×

Multi-layer core golf ball

  • US 10,166,442 B2
  • Filed: 01/26/2018
  • Issued: 01/01/2019
  • Est. Priority Date: 08/05/2013
  • Status: Active Grant
First Claim
Patent Images

1. A golf ball comprising a core and a cover, wherein the core comprises:

  • a solid inner core layer formed from an unfoamed composition and having a diameter of 1.10 inches or less, a center Shore C hardness (Hcenter) of 15 or less, and an interface Shore C hardness (Hinner core interface) of from 5 to 15;

    one or more optional intermediate core layers; and

    an outer core layer having a thickness of 0.20 inches or greater, an inner surface Shore C hardness (Houter core inner surface) of from 40 to 75, and an outer surface Shore C hardness (Houter surface) of 80 or greater;

    wherein Houter surface

    Hcenter

    70;

    wherein the inner core layer has a hardness gradient slope (Sinner core) defined as

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×