US 12,220,620 B2
Golf club head with improved inertia performance
Ryuichi Sugimae, San Diego, CA (US); Charles E. Golden, Encinitas, CA (US); Joey Ashcroft, Oceanside, CA (US); Richard L. Cleghorn, Oceanside, CA (US); Gregory D. Johnson, Tucson, AZ (US); Gentry Ferguson, San Marcos, CA (US); Peter L. Soracco, Carlsbad, CA (US); Noah de la Cruz, San Diego, CA (US); Hiroshi Kawaguchi, Aliso Viejo, CA (US); and Peter Larsen, San Marcos, CA (US)
Assigned to Acushnet Company, Fairhaven, MA (US)
Filed by Acushnet Company, Fairhaven, MA (US)
Filed on Sep. 30, 2022, as Appl. No. 17/956,905.
Application 17/956,905 is a continuation of application No. 17/320,376, filed on May 14, 2021, granted, now 11,577,131.
Application 17/320,376 is a continuation of application No. 16/539,622, filed on Aug. 13, 2019, granted, now 11,027,178, issued on Jun. 8, 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 2023/0026545 A1, Jan. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A63B 53/08 (2015.01); A63B 53/04 (2015.01)
CPC A63B 53/08 (2013.01) [A63B 53/0408 (2020.08); A63B 53/0437 (2020.08); A63B 53/0466 (2013.01); A63B 2053/0491 (2013.01)] 17 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:
a frontal portion further comprising a striking face having a face center, located at a forward portion of the golf club head; and
a rear portion located aft of the striking face comprising a crown at an upper portion of the golf club and a sole on a bottom portion of the golf club;
wherein an x-axis is defined as a horizontal axis tangent to the face center with a positive x direction towards a heel of the golf club head, a y-axis is a vertical axis orthogonal to the x-axis with a positive y direction towards the crown of the golf club head, and a z-axis being orthogonal to both the x-axis and the y-axis with a positive z direction towards the frontal portion of the golf club head;
a first weight member located on the sole proximate the striking face and substantially in line with a vertical plane extending through the face center and along the z-axis;
a second weight member on the sole near a back edge of the rear portion and substantially in line with the vertical plane extending through the face center and along the z-axis;
a central support member comprising a first angled strut member extending from the crown of the golf club head to the sole proximate the first weight member and a third angled strut member extending from the crown to the sole proximate the second weight member,
wherein the first angled strut member and the third angled strut member are substantially planar; and
wherein the golf club head has a moment of inertia about the z-axis (MOI-Z) passing through a center of gravity (CG) of the golf club head of less than about 268 kg-mm2, and
wherein the golf club head has a moment of inertia about the y-axis (MOI-Y) passing through the CG of greater than about 420 kg-mm2, and
wherein the golf club head has a moment of inertia about a shaft axis (MOI-SA) of less than about 850 kg-mm2.