Method of forming a multilayer golf ball with a thin thermoset outer layer
First Claim
Patent Images
1. A method of forming a golf ball comprising the steps of(a) forming a golf ball core;
- (b) forming an inner cover layer around said golf ball core with a material having a first shore D hardness, wherein forming the inner cover layer comprises molding the inner cover material; and
(c) casting an outer cover layer of less than about 0.05 inches around said inner cover layer and golf ball core with a thermoset material having a second shore D hardness less than the first, wherein casting the outer cover layer comprises;
(i) placing the golf ball core in core holder;
(ii) gelling the thermoset material to a viscosity of between 2,000 cps to 30,000 cps in the first mold half;
(iii) placing the golf ball core in to the gelling thermoset material in the first mold half;
(iv) disengaging the golf ball core from the core holder after a selected period of time;
(v) placing the golf ball core, while still in said first mold half with the thermoset material against a second mold half having additional thermoset material and mating the two mold halves together; and
(vi) curing the thermoset material in the mated mold halves.
5 Assignments
0 Petitions
Accused Products
Abstract
The present invention is directed towards a method of forming a multilayer golf ball which comprises a core, an inner cover layer and an outer cover layer. The steps include forming a golf ball core; forming an inner cover layer around golf ball core with a material having a first shore D hardness; and casting an outer cover layer around inner cover layer and golf ball core with a thermoset material having a second shore D hardness less than the first. The inner cover layer is formed of a material having a shore D hardness that is about 5 to about 50 greater than the shore D hardness of the thermoset material forming the outer cover layer.
163 Citations
19 Claims
-
1. A method of forming a golf ball comprising the steps of
(a) forming a golf ball core; -
(b) forming an inner cover layer around said golf ball core with a material having a first shore D hardness, wherein forming the inner cover layer comprises molding the inner cover material; and (c) casting an outer cover layer of less than about 0.05 inches around said inner cover layer and golf ball core with a thermoset material having a second shore D hardness less than the first, wherein casting the outer cover layer comprises; (i) placing the golf ball core in core holder; (ii) gelling the thermoset material to a viscosity of between 2,000 cps to 30,000 cps in the first mold half; (iii) placing the golf ball core in to the gelling thermoset material in the first mold half; (iv) disengaging the golf ball core from the core holder after a selected period of time; (v) placing the golf ball core, while still in said first mold half with the thermoset material against a second mold half having additional thermoset material and mating the two mold halves together; and (vi) curing the thermoset material in the mated mold halves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method of forming a golf ball comprising the steps of
(a) forming a golf ball core; -
(b) forming an inner cover layer around said golf ball core with a material having a first shore D hardness, wherein forming the inner cover layer comprises molding the inner cover material; and (c) casting an outer cover layer of less than about 0.05 inches around said inner cover layer and golf ball core with a thermoset material having a second shore D hardness less than the first, wherein casting the outer cover layer comprises; (i) placing the golf ball core in core holder; (ii) gelling the thermoset material to a viscosity of between 2,000 cps to 30,000 cps in the first mold half; (iii) placing the golf ball core in to the gelling thermoset material in the first mold half; (iv) disengaging the golf ball core from the core holder after a selected period of time; (v) placing the golf ball core, while still in said first mold half with the thermoset material against a second mold half having additional thermoset material and mating the two mold halves together; and (vi) curing the thermoset material in the mated mold halves; wherein the inner cover layer is formed of a material having a shore D hardness that about 5 to about 50 greater than the shore D hardness of the thermoset material forming the outer cover layer. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
Specification