Low deformation golf ball

• US 7,125,345 B2
• Filed: 10/24/2002
• Issued: 10/24/2006
• Est. Priority Date: 10/24/2002
• Status: Expired due to Term

• Current Assignee: Acushnet Company (FILA Holdings Corp.)
• Original Assignee: Acushnet Company (FILA Holdings Corp.)
• Inventors: Sullivan, Michael J., Jordan, Michael D., Ladd, Derek A.
• Primary Examiner(s): Gorden, Raeann
• Application Number:
  US10/279,506
• Publication Number:
  US 20040082407A1
• Time in Patent Office: 1,461 Days
• Field of Search: 473/377, 473/378, 473/373, 473/374, 473/370
• US Class Current: 473/374
• CPC Class Codes: A63B 37/0003 Golf balls
• CPC Class Codes: A63B 37/0031 Hardness
• CPC Class Codes: A63B 37/0033 Thickness
• CPC Class Codes: A63B 37/0041 Coefficient of restitution
• CPC Class Codes: A63B 37/0045 Thickness
• CPC Class Codes: A63B 37/0047 Density; Specific gravity
• CPC Class Codes: A63B 37/0049 Flexural modulus; Bending stiffness
• CPC Class Codes: A63B 37/0062 Hardness
• CPC Class Codes: A63B 37/0064 Diameter
• CPC Class Codes: A63B 37/0065 Deflection or compression
• CPC Class Codes: A63B 37/0076 Multi-piece balls, i.e. having two or more intermediate layers
• CPC Class Codes: A63B 37/0078 Coefficient of restitution
• CPC Class Codes: A63B 37/06 Elastic cores
• CPC Class Codes: C08K 5/37 Thiols
• CPC Class Codes: C08L 21/00 Compositions of unspecified rubbers

Abstract

A golf ball comprising an innermost core, an outer core, and a cover is disclosed. At least a layer of the golf ball is made from a low compression, high coefficient of restitution material, and is being supported by a low deformation, high compression layer. The resulting golf ball has high coefficient of restitution at high and low impact speeds and low compression for controlled greenside play.

Claims

1. A golf ball comprising:

an innermost core having a compression of greater than about 60, a flexural modulus of from 75,000 psi to 225,000 psi, and a Shore C hardness of greater than 70;

a cover;

and an intermediate layer disposed between the innermost core and the cover, the intermediate layer comprising a rubber composition containing a halogenated organosulfur compound and having a Shore C hardness of from 25 to 70;

wherein the golf ball has a coefficient of restitution of greater than about 0.81 at about 125 feet per second.

2. The golf ball of claim 1, wherein the rubber composition comprises at least about 2.2 parts per hundred of the halogenated organosulfur compound.

3. The golf ball of claim 2, wherein the halogenated organosulfur compound is pentachlorothiophenol.

4. The golf ball of claim 3, wherein the halogenated organosulfur compound is zinc salt of pentachlorothiophenol.

5. The golf ball of claim 1, wherein the core has a compression of greater than about 80.

6. The golf ball of claim 1, wherein the golf ball has a coefficient of restitution of greater than 0.75 at 160 feet per second.

7. The golf ball of claim 1, wherein the golf ball has a coefficient of restitution of greater than 0.76 at 160 feet per second.