# US 11,998,811 B2 · Golf club head with heel and toe stiffeners > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,998,811 B2 - Document ID: US11998811B2 - Status: Granted - Kind: B2 - Application number: 17/875,664 - Filed: 2022-07-28 - Published: 2022-11-24 - Granted: 2024-06-04 - Earliest claimed: 2020-09-12 - Assignees: Topgolf Callaway Brands Corp. - Applicants: Callaway Golf Company - Inventors: Patrick C. Davis; Michael J. Murphy - Web page: https://patentgrep.com/patent/US11998811B2 ## CPC - A63B 53/045: {Strengthening ribs} - A63B 53/0408: {characterised by specific dimensions, e.g. thickness} - A63B 53/0412: {Volume} - A63B 53/0416: {Heads having an impact surface provided by a face insert} - A63B 53/0433: {with special sole configurations} - A63B 53/0437: {with special crown configurations} - A63B 53/0466: {wood-type} - A63B 53/08: with special arrangements for obtaining a variable impact - A63B 60/42: Devices for measuring, verifying, correcting or customising the inherent characteristics of golf clubs, bats, rackets or the like, e.g. measuring the maximum torque a batting shaft can withstand - A63B 2053/0491: {with added weights, e.g. changeable, replaceable} - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract A golf club head with plate-like, heel and toe side internal stiffeners is disclosed herein. Each stiffener has a planar portion extending approximately parallel with a portion of the striking face, and is entirely disposed within an interior cavity of the golf club head. The heel side stiffener is connected to top, sole, and heel walls of the club head, with a toe-side edge unconnected to any other portion of the head, and the toe side stiffener is connected to the top, sole, and toe walls of the club head, with a heel-side edge unconnected to any other portion of the head. The toe and heel side edges may have large concavities that distribute mass away from the geometric face center and toward the heel and toe sides of the golf club head. ## Claims ### Claim 1 A golf club head comprising: a body comprising a sole portion, a front wall, a return portion, a hosel, a heel side with a heel side wall, a toe side with a toe side wall, and an interior cavity; wherein the front wall comprises a striking face surface having a rear surface and a geometric face center; a heel side stiffener comprising a first planar front surface, a first planar rear surface, a first upper edge connected to the return portion, a first lower edge connected to the sole portion, a first heel edge connected to the heel side wall, and a first toe edge; a toe side stiffener comprising a second planar front surface, a second planar rear surface, a second upper edge connected to the return portion, a second lower edge connected to the sole portion, a second toe edge connected to the toe side wall, and a second heel edge; wherein each of the heel side stiffener and the toe side stiffener is disposed entirely within the interior cavity; wherein each of the first and second planar front surfaces extends approximately parallel with the rear surface of the front wall; wherein the first toe edge is spaced a distance of at least 1 inch measured along a horizontal y-axis from the second heel edge; wherein each of the heel side stiffener and the toe side stiffener has a midsection and has a variable thickness that tapers inwardly from the midsection between the respective planar front and planar rear surfaces towards at least one of the respective edges of each of the heel side and toe side stiffeners; wherein the first toe edge is spaced a first distance of at least 0.25 inch measured along a horizontal y-axis from the geometric face center; and wherein the second heel edge is spaced a second distance of at least 0.65 inch measured along the horizontal y-axis from the geometric face center. ### Claim 2 (depends on 1) The golf club head of claim 1 wherein the second distance is greater than the first distance. ### Claim 3 (depends on 1) The golf club head of claim 1 wherein the heel side stiffener has an average thickness that is greater than an average thickness of the toe side stiffener. ### Claim 4 (depends on 1) The golf club head of claim 1, wherein the first toe edge is spaced a distance of approximately 1.2 inch from the geometric face center, and wherein the second heel edge is spaced a distance of approximately 1.4 inch from the geometric center. ### Claim 5 (depends on 1) The golf club head of claim 1, wherein each of the heel side stiffener and the toe side stiffener has a maximum thickness of 0.2 inch. ### Claim 6 (depends on 1) The golf club head of claim 1, wherein at least one of the first toe edge and the second heel edge has a concavity. ### Claim 7 (depends on 1) The golf club head of claim 1, wherein each of the first toe edge and the second heel edge has a concavity, such that spacing between the first toe edge and the second heel edge varies. ### Claim 8 A golf club head comprising: a body comprising a sole portion, a front wall, a return portion, a hosel, a heel side with a heel side wall, a toe side with a toe side wall, and an interior cavity; wherein the front wall comprises a striking face surface having a rear surface and a geometric face center; a planar heel side stiffener comprising a first front surface, a first rear surface, a first upper edge connected to the return portion, a first lower edge connected to the sole portion, a first heel edge connected to the heel side wall, and a first toe edge; a planar toe side stiffener comprising a second front surface, a second rear surface, a second upper edge connected to the return portion, a second lower edge connected to the sole portion, a second toe edge connected to the toe side wall, and a second heel edge; wherein each of the planar heel side stiffener and the planar toe side stiffener is disposed entirely within the interior cavity; wherein each of the first and second front surfaces extends approximately parallel with the rear surface of the front wall; wherein the first toe edge is spaced a distance of at least 0.90 inch measured along a horizontal y-axis from the second heel edge; wherein each of the planar heel side stiffener and the planar toe side stiffener has a midsection and has a variable thickness that is no greater than 0.20 inch and that tapers inwardly from the midsection between the respective front and rear surfaces towards at least one of the respective edges of each of the planar heel side and planar toe side stiffeners; wherein the first toe edge is spaced a first distance measured along a horizontal y-axis from the geometric face center; wherein the second heel edge is spaced a second distance measured along the horizontal y-axis from the geometric face center; wherein the second distance is greater than the first distance, and wherein spacing between the first toe edge and the second heel edge is variable. ### Claim 9 (depends on 8) The golf club head of claim 8, wherein the heel side stiffener has an average thickness that is greater than an average thickness of the toe side stiffener. ### Claim 10 (depends on 8) The golf club head of claim 8, wherein the first toe edge is spaced a minimum distance of approximately 1.2 inch from the geometric face center, and wherein the second heel edge is spaced a minimum distance of approximately 1.4 inch from the geometric center. ### Claim 11 (depends on 8) The golf club head of claim 8, wherein the second distance is at least 0.40 inch greater than the first distance. ### Claim 12 (depends on 8) The golf club head of claim 8, wherein the second distance is at least 0.65 inch, and wherein the first distance is at least 0.25 inch. ### Claim 13 (depends on 8) The golf club head of claim 8, wherein the sole portion comprises a weight port. ### Claim 14 (depends on 8) The golf club head of claim 8, wherein at least one of the first toe edge and the second heel edge has a concavity. ### Claim 15 (depends on 8) The golf club head of claim 8, wherein each of the first toe edge and the second heel edge has a concavity. ### Claim 16 (depends on 8) The golf club head of claim 8, wherein the return portion comprises at least one upper rib, and wherein at least one of the first upper edge and the second upper edge is connected to the at least one upper rib. ### Claim 17 (depends on 16) The golf club head of claim 16, wherein the sole portion comprises at least one lower rib, and wherein at least one of the first lower edge and the second lower edge is connected to the at least one lower rib. ### Claim 18 (depends on 8) The golf club head of claim 8, wherein the sole portion comprises at least one lower rib, and wherein at least one of the first lower edge and the second lower edge is connected to the at least one lower rib. ### Claim 19 (depends on 18) The golf club head of claim 18, wherein the return portion comprises at least one upper rib, and wherein at least one of the first upper edge and the second upper edge is connected to the at least one upper rib.