US 12,440,733 B2
Method of forming a golf club head with improved inertia performance
Ryuichi Sugimae, San Diego, CA (US); Darryl C. Galvan, El Cajon, CA (US); Stephen S. Murphy, Carlsbad, CA (US); Charles E. Golden, Encinitas, CA (US); Peter Larsen, San Marcos, CA (US); and Richard L. Cleghorn, Oceanside, CA (US)
Assigned to Acushnet Company, Fairhaven, MA (US)
Filed by Acushnet Company, Fairhaven, MA (US)
Filed on May 25, 2023, as Appl. No. 18/323,761.
Application 18/323,761 is a continuation of application No. 17/323,725, filed on May 18, 2021, abandoned.
Application 17/323,725 is a continuation in part of application No. 16/780,040, filed on Feb. 3, 2020, granted, now 11,213,730, issued on Dec. 15, 2021.
Application 16/780,040 is a continuation in part of application No. 16/539,622, filed on Aug. 13, 2019, granted, now 11,027,178, issued on May 19, 2021.
Application 16/539,622 is a continuation in part of application No. 16/219,651, filed on Dec. 13, 2018, abandoned.
Prior Publication US 2023/0293952 A1, Sep. 21, 2023
Int. Cl. A63B 53/04 (2015.01)
CPC A63B 53/0408 (2020.08) [A63B 53/042 (2020.08); A63B 53/0433 (2020.08); A63B 53/0437 (2020.08); A63B 2053/0491 (2013.01); A63B 2209/00 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A golf club comprised of a golf club head, a shaft having a shaft axis coupled to the golf club head at a first end of the shaft and a grip coupled to the shaft at a second end of the shaft, wherein the golf club head comprises:
wherein an x-axis is defined as a horizontal axis tangent to said face center with a positive x direction towards a heel of said golf club head, a y-axis is a vertical axis orthogonal to said x-axis with a positive x direction towards said crown, and a z-axis being orthogonal to both said x-axis and said y-axis with a positive z direction extending forward,
a frontal portion comprised of metal comprising a striking face having a face center located at a forward portion of said golf club head;
a non-metallic rear portion coupled to and located aft of said frontal portion, the rear portion comprising a crown at an upper portion of said golf club head; a sole on a bottom portion of said golf club head; and a central support member being coupled to the crown and the sole and extending from a back edge of the golf club head toward a front edge of the rear portion and being located near a central portion of said golf club head in a heel-to-toe orientation, extending substantially in line, along the z-axis, with said face center; a toe side support member coupled to the crown and the sole and extending from the back edge of the golf club head toward the front edge of the rear portion and being located between 20% and 70% of a distance from the central support member and a furthest toe edge, and a heel side support member coupled to the crown and the sole and extending from the back edge of the golf club head toward the front edge of the rear portion and being located between 20% and 70% of a distance from the central support member and a furthest heel edge;
wherein said golf club head has a moment of inertia about said y-axis (MOI-Y) passing through a center of gravity (CG) of said golf club head, said golf club head has a moment of inertia about said z-axis (MOI-Z) passing through said CG, and said golf club head has a moment of inertia about said x-axis (MOI-X) passing through said CG; and
wherein the central support member is comprised of a plurality of angled strut members with upper portions coupled to the crown and lower portions coupled to the sole and that cross each other such that they form angles α in between the upper portions of between 30 degrees and 100 degrees.