# US 12,766,375 B2 · Golf club heads with normalized impact response > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,766,375 B2 - Document ID: US12766375B2 - Status: Granted - Kind: B2 - Application number: 18/472,219 - Filed: 2023-09-21 - Published: 2024-03-21 - Granted: 2026-10-20 - Earliest claimed: 2022-09-21 - Assignees: Karsten Manufacturing Corporation - Applicants: Karsten Manufacturing Corporation - Inventors: Eric J. Morales; Lance R. White; Joshua A. Degerness; Mitchell J. Simonet - Web page: https://patentgrep.com/patent/US12766375B2 ## CPC - A63B 53/0466: {wood-type} - A63B 53/0408: {characterised by specific dimensions, e.g. thickness} - A63B 53/0416: {Heads having an impact surface provided by a face insert} - A63B 2053/0495: {moving on impact, slidable, spring or otherwise elastically biased} - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract A wood-type golf club head having a normalized impact response across the entire face of the club. Components of the club head can provide structural rigidity to the club head at rest and during low-energy impacts and provide flexure during high-energy impacts. ## Claims ### Claim 1 A golf club head, comprising: a crown, a sole, a heel end, a toe end, a front portion, and a rear that define an internal cavity; a strikeface located at the front portion; wherein: the strikeface comprises a rear surface facing the internal cavity and a striking surface opposite the rear surface; and the sole comprises an internal surface facing the internal cavity and an external surface opposite the internal surface; and a resilient member disposed in the internal cavity and comprising: a base, comprising: a base end coupled to the internal surface of the sole; a free end proximate the rear surface of the strikeface; a first arm comprising a first forward surface and a first rearward surface; a second arm comprising a second forward surface and a second rearward surface; and a plurality of support members extending from the first rearward surface to the second forward surface within a relatively rigid section; and a contact member, wherein: the contact member is a different material than the base; and the contact member is coupled to the base and configured to continuously engage the rear surface of the strikeface at rest. ### Claim 2 (depends on 1) The golf club head of claim 1, wherein the contact member is a spherical shape. ### Claim 3 (depends on 1) The golf club head of claim 1, wherein the resilient member comprises a base height measured as a distance from a ground plane to a topmost point of the base in a direction parallel to a y-axis between 0.50 inches and 1.50 inches. ### Claim 4 (depends on 1) The golf club head of claim 1, wherein the base comprises a mass between 0.50 grams and 3.00 grams. ### Claim 5 (depends on 1) The golf club head of claim 1, wherein the contact member is made from a material selected from a group consisting natural rubber, synthetic rubber, and flexible TPE material. ### Claim 6 (depends on 5) The golf club head of claim 5, wherein the contact member has a hardness between 45 A to 100 A. ### Claim 7 (depends on 1) The golf club head of claim 1, wherein the base is made a material selected from a group consisting of composite, titanium, aluminum, and steel. ### Claim 8 A golf club head, comprising: a crown, a sole, a heel end, a toe end, a front portion, and a rear that define an internal cavity; a strikeface located at the front portion; wherein: the strikeface comprises a rear surface facing the internal cavity and a striking surface opposite the rear surface; the sole comprises an internal surface facing the internal cavity and an external surface opposite the internal surface; and a resilient member disposed in the internal cavity and comprising: a base and a contact member; wherein: the base comprises a base end and free end, wherein the base end is coupled to the internal surface of the sole and the free end is proximate the rear surface of the strikeface; and the contact member is coupled to the base and configured to continuously engage the rear surface of the strikeface at rest; and wherein the base further comprises a relatively rigid section extending from the base end to an intermediate section, and a relatively flexible section extending from the intermediate section to the free end. ### Claim 9 (depends on 8) The golf club head of claim 8, wherein the base of the resilient member comprises: a first arm and a second arm; wherein the first arm comprises a first forward surface and a first rearward surface and the second arm comprises a second forward surface and a second rearward surface; a plurality of support members extends from the first rearward surface to the second forward surface within the relatively rigid section. ### Claim 10 (depends on 8) The golf club head of claim 8, wherein the contact member is a spherical shape. ### Claim 11 (depends on 8) The golf club head of claim 8, wherein the resilient member comprises a base height measured as a distance from a ground plane to a topmost point of the base in a direction parallel to a y-axis between 0.50 inches and 1.50 inches. ### Claim 12 (depends on 8) The golf club head of claim 8, wherein the base comprises a mass between 0.50 grams and 3.00 grams. ### Claim 13 (depends on 8) The golf club head of claim 8, wherein the contact member is a different material than the base. ### Claim 14 (depends on 13) The golf club head of claim 13 wherein the contact member is made from a material selected from a group consisting natural rubber, synthetic rubber, and flexible TPE material. ### Claim 15 (depends on 14) The golf club head of claim 14, wherein the contact member has a hardness between 45 A to 100 A. ### Claim 16 (depends on 13) The golf club head of claim 13, wherein the base is made a material selected from a group consisting of composite, titanium, aluminum, and steel.