Multi-layer golf ball

• US 9,539,470 B2
• Filed: 01/23/2009
• Issued: 01/10/2017
• Est. Priority Date: 11/28/2001
• Status: Expired due to Fees

• Current Assignee: Acushnet Company (FILA Holdings Corp.)
• Original Assignee: Acushnet Company (FILA Holdings Corp.)
• Inventors: Sullivan, Michael J., Ladd, Derek A.
• Primary Examiner(s): Gorden, Raeann
• Application Number:
  US12/358,358
• Publication Number:
  US 20090131202A1
• Time in Patent Office: 2,909 Days
• Field of Search: 473/373, 473/374, 473/368, 473/376
• US Class Current: 1/1
• CPC Class Codes: A63B 37/0003 Golf balls
• CPC Class Codes: A63B 37/0031 Hardness
• CPC Class Codes: A63B 37/0043 Hardness
• CPC Class Codes: A63B 37/0045 Thickness
• CPC Class Codes: A63B 37/0051 Materials other than polybutadienes; Constructional details
• CPC Class Codes: A63B 37/00621 Centre hardness
• CPC Class Codes: A63B 37/00622 Surface hardness
• CPC Class Codes: A63B 37/0064 Diameter
• CPC Class Codes: A63B 37/0066 Density; Specific gravity

Abstract

Multi-layer golf balls having a thin, relatively hard outer core layer surrounding a large, relatively soft inner core layer are provided. The inner core layer generally has a diameter of from 1.5 inches to 1.55 inches. The outer core layer generally has an outer diameter of from 1.6 inches to 1.64 inches. A cover is provided to surround the outer core layer. A moisture barrier layer is optionally provided between the outer core layer and the cover.

Claims

1. A golf ball consisting of the following three layers:

an inner core layer having a diameter of from 1.51 inches to 1.58 inches, a compression of 100 or less, a center hardness of from 40 Shore C to 60 Shore C, and an outer surface hardness of from 80 Shore C to 95 Shore C;

an outer core layer formed from a rubber-based composition and having a thickness of from 0.01 inches to 0.06 inches and an outer surface hardness of from 58 Shore D to 70 Shore D; and

a cover layer having a material hardness of from 30 Shore D to 55 Shore D.