Invention Grant
US08152653B2 Thick inner cover multi-layer golf ball 有权
厚内层多层高尔夫球

  • Patent Title: Thick inner cover multi-layer golf ball
  • Patent Title (中): 厚内层多层高尔夫球
  • Application No.: US12040147
    Application Date: 2008-02-29
  • Publication No.: US08152653B2
    Publication Date: 2012-04-10
  • Inventor: Michael J. Sullivan
  • Applicant: Michael J. Sullivan
  • Applicant Address: US MA Fairhaven
  • Assignee: Acushnet Company
  • Current Assignee: Acushnet Company
  • Current Assignee Address: US MA Fairhaven
  • Agent William B. Lacy
  • Main IPC: A63B37/06
  • IPC: A63B37/06
Thick inner cover multi-layer golf ball
Abstract:
A golf ball including a core having an outer surface and a geometric center and being formed from a substantially homogenous composition throughout, the core having a diameter of 1.20 inches or less, a compression of 45 or less, and a coefficient of restitution of 0.780 or greater. An outer cover having a thickness of 0.04 inches or less and having a material Shore D hardness of 55 or less is present along with an intermediate layer disposed between the core and the outer cover. The intermediate layer has a thickness of 0.14 inches or greater and a Shore D hardness of 60 to 70. The outer surface of the core has a first hardness and the geometric center of the core has a second hardness, the first hardness being substantially the same as or lower than the second hardness to define a “negative” hardness gradient.
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