# US 12,599,818 B2 · Golf club head > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,599,818 B2 - Document ID: US12599818B2 - Status: Granted - Kind: B2 - Application number: 17/519,975 - Filed: 2021-11-05 - Published: 2022-11-24 - Granted: 2026-04-14 - Earliest claimed: 2021-05-19 - Assignees: Sumitomo Rubber Industries, Ltd. - Applicants: Sumitomo Rubber Industries, Ltd. - Inventors: Jacob Lambeth; Dustin Brekke; Patrick Ripp - Web page: https://patentgrep.com/patent/US12599818B2 ## CPC - A63B 53/0408: {characterised by specific dimensions, e.g. thickness} - A63B 53/02: Joint structures between the head and the shaft - A63B 53/047: {iron-type} - A63B 60/02: Ballast means for adjusting the centre of mass (A63B60/24, A63B60/54 take precedence) - A63B 60/54: with means for damping vibrations - A63B 2053/0479: {Wedge-type clubs, details thereof} - A63B 2053/0491: {with added weights, e.g. changeable, replaceable} - A63B 2209/00: Characteristics of used materials - 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 includes a striking face having a face center and defining a face plane. A vertical center plane is perpendicular to the face plane and passes through the face center. The golf club head further includes a hosel configured to receive a shaft and defining a hosel axis. The golf club head mass is between about 250 g and 320 g, a loft, L, is no less than 39°, a club head center of gravity is spaced rearward from the face plane by a distance, D5, such that D5≤7.69 mm−0.074 mm/°*L, and spaced from the vertical center plane by a distance, D7, that is no greater than 5 mm. A moment of inertia, Iyy, measured about an axis extending in the heel to toe direction and passing through the center of gravity, is no less than 1000 g*cm2. ## Claims ### Claim 1 A golf club head that, when oriented in a reference position, comprises: a striking face having a face center and defining a face plane; a vertical center plane perpendicular to the face plane and passing through the face center; a sole portion; a top portion; a heel portion; a toe portion opposite the heel portion; a hosel configured to receive a shaft and defining a hosel axis; a club head mass between about 250 g and 320 g; a loft, L, no less than 39°; a club head center of gravity spaced rearward from the face plane by a distance, D5, and spaced from the vertical center plane by a distance, D7, D7 being no greater than 5 mm, wherein: D5≤7.69 mm−0.074 mm/°*L; a moment of inertia, Iyy, measured about an axis extending in the heel to toe direction and passing through the center of gravity, Iyy being no less than 1000 g*cm2; and a ratio of Iyy/Izz no less than 0.25, Izz being a moment of inertia measured about a virtual vertical axis passing through the center of gravity. ### Claim 2 (depends on 1) The golf club head of claim 1, wherein Izz is no less than 2800 g*cm2. ### Claim 3 (depends on 1) The golf club head of claim 1, wherein the center of gravity comprises a height, D3, no greater than 22 mm. ### Claim 4 (depends on 1) The golf club head of claim 1, wherein D5 satisfies the following: D5≤5.69 mm−0.074 mm/°*L. ### Claim 5 (depends on 1) The golf club head of claim 1, wherein Iyy is no less than 1100 g*cm2. ### Claim 6 (depends on 1) The golf club head of claim 1, wherein the golf club head comprises a first component comprising a first material having a first melting point and a first density and a second component comprising a second material having a second melting point higher than the first melting point and a second density less than the first density, the second component at least partially encapsulated by the first component. ### Claim 7 (depends on 6) The golf club head of claim 6, wherein the second density is no greater than 2.5 g/cm3. ### Claim 8 (depends on 6) The golf club head of claim 6, wherein the second material comprises a ceramic material. ### Claim 9 (depends on 6) The golf club head of claim 6, wherein a minimum thickness of the first component surrounding the second component is 0.75 mm. ### Claim 10 A golf club head that, when oriented in a reference position, comprises: a striking face having a face center and defining a face plane; a vertical center plane perpendicular to the face plane and passing through the face center; a sole portion; a top portion; a heel portion; a toe portion opposite the heel portion; a hosel configured to receive a shaft and defining a hosel axis; a club head mass between about 250 g and 320 g; a loft, L, no less than 39°; a club head center of gravity spaced rearward from the face plane by a distance, D5, D5 being no greater than 2.2 mm, and spaced from the vertical center plane by a distance, D7, D7 being no greater than 5 mm; a moment of inertia, Iyy, measured about an axis extending in the heel to toe direction and passing through the center of gravity, Iyy being no less than 1000 g*cm2; and a first component comprising a first material having a first melting point and a first density and a second component comprising a second material having a second melting point higher than the first melting point and a second density less than the first density, the second component at least partially encapsulated by the first component, wherein a ratio of Iyy/Izz is no less than 0.25, Izz being a moment of inertia measured about a virtual vertical axis passing through the center of gravity. ### Claim 11 (depends on 10) The golf club head of claim 10, wherein Izz is no less than 2800 g*cm2. ### Claim 12 (depends on 10) The golf club head of claim 10, wherein the center of gravity comprises a height, D3, no greater than 22 mm. ### Claim 13 (depends on 10) The golf club head of claim 10, wherein D5 satisfies the following: D5≤5.69 mm−0.074 mm/°*L. ### Claim 14 (depends on 10) The golf club head of claim 10, wherein Iyy is no less than 1100 g*cm2. ### Claim 15 (depends on 10) The golf club head of claim 10, wherein the second density is no greater than 2.5 g/cm3. ### Claim 16 (depends on 10) The golf club head of claim 10, wherein the second material comprises a ceramic material. ### Claim 17 (depends on 1) The golf club head of claim 1, wherein the ratio of Iyy/Izz is within a range of 0.30 to 0.35. ### Claim 18 (depends on 10) The golf club head of claim 10, wherein the ratio of Iyy/Izz is within a range of 0.30 to 0.35.