Granted Patent B2

US 12,643,022 · App. 18/102,224 · Granted Jun 2, 2026

Inventors: Gery M. Zimmerman (Fallbrook, CA); Charles E. Golden (Encinitas, CA); Helene Hipp (San Diego, CA); Gentry Ferguson (San Marcos, CA); Oswaldo Gonzalez (Corona, CA); Ryuichi Sugimae (San Diego, CA)

Assignee: Acushnet Company

A63B60/54A63B53/047A63B53/0416A63B2102/32A63B2209/00

Abstract

Claims (17)

1 . A golf club head comprising:

a striking face;

a back portion behind said striking face extending from a topline to a sole;

a back cover attached to said back portion to enclose a cavity in said golf club head;

a hosel configured to receive a shaft, said hosel located on a heel side of said golf club head, said heel side located opposite a toe side;

a coordinate system centered at a center of gravity of said golf club head, said coordinate system comprising a y-axis extending vertically, perpendicular to a ground plane when said golf club head is in an address position at a prescribed loft and lie, an x-axis perpendicular to said y-axis and parallel to said striking face, extending towards said heel side of said golf club head, and a z-axis, perpendicular to said y-axis and said x-axis and extending through said striking face;

wherein said striking face comprises a front surface configured to strike a golf ball and a rear surface opposite said front surface;

wherein said back cover includes an inside perimeter portion bonded to a shelf on said back portion;

wherein said inside perimeter portion includes a plurality of protrusions;

wherein said back cover includes a spacer ledge protruding from an outer perimeter of said back cover;

wherein said spacer ledge abuts an inner perimeter of said back portion to form a uniform gap between said back cover and said inner perimeter of said back portion;

wherein said back cover includes a central region inward from said inside perimeter portion; and

wherein said central region includes a plurality of discontinuous oblong stiffening members oriented in a topline-to-sole direction.

2 . The golf club head of claim 1 , wherein said plurality of protrusions have a height from a base of said inside perimeter portion between 0.01 mm and 1.0 mm.

3 . The golf club head of claim 1 , wherein an outermost portion of said inside perimeter portion includes a ridge extending entirely around said inside perimeter portion.

4 . The golf club head of claim 3 , wherein said plurality of protrusions have an elongate shape and extend in a direction from said ridge toward an inner periphery of said inside perimeter portion.

5 . The golf club head of claim 1 , wherein said inside perimeter portion is bonded to said shelf using an epoxy.

Assignments (2)

Continuity (23)

References Cited (262)