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Multi-layered core golf ball

  • US 8,702,535 B2
  • Filed: 12/18/2009
  • Issued: 04/22/2014
  • Est. Priority Date: 11/28/2001
  • Status: Expired due to Term
First Claim
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1. A golf ball comprising:

  • a multi-layer core having a diameter of greater than 1.58 inches and consisting of;

    a center having a diameter of greater than 1.00 inch, a Shore C surface hardness of less than 80, a compression of less than 50, a COR of greater than 0.750, and formed from a thermoset rubber composition;

    a first outer core layer having a thickness of from 0.001 inches to 0.100 inches and formed from a thermoset elastomer composition;

    a second outer core layer having a thickness of from 0.001 inches to 0.100 inches, a Shore C hardness of greater than 80, and formed from a first ionomer composition wherein the ionomer is from 60% to 100% neutralized;

    a third outer core layer having a thickness of from 0.001 inches to 0.100 inches, a Shore C hardness of greater than 90, and formed from a second ionomer composition; and

    a cover layer having a thickness of from 0.010 inches to 0.055 inches, a Shore D hardness of less than 60, and formed from a composition selected from the group consisting of polyurethanes and polyureas.

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