Three piece golf ball with a spherical metal center
AssigneeSpalding Sports Worldwide, Inc.
InventorsR. Dennis Nesbitt, Mark L. Binette
Life of this patent
Estimating the term…
Abstract
A golf ball utilizing a high density core component, which is preferably part of a multicomponent core assembly is disclosed. The high density core component is preferably in the form of a metal sphere. The golf balls exhibit a unique combination of a relatively high coefficient of restitution, a controlled moment of inertia, and a relatively high spin rate during short distance shots. It is preferred that the high density core component be utilized in conjunction with a multi-layer cover assembly.
Claims18
A non-wound golf ball comprising:
- a spherical metal core component having a specific gravity of from about 1.5 to about 19.4;
- a core layer disposed about said spherical metal core component, said core layer having a specific gravity less than 1.2, said spherical metal core component and said core layer forming a core assembly, said core assembly having a coefficient of restitution of at least 0.730;
- and
- a cover layer assembly disposed about said core layer, said cover layer comprising an ionomeric material and defining a plurality of dimples along an outer surface of said cover layer.
A non-wound golf ball comprising:
- a spherical metal core component;
- and
- a core layer concentrically disposed about and immediately adjacent to said spherical metal core component, said core layer comprising polybutadiene, thereby forming a dual core assembly;
- wherein said dual core assembly exhibits a coefficient of restitution of at least about 0.780;
- and
- a cover layer disposed about said core layer, said cover layer comprising an ionomer resin and defining a plurality of dimples.
A non-wound golf ball having a dimpled outer surface and exhibiting improved playability properties, said golf ball comprising:
- a spherical metal core component having a specific gravity of at least about 1.5;
- a core layer disposed about said spherical metal core component and having a specific gravity of less than the specific gravity of said spherical metal core component;
- and
- a multi-layer cover assembly disposed about said core layer and including (i) an inner cover layer disposed proximate said core layer, and (ii) an outer cover layer disposed immediately adjacent to said cover layer and defining an outer dimpled surface, wherein at least one of said inner cover layer and said outer cover layer comprises an ionomeric polymer, wherein said spherical metal core component and said core layer constitute a dual core assembly, said dual core assembly exhibiting a coefficient of restitution of at least 0.780.
Dependencies are inferred from the claim text.