US 12,337,218 B2
Iron-type golf club heads with a dual-density insert
Jeremy N. Snyder, Benbrook, TX (US)
Assigned to Karsten Manufacturing Corporation, Phoenix, AZ (US)
Filed by Karsten Manufacturing Corporation, Phoenix, AZ (US)
Filed on Jun. 27, 2023, as Appl. No. 18/342,654.
Application 18/342,654 is a continuation of application No. 17/505,520, filed on Oct. 19, 2021, granted, now 11,684,834.
Application 17/505,520 is a continuation of application No. 16/914,010, filed on Jun. 26, 2020, granted, now 11,148,020, issued on Oct. 19, 2021.
Application 16/914,010 is a continuation of application No. 16/431,619, filed on Jun. 4, 2019, granted, now 10,695,627, issued on Jun. 30, 2020.
Application 16/431,619 is a continuation of application No. 14/724,435, filed on May 28, 2015, granted, now 10,335,651, issued on Jul. 2, 2019.
Prior Publication US 2023/0330498 A1, Oct. 19, 2023
Int. Cl. A63B 53/04 (2015.01)
CPC A63B 53/047 (2013.01) [A63B 53/0408 (2020.08); A63B 2053/0491 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A golf club head comprising:
a top surface adjacent and above a ball striking surface configured for striking a ball;
wherein the top surface defines an upper portion of the golf club head;
a sole adjacent the ball striking surface and opposite the top surface;
a heel side near a hosel;
and a toe side opposite the hosel; and
a rear surface opposite the ball striking surface comprising an upper blade portion, a blade interface portion, and a lower muscle portion;
wherein the upper blade portion is adjacent to the top surface and extends across the rear surface from the heel side of the rear surface to the toe side of the rear surface and further extends downward from the top surface to the blade interface portion;
wherein the blade interface portion extends across the rear surface from the heel side of the rear surface to the toe side of the rear surface and is a smooth arcuate surface extending between and in direct contact with both the upper blade portion and the lower muscle portion;
wherein the lower muscle portion extends across the rear surface from the heel side of the rear surface to the toe side of the rear surface and the lower muscle portion extends upward from the sole to the blade interface portion, and wherein the lower muscle portion has a thickness greater than the upper blade portion, wherein the upper blade portion has a substantially constant thickness;
a recess provided in the rear surface;
wherein the recess comprises a recess floor that is substantially planar;
an insert received within the recess;
wherein the insert has a first insert having a first density and a second insert having a second density which is less than the first density, wherein the first insert comprises a first material, and the second insert comprises a second material;
wherein the first insert and the second insert are positioned side-by-side and an entirety of the first insert is positioned soleward of the second insert;
wherein the fist material is different from the second mater material;
wherein the first insert and the second insert are located adjacent and contiguous to each other, and
wherein the first insert and the second insert are spaced from the recess floor to define a void.