IP Library › Patent Application 12047982
Patent Application
App. No. 12/047,982

Multi-layer golf ball

Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US None
App. No.
12/047,982
Filed
Mar 13, 2008
Art Unit
3711
USPC
473/374
Abstract

Golf balls consisting of a single-layer core and a two-layer cover are disclosed. The surface hardness of the core layer is greater than the material hardness of the inner cover layer, and is preferably 80 Shore C or greater.

Claims (38)

1 . A golf ball consisting of:

a solid, single-layer core formed from a rubber composition and having a diameter of from 1.51 inches to 1.59 inches and a surface hardness of 80 Shore C or greater;

an inner cover layer formed from a thermoplastic composition and having a material hardness less than the surface hardness of the core; and

an outer cover layer formed from a polyurethane or polyurea composition.

2 . The golf ball of claim 1 , wherein the outer cover layer has a material hardness less than the surface hardness of the core.

3 . The golf ball of claim 1 , wherein the diameter of the core is from 1.53 inches to 1.55 inches.

4 . The golf ball of claim 1 , wherein the surface hardness of the core is greater than 80 Shore C.

5 . The golf ball of claim 1 , wherein the surface hardness of the core is greater than 85 Shore C.

6 . The golf ball of claim 1 , wherein the surface hardness of the core is 87 Shore C or greater.

7 . The golf ball of claim 1 , wherein the surface hardness of the core is 90 Shore C or greater.

8 . The golf ball of claim 1 , wherein the core has a compression of from 50 to 90.

9 . The golf ball of claim 1 , wherein the core has a compression of from 60 to 80.

10 . The golf ball of claim 1 , wherein the core has a center hardness of 80 Shore C or less.

11 . The golf ball of claim 1 , wherein the core has a center hardness of 70 Shore C or less.

12 . The golf ball of claim 1 , wherein the core has a center hardness of 60 Shore C or less.

13 . The golf ball of claim 1 , wherein the material hardness of the inner cover layer is from 80 Shore C to 90 Shore C.

14 . The golf ball of claim 1 , wherein the material hardness of the inner cover layer is from 82 Shore C to 86 Shore C.

15 . The golf ball of claim 1 , wherein the inner cover layer composition is an ionomeric blend.

16 . The golf ball of claim 1 , wherein the inner cover layer composition comprises an ionomer and a maleic anhydride-grafted polymer.

17 . The golf ball of claim 1 , wherein the outer cover layer composition is a thermosetting polyurethane or polyurea.

18 . The golf ball of claim 1 , wherein the outer cover layer composition is a thermoplastic polyurethane or polyurea.

19 . The golf ball of claim 1 , wherein the rubber composition comprises a base rubber present in an amount of at least 85 wt %, based on the total weight of rubber present in the composition.

20 . The golf ball of claim 1 , wherein the rubber composition comprises a base rubber present in an amount of at least 95 wt %, based on the total weight of rubber present in the composition.

21 . The golf ball of claim 1 , wherein the rubber composition comprises a base rubber present in an amount of at least 99.9 wt %, based on the total weight of rubber present in the composition.

22 . A golf ball consisting of:

a solid, single-layer core formed from a rubber composition and having a diameter of from 1.51 inches to 1.59 inches, a compression of from 60 to 80, a center hardness of 70 Shore C or less, and a surface hardness of greater than 80 Shore C;

an inner cover layer formed from a thermoplastic ionomeric composition and having a material hardness less than the surface hardness of the core; and

an outer cover layer formed from a polyurethane or polyurea composition.

23 . The golf ball of claim 22 , wherein the outer cover layer has a material hardness less than the surface hardness of the core.

24 . The golf ball of claim 22 , wherein the diameter of the core is from 1.53 inches to 1.55 inches.

25 . The golf ball of claim 22 , wherein the surface hardness of the core is 85 Shore C or greater.

26 . The golf ball of claim 22 , wherein the material hardness of the inner cover layer is from 80 Shore C to 90 Shore C.

27 . The golf ball of claim 22 , wherein the ionomeric composition comprises a high acid ionomer.

28 . A golf ball consisting of:

a solid, single-layer core formed from a rubber composition and having a diameter of from 1.53 inches to 1.55 inches, a compression of from 60 to 80, a center hardness of 65 Shore C or less, and a surface hardness of greater than 80 Shore C;

an inner cover layer formed from a thermoplastic ionomeric composition and having a material hardness less than the surface hardness of the core; and

an outer cover layer formed from a polyurethane or polyurea composition.

29 . The golf ball of claim 28 , wherein the outer cover layer has a material hardness less than the surface hardness of the core.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 14, 2008
From: SULLIVAN, MICHAEL J.; LADD, DEREK A.; MORGAN, WILLIAM E.
To: ACUSHNET COMPANY
Reel/Frame 020652/0506 →