposing hemisphere. The parting line is produced by a pair of adjacent dimples, wherein D indicates dimples and N indicates dimples from the Northern hemisphere and those from the Southern hemisphere are indicated by S. A large disparity may be created, if the following condition is satisfied: D ( N ) D ( S ) > 1.25 or D ( N ) D ( S ) < 0.80 .
Claims16
A golf ball having a non-planar parting line about dimples on its spherical surface, the parting line comprising:
- non-concentric arcs having straight connecting line segments between the arcs, wherein each arc maintains a tangency with its connecting lines and a relief distance greater than 0.002 inches when measured from a dimple edge to one of the non-concentric arcs;
- and
- a radius of each non-concentric arc relates to a corresponding dimple perimeter diameter according to the equations:
- r
- A
- <
- D
- 2
-
-
- and
-
-
- r
- A
- >
- (
- 0.10
- )
-
- D
- 2
- wherein rA is the radius of a non-concentric arc, and
- D is the dimple perimeter diameter.
Dependencies are inferred from the claim text.