IP Library Granted Patent US 8,333,669
Granted Patent B2
US 8,333,669 · App. 13/081,702 · Granted Dec 18, 2012

High performance golf ball having a reduced-distance

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Quick Facts
Patent No.
US 8,333,669
App. No.
13/081,702
Granted
Dec 18, 2012
Kind
B2
Abstract

A golf ball having a reduced distance while maintaining the appearance of a normal high performance trajectory. The golf ball has a core, an inner cover layer, and a cover. The core has a diameter of from about 1.300 to 1.620 inches, while the ball has a weight from 1.30 to 1.620 ounces, a diameter from 1.670 to 1.800 inches and a maximum Coefficient of Restitution from about 0.600 to about 0.790 as measured at 125 ft/sec incoming ball velocity. The ball has a drag to weight ratio of greater than 3.0 at a Reynolds number of about 230,000 and a spin ratio of about 0.085.

Claims (25)

1. A golf ball comprising:

a core;

an inner cover layer;

a cover;

the core having a diameter of from about 1.300 to 1.620 inches,

wherein the golf ball has a weight from 1.30 to 1.620 ounces, a diameter from 1.670 to 1.800 inches and a maximum Coefficient of Restitution from about 0.600 to about 0.790 as measured at 125 ft/sec incoming ball velocity and wherein the ball has a drag to weight ratio of greater than 3.0 at a Reynolds number of about 230,000 and a spin ratio of about 0.085.

2. The golf ball of claim 1 , wherein the core comprises a natural or synthetic base rubber selected from the group consisting of polydienes, polyethylenes (PE), ethylene-propylene copolymers (EP), ethylene-butylene copolymers, polyisoprenes, polyisoprenes, polybutadienes (PBR), polystyrenebutadienes (SBR), polyethylenebutadienes, styrene-propylene-diene rubbers,ethylene-propylene-diene terpolymers (EPDM), fluorinated polymers thereof (e.g., fluorinated EP and fluorinated EPDM), butyl rubber, halogenated butyl rubber, and blends of one or more thereof.

3. The golf ball of claim 1 , wherein the core comprises a polybutadiene, a co-reaction agent, a peroxide, and at least one of a butyl rubber, a halogenated butyl rubber, a butyl rubber copolymer, a sulfonated butyl rubber, a polyisobutylene, an ethylene propylene diene monomer rubber, a copolymer of isobutylene and methylstyrene, or a styrene butadiene rubber.

4. The golf ball of claim 3 , wherein the polybutadiene is mixed with an elastomer selected from the group consisting of natural rubbers, polyisoprene rubbers, styrene-butadiene rubbers, synthetic natural rubbers, diene rubbers, saturated rubbers, polyurethane rubbers, polyurea rubbers, metallocene-catalyzed polymers, plastomers, and multi-olefin polymers (homopolymers, copolymers, and terpolymers) in order to modify the properties of the core to create a golf ball with reduced distance.

5. The golf ball of claim 1 , wherein the cover is comprised of a thermoplastic or thermosetting polyurethane or polyurea.

6. The golf ball of claim 5 , wherein the cover has a Shore D hardness of about 40 to 70.

7. The golf ball of claim 6 , wherein the cover has a Shore D hardness of 45-65.

8. The golf ball of claim 1 , wherein the Coefficient of Restitution is from about 0.640 to 0.760.

9. The golf ball of claim 1 , wherein the golf ball weight is from about 1.45 to 1.610 ounces.

10. The golf ball of claim 9 , wherein the golf ball weight is from about 1.500 to 1.600 ounces.

11. The golf ball of claim 1 , wherein the diameter of the golf ball is from about 1.675 to about 1.695 inches.

12. The golf ball of claim 1 , wherein the diameter of the core is from about 1.400 to about 1.550 inches.

13. The golf ball of claim 1 , wherein the diameter of the core is from about 1.450 to about 1.510 inches.

14. The golf ball of claim 1 , wherein the core is comprised of an inner core and at least one core layer, the inner core having a diameter from about 0.50 to about 1.20 inches.

15. The golf ball of claim 1 , wherein the inner cover layer and cover comprise a total thickness of about 0.025 to about 0.12 inches.

16. The golf ball of claim 1 , wherein the inner cover layer and cover layer comprise a total thickness of about 0.040 to about 0.110 inches.

17. The golf ball of claim 1 , wherein the inner cover layer has a thickness of about 0.070 inch and the cover has a thickness of about 0.040 inch.

18. The golf ball of claim 1 , wherein the cover includes a dimple pattern covering at least 60% of the ball surface.

19. The golf ball of claim 1 , wherein the cover includes a dimple pattern covering at least 75% of the ball surface.

20. The golf ball of claim 1 , wherein the golf ball has a lift to weight ratio of greater than about 1.7 at a Reynolds number of about 207,000 and a spin ration of about 0.095.

Assignments (5)
ASSIGNMENT OF SECURITY INTEREST IN PATENTS (ASSIGNS 039506-0030) Recorded Aug 3, 2022
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS RESIGNING ADMINISTRATIVE AGENT
To: JPMORGAN CHASE BANK, N.A., AS SUCCESSOR ADMINISTRATIVE AGENT
Reel/Frame 061521/0414 →
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (027345/0877) Recorded Sep 7, 2016
From: KOREA DEVELOPMENT BANK, NEW YORK BRANCH
To: ACUSHNET COMPANY
Reel/Frame 039939/0087 →
SECURITY INTEREST Recorded Jul 28, 2016
From: ACUSHNET COMPANY
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
Reel/Frame 039506/0030 →
SECURITY AGREEMENT Recorded Dec 8, 2011
From: ACUSHNET COMPANY
To: KOREA DEVELOPMENT BANK, NEW YORK BRANCH
Reel/Frame 027345/0877 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 7, 2011
From: SULLIVAN, MICHAEL J.; AOYAMA, STEVEN
To: ACUSHNET COMPANY
Reel/Frame 026091/0713 →