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US 10,300,340 B2Granted
Golf balls having volumetric equivalence on opposing hemispheres and symmetric flight performance and methods of making same
AssigneeAcushnet Company
InventorsMichael R. Madson, Nicholas M. Nardacci
Life of this patent
Estimating the term…
Abstract
Golf balls according to the present invention achieve flight symmetry and overall satisfactory flight performance due to a dimple surface volume ratio that is equivalent between opposing hemispheres despite the use of different dimple geometries, different dimple arrangements, and/or different dimple counts on the opposing hemispheres.
Claims11
A golf ball having a spherical outer surface, comprising:
- a first hemisphere comprising a first plurality of dimples arranged in a first dimple pattern;
- and
- a second hemisphere comprising a second plurality of dimples arranged in a second dimple pattern, wherein
- the first dimple pattern is rotational symmetric about a polar axis;
- the second dimple pattern is rotational symmetric about the polar axis;
- the first dimple pattern has a first number of degrees of symmetry about the polar axis;
- the second dimple pattern has a second number of degrees of symmetry about the polar axis;
- the first number of degrees of symmetry is different from the second number of degrees of symmetry;
- the first plurality of dimples and the second plurality of dimples have substantially equivalent surface volumes;
- and
- the outer surface of the golf ball does not contain a great circle which is free of dimples.
8 more elements
A golf ball having a spherical outer surface, comprising:
- a first hemisphere comprising a first number of dimples having a first average dimple surface volume;
- a second hemisphere comprising a second number of dimples having a second average dimple surface volume;
- wherein
- the first number of dimples differs from the second number of dimples by at least two;
- the absolute difference between the first average dimple surface volume and the second average dimple surface volume is less than 3.5×10−6 in3;
- and
- the outer surface of the golf ball does not contain a great circle which is free of dimples.
4 more elements
Dependencies are inferred from the claim text.