US 2002/0177492 A1 · Solid multi-piece golf ball

Abstract

A solid multi-piece golf ball includes a solid elastic core, an intermediate layer of a thermoplastic material and a cover. The core undergoes a deformation of 3.2-6.5 mm when subjected to a load of 1274 N from an initial load of 98 N. The cover has a Shore D hardness of 45-55 and the intermediate layer has a Shore D hardness of 54-65 and higher than that of the cover. The cover and the intermediate layer have a combined thickness of 2.3-3.5 mm and a ratio of cover thickness to intermediate layer thickness between 0.48 and 0.84. This combination of features provides the ball with qualities desired by professional golfers and skilled amateurs, including carry, spin performance, cracking resistance, topping durability, scuffing resistance, and feel.

Claims5

Dependent claims

A solid multi-piece golf ball comprising a solid elastic core, a cover composed of at least one layer enclosing the core, and an intermediate layer composed of a thermoplastic material between the core and the cover;

wherein
the core, when subjected to a load of 1274 N (130 kgf) from an initial load of 98 N (10 kgf), undergoes a deformation of 3.2 to 6.5 mm;
the cover has a Shore D hardness of 45 to 55 and the intermediate layer has a Shore D hardness in a range of 54 to 65 and higher than the Shore D hardness of the cover;
the cover and the intermediate layer have a combined thickness, defined as (cover thickness +intermediate layer thickness), of 2.3 to 3.5 mm;
and
the cover and the intermediate layer have a thickness ratio, defined as (cover thickness)/(intermediate layer thickness), of 0.48 to 0.84.

3 more elements

Dependencies are inferred from the claim text.

Solid multi-piece golf ball

Life of this patent

Solid multi-piece golf ball

Life of this patent

Abstract

Claims5