Multi-layer golf ball
AssigneeAcushnet Company
InventorsMichael J. Sullivan, Derek A. Ladd, Edmund A. Hebert
Life of this patent
Estimating the term…
Abstract
Multi-layer golf balls having a relatively hard outer core surrounding a relatively soft, low compression inner core are provided. The inner core generally has a compression of less than 50 and the inner core and outer core generally have a combined dual core compression of 50 or greater. The outer core generally has a Shore C hardness of 80 or greater. A cover, which can be a single-, dual-, or multi-layer cover, is provided to surround the outer core. A moisture barrier layer is optionally provided between the outer core and the cover. The moisture vapor transmission rate of the moisture barrier layer is preferably less than the moisture vapor transmission rate of the cover.
Claims15
A three-layer golf ball consisting essentially of:
- an inner core layer having a compression of 40 or less and a Shore C hardness of less than 80;
- an outer core layer having a Shore C hardness of 80 or greater and a specific gravity of 1.11 or greater;
- and
- a single-layer cover;
- wherein the hardness of the inner core layer is less than the hardness of the outer core layer and wherein the specific gravity of the outer core layer is greater than or equal to the specific gravity of the inner core layer.
A three-layer golf ball consisting essentially of:
- an inner core layer having a compression of 40 or less, a Shore C hardness of less than 80, and a specific gravity of 1.11 or greater;
- an outer core layer having a Shore C hardness of 80 or greater and a specific gravity less than or equal to the specific gravity of the inner core layer;
- and
- a single-layer cover.
Dependencies are inferred from the claim text.