US 6,293,877 B1 · Golf ball

Abstract

The present invention is directed towards a golf ball which comprises a core; at least one cover layer; at least one mantle layer disposed between the core and the cover; and at least one transition layer disposed between two of the other layers of the golf ball comprised of discrete portions of at least one of the adjacent layers. The transition layer may be formed by projections extending from one layer and cavities on the opposing layer for interlocking with the projections. The thickness of a first layer is X and the thickness of a second layer is Y and the thickness of the transition layer is Z. The Flexural Modulus of the first layer is Ex and the second layer is Ey. In the golf ball according to the present invention, Z is determined by the following formula: X + Y 4 ≤ Z ≤ 1.5 ⁢ ( X + Y ) ⁢ ⁢ and E x E y ≤ 0.9 ⁢ ⁢ OR ⁢ ⁢ E x E y ≥ 1.1 .

Claims14

Dependent claims

A golf ball comprising:

a core;
at least one first layer, the first layer being formed of a first material having a flexural modules Ey and having a thickness Y;
at least one second layer disposed between the core and the first layer being formed of a second material having a flexural modules Ex and having a thickness X;
and
at least one transition layer disposed between the first and second layers formed of interlocking discrete portions of the first and second materials;
wherein the transition layer has a thickness Z determined by the following formula:
X + Y 4 ≤ Z ≤ 1.5 ⁢ ( X + Y ) ⁢ ⁢ and E x E y ≤ 0.9 ⁢ ⁢ OR ⁢ ⁢ E x E y ≥ 1.1 .

4 more elements

Dependencies are inferred from the claim text.

Golf ball

Life of this patent

Golf ball

Life of this patent

Abstract

Claims14