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Golf balls having a multi-layered cover with a thermoplastic inner cover layer

  • US 9,409,062 B2
  • Filed: 07/16/2015
  • Issued: 08/09/2016
  • Est. Priority Date: 11/28/2001
  • Status: Expired due to Fees
First Claim
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1. A golf ball consisting essentially of:

  • an inner core layer formed from a thermoset rubber composition and having a diameter of 1.2 inches or greater, a center hardness (Hcenter material) of 60 Shore C or greater, and an outer surface hardness (Hcenter surface) of 80 Shore C or greater;

    an outer core layer formed from a highly neutralized polymer composition and having a material hardness (Houter core material) of 35 Shore D or greater;

    an inner cover layer formed from a thermoplastic composition having a material hardness (Hinner cover material) of 95 Shore C or less;

    an intermediate cover layer formed from a thermoplastic composition having a material hardness(Hintermediate cover material) of 80 Shore C or greater, the Hintermediate cover material being greater than the Houter core material; and

    an outer cover layer formed from a composition selected from the group consisting of polyurethanes, polyureas, and copolymers and blends thereof.

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