MULTI-LAYER GOLF BALL

摘要

A multi-layer golf ball includes a core having an outer surface, and intermediate layer surrounding the core, and a cover surrounding the intermediate layer. The intermediate layer defines a radially inward facing surface that is flush with the outer surface of the core, and the cover defines the outermost surface of ball. The outer surface of the core includes a plurality of polygonal land portions aligned on a common sphere. The outer surface of the core further defines a first plurality of annular grooves disposed about a first axis, a second plurality of annular grooves disposed about a second axis, and a third plurality of annular grooves disposed about a third axis. The first axis, the second axis, and the third axis are mutually orthogonal, and each groove respectively extends from the common sphere and is concave relative to the core.

主权项

1. A multi-layer golf ball comprising:
a core having an outer surface that includes:
a plurality of polygonal land portions aligned on a common sphere; anda plurality of grooves separating the respective land portions and extending radially inward from the sphere; an intermediate layer surrounding the core and having a radially inward surface that is bonded to the outer surface of the core across the entire outer surface; a cover layer surrounding the intermediate layer and defining an outermost portion of the ball; wherein the plurality of grooves includes a first set of annular grooves disposed about a first axis, a second set of annular grooves disposed about a second axis, and a third set of annular grooves disposed about a third axis; and wherein the first axis, the second axis, and the third axis are mutually orthogonal.