Back to results
US 9,308,419 B2Granted
Multi-layer golf ball
AssigneeAcushnet Company
InventorsMichael J. Sullivan, Derek A. Ladd, William E. Morgan, Hebert C. Boehm
Life of this patent
Estimating the term…
Abstract
Golf balls consisting of a dual core and a dual cover are disclosed. The surface hardness of the outer core layer is greater than the material hardness of the inner cover layer, and is preferably 75 Shore C or greater.
Claims7
A golf ball consisting essentially of:
- a center formed from a first rubber composition and having a diameter of from 0.75 inches to 1.19 inches, a center hardness of 65 Shore C or greater, and a surface hardness of 80 Shore C or greater;
- an outer core layer formed from a second rubber composition and having a surface hardness of 85 Shore C or greater;
- an inner cover layer formed from a thermoplastic composition and having a material hardness of less than 95 Shore C;
- and
- an outer cover layer formed from a thermosetting polyurethane or polyurea composition;
- wherein the surface hardness of the center is at least 10 Shore C units greater than the center hardness;
- wherein the surface hardness of the outer core layer is at least 20 Shore C units greater than the center hardness;
- and
- wherein the surface hardness of the outer core layer is greater than the material hardness of the inner cover layer.
6 more elements
Dependencies are inferred from the claim text.