Granted Patent B2

US 8,932,154 · App. 12/343,151 · Granted Jan 13, 2015

Abstract

Claims (24)

1. A golf ball comprising:

(a) a core;

(b) at least one mantle layer adjacent to the core comprising a polyalkenamer;

(c) an inner cover layer adjacent to the mantle layer, wherein the outer mantle layer is selected from the group consisting of a polyalkenamer, a modified ionomer comprising acidic groups wherein 70 to 100 percent of the acidic groups are neutralized by a metal ion, and any and all combinations thereof;

(d) an inner cover layer adjacent to the outer mantle layer; and

(e) an outer cover layer adjacent to the inner cover layer, wherein the outer layer is selected from a thermoset polyurethane or a thermoset polyurea,

wherein the inner cover layer has a material Shore D hardness that is at least 3 units less than the material Shore D hardness of the outer cover layer, and the inner cover layer has a thickness of less than or equal to 0.050 in; and

wherein the material Shore D hardness of the mantel layer adjacent the inner cover layer is at least 3 units greater than the material Shore D hardness of the inner cover layer.

2. The golf ball of claim 1 , wherein the core has a PGA compression of less than 100.

3. The golf ball of claim 1 , wherein the core has a PGA compression of less than 80.

4. The golf ball of claim 1 , wherein the mantle layer adjacent to the inner cover layer has a material Shore D hardness of 45 to 75, the inner cover layer has a material Shore D hardness of 10 to 65, and the outer cover layer has a material Shore D hardness of 30 to 70.

5. The golf ball of claim 1 , wherein the inner cover layer has a thickness of less than or equal to 0.030 in.

6. The golf ball of claim 1 , wherein the inner cover layer has a thickness of less than or equal to 0.020 in.

7. The golf ball of claim 1 , wherein the mantle layer adjacent to the inner cover layer has a thickness of at least 0.030 in.

8. The golf ball of claim 1 , wherein the outer cover layer has a thickness of at least 0.020 in.

9. The golf ball of claim 1 , wherein the golf ball is a five-piece golf ball comprising:

(a) the core;

(b) an inner mantle layer having a material Shore D hardness of 52;

(c) an outer mantle layer having a material Shore D hardness of 66;

(d) the inner cover layer, wherein the inner cover layer has a material Shore D hardness of 10 to 65; and

wherein the golf ball has an on-the-ball Shore D hardness of 60 measured at the outer cover layer.

10. The golf ball of any one of claim 1 , wherein the inner cover layer has a thickness of 0.005 to 0.025 in.

11. The golf ball of claim 1 , wherein the inner cover layer has a material Shore D hardness of 50 to 70.

12. The golf ball of claim 1 , wherein the outer cover layer comprises a thermoset polyurethane.

Assignments (12)