Multi-layer golf ball
First Claim
Patent Images
1. A golf ball consisting essentially of:
- an inner core layer formed from a thermoset rubber composition and having a center hardness (Hcenter) of 60 Shore C or greater, and an outer surface hardness (Hcenter surface) of 80 Shore C or greater;
an intermediate core layer formed from a thermoplastic composition having a material hardness (Hintermediate core material) of 83 Shore C or greater;
an outer core layer formed from a highly neutralized polymer composition having a material hardness (Houter core material) of 35 Shore D or greater;
an inner cover layer formed from a thermoplastic composition having a material hardness (Hinner cover material) of 95 Shore C or less; and
an outer cover layer formed from a composition selected from the group consisting of ionomeric and non-ionomeric E/X- and E/X/Y-type acid copolymers of ethylene (E), a C3-C8 α
,β
-ethylenically unsaturated carboxylic acid (X), and an optional softening monomer (Y); and
blends of two or more thereof;
wherein a core structure consisting of the inner core layer, the intermediate core layer, and the outer core layer has a diameter of from 1.40 inches to 1.55 inches.
4 Assignments
0 Petitions
Accused Products
Abstract
Multi-piece golf balls having a multi-layered solid core and multi-layered cover are provided.
32 Citations
6 Claims
-
1. A golf ball consisting essentially of:
-
an inner core layer formed from a thermoset rubber composition and having a center hardness (Hcenter) of 60 Shore C or greater, and an outer surface hardness (Hcenter surface) of 80 Shore C or greater; an intermediate core layer formed from a thermoplastic composition having a material hardness (Hintermediate core material) of 83 Shore C or greater; an outer core layer formed from a highly neutralized polymer composition having a material hardness (Houter core material) of 35 Shore D or greater; an inner cover layer formed from a thermoplastic composition having a material hardness (Hinner cover material) of 95 Shore C or less; and an outer cover layer formed from a composition selected from the group consisting of ionomeric and non-ionomeric E/X- and E/X/Y-type acid copolymers of ethylene (E), a C3-C8 α
,β
-ethylenically unsaturated carboxylic acid (X), and an optional softening monomer (Y); and
blends of two or more thereof;wherein a core structure consisting of the inner core layer, the intermediate core layer, and the outer core layer has a diameter of from 1.40 inches to 1.55 inches. - View Dependent Claims (2, 3)
-
-
4. A golf ball consisting essentially of:
-
an inner core layer formed from a thermoset rubber composition and having a center hardness (Hcenter) of from 50 Shore C to 75 Shore C, and an outer surface hardness (Hcenter surface) of from 60 Shore C to 85 Shore C; an intermediate core layer formed from a thermoplastic composition having a material hardness (Hintermediate core material) of 83 Shore C or greater; an outer core layer formed from a highly neutralized polymer composition and having an outer surface hardness (Houter core surface) of from 70 Shore C to 95 Shore C; an inner cover layer formed from a thermoplastic composition having a material hardness (Hinner cover material) of from 80 Shore C to 95 Shore C; and an outer cover layer formed from a composition selected from the group consisting of ionomeric and non-ionomeric E/X- and E/X/Y-type acid copolymers of ethylene (E), a C3-C8 α
,β
-ethylenically unsaturated carboxylic acid (X), and an optional softening monomer (Y); and
blends of two or more thereof. - View Dependent Claims (5, 6)
-
Specification