US 11,752,405 B2
Golf club head with improved inertia performance
Ryuichi Sugimae, San Diego, CA (US); Peter Larsen, San Marcos, CA (US); Stephen S. Murphy, Carlsbad, CA (US); Scott A. Knutson, Escondido, 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); and Hiroshi Kawaguchi, Aliso Viejo, CA (US)
Assigned to Acushnet Company, Fairhaven, MA (US)
Filed by Acushnet Company, Fairhaven, MA (US)
Filed on Nov. 8, 2021, as Appl. No. 17/521,089.
Application 17/521,089 is a division of application No. 16/780,040, filed on Feb. 3, 2020, granted, now 11,213,730.
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 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 2022/0054906 A1, Feb. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A63B 53/08 (2015.01); A63B 53/06 (2015.01); A63B 53/04 (2015.01); F16B 33/00 (2006.01); F16B 21/02 (2006.01)
CPC A63B 53/08 (2013.01) [A63B 53/06 (2013.01); A63B 53/0437 (2020.08); A63B 53/0466 (2013.01); A63B 2053/0491 (2013.01); A63B 2209/00 (2013.01); F16B 21/02 (2013.01); F16B 33/004 (2013.01)] 15 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 comprised of metal and comprising a striking face having a face center located at a forward portion of said golf club head, a crown return extending from a striking face top portion and a sole return extending from a striking face bottom portion;
a non-metallic rear portion located aft of said striking face comprising a crown at an upper portion of said golf club that is coupled to the crown return and a sole on a bottom portion of said golf club that is coupled to the sole return; and
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 y direction towards said crown of said golf club head, and a z-axis being orthogonal to both said x-axis and said y-axis with a positive z direction extending forward,
at least a first weighting member located near a central portion of said golf club head in a heel-to-toe orientation, substantially in line with a vertical plane containing the z-axis with said face center and a second weighting member located near the central portion of said golf club head in the heel-to-toe orientation, substantially in line with the vertical plane containing the z-axis with said face center;
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;
wherein said golf club head has a MOI-Y to MOI-Z ratio of greater than about 1.5; and
wherein the first weighting member is secured to the sole and comprises an internal weight member, an external weight member and a fastener that couples to the internal weight member and secures the internal weight member to the external weight member and compresses the sole between the internal weight member and the external weight member.