# US 12,005,323 B2 · Golf club > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,005,323 B2 - Document ID: US12005323B2 - Status: Granted - Kind: B2 - Application number: 17/981,870 - Filed: 2022-11-07 - Published: 2023-03-09 - Granted: 2024-06-11 - Earliest claimed: 2008-01-10 - Assignees: Taylor Made Golf Company, Inc. - Applicants: Taylor Made Golf Company, Inc. - Inventors: Justin Honea; Tim Reed; John Kendall - Web page: https://patentgrep.com/patent/US12005323B2 ## CPC - A63B 53/0466: {wood-type} - A63B 53/00: Golf clubs - A63B 53/0408: {characterised by specific dimensions, e.g. thickness} - A63B 53/0412: {Volume} - A63B 53/0433: {with special sole configurations} - A63B 53/0445: {Details of grooves or the like on the impact surface} - A63B 2209/00: Characteristics of used materials - A63B 2209/02: with reinforcing fibres, e.g. carbon, polyamide fibres - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract A golf club having unique mass properties and all the benefits afforded therefrom. ## Claims ### Claim 1 A golf club comprising: a shaft having a proximal end and a distal end; a grip attached to the shaft proximal end; and a golf club head attached to the shaft distal end producing a club length of at least 41 inches and no more than 45 inches, wherein the golf club head includes: (a) a face positioned at a front portion of the golf club head where the golf club head impacts a golf ball, the face has a loft of at least 12 degrees and no more than 27 degrees, and the face includes an engineered impact point; (b) a sole positioned at a bottom portion of the golf club head; (c) a crown positioned at a top portion of the golf club head; (d) a skirt positioned around a portion of a periphery of the golf club head between the sole and the crown, wherein the face, sole, crown, and skirt define an outer shell that further defines a head volume that is less than 250 cubic centimeters, with a portion of the shell made of non-metallic composite material, and the golf club head has a rear portion opposite the face; (e) a bore having a center that defines a shaft axis which intersects with a horizontal ground plane to define an origin point, wherein the bore is located at a heel side of the golf club head and cooperates with the shaft for attachment to the golf club head, and wherein a toe side of the golf club head is located opposite of the heel side; (f) a blade length measured horizontally from the origin point toward the toe side of the golf club head a distance that is parallel to the face and the ground plane to the most distant point on the golf club head in this direction, wherein the blade length includes a heel blade length section measured in the same direction as the blade length from the origin point to the engineered impact point; (g) a club head mass of less than 230 grams; (h) a center of gravity (CG) located: (1) vertically toward the top portion of the golf club head from the origin point a distance Ycg of less than 0.65 inches; (2) horizontally from the origin point toward the toe side of the golf club head a distance Xcg that is generally parallel to the face and the ground plane; (3) a distance Zcg from the origin toward the rear portion in a direction generally orthogonal to the vertical direction used to measure Ycg and generally orthogonal to the horizontal direction used to measure Xcg, wherein the Zcg distance is less than 0.85 inches; (4) such that a club moment arm is a distance from the CG to the engineered impact point, a transfer distance is a horizontal distance from the CG to a vertical line extending from the origin point and the transfer distance is no more than 40 percent greater than the club moment arm; and (i) a first moment of inertia (MOIy) about a vertical axis through the CG of at least 2000 g*cm2. ### Claim 2 (depends on 1) The golf club of claim 1, wherein a ratio of a second moment of inertia (MOIfc), about a vertical axis through the origin, to the club length is at least 95. ### Claim 3 (depends on 2) The golf club of claim 2, wherein the second moment of inertia (MOIfc) is least 4250 g*cm2, the face includes a top edge height of no more than 2.1 inches, and the face has a center face progression of less than 0.525 inches. ### Claim 4 (depends on 3) The golf club of claim 3, wherein the transfer distance is no more than 25 percent greater than the club moment arm. ### Claim 5 (depends on 4) The golf club of claim 4, wherein the Zcg distance is less than 0.65 inches. ### Claim 6 (depends on 5) The golf club of claim 5, wherein the club moment arm is less than 1.1 inches. ### Claim 7 (depends on 6) The golf club of claim 6, wherein the club moment arm is less than 1.0 inches. ### Claim 8 (depends on 7) The golf club of claim 7, wherein the club moment arm is less than 0.95 inches, and the transfer distance is at least 10 percent greater than the club moment arm. ### Claim 9 (depends on 8) The golf club of claim 8, wherein the second moment of inertia (MOIfc) is least 4500 g*cm2. ### Claim 10 (depends on 9) The golf club of claim 9, a portion of the shell has a density of less than 5 g/cc. ### Claim 11 (depends on 9) The golf club of claim 9, wherein the Ycg distance is less than 0.60 inches. ### Claim 12 (depends on 11) The golf club of claim 11, wherein the Ycg distance is less than 0.55 inches. ### Claim 13 (depends on 9) The golf club of claim 9, wherein the head volume is no more than 170 cubic centimeters. ### Claim 14 (depends on 9) The golf club of claim 9, wherein a discretionary weight is attached to the shell and has a density of at least 15 g/cc. ### Claim 15 (depends on 9) The golf club of claim 9, wherein a ratio of the club moment arm to the heel blade length section is less than 0.9. ### Claim 16 (depends on 9) The golf club of claim 9, wherein a CG angle from the origin point to the center of gravity is no more than 25 degrees. ### Claim 17 (depends on 9) The golf club of claim 9, wherein a ratio of the Ycg distance to the top edge height is less than 0.40. ### Claim 18 A golf club comprising: a shaft having a proximal end and a distal end; a grip attached to the shaft proximal end; and a golf club head attached to the shaft distal end producing a club length of at least 41 inches and no more than 45 inches, the golf club head having: (a) a face positioned at a front portion of the golf club head where the golf club head impacts a golf ball, wherein the face has a loft of at least 12 degrees and no more than 27 degrees, and wherein the face includes an engineered impact point and has a center face progression of less than 0.525 inches; (b) a sole positioned at a bottom portion of the golf club head; (c) a crown positioned at a top portion of the golf club head; (d) wherein an outer shell defines a head volume no more than 250 cubic centimeters, with a portion of the shell made of non-metallic composite material, and a discretionary weight having a density of at least 15 g/cc is attached to the shell, and the golf club head has a rear portion opposite the face and a front-to-back dimension from a furthest forward point on the face to the furthest rearward point at the rear portion of the golf club head; (e) a bore having a center that defines a shaft axis which intersects with a horizontal ground plane to define an origin point, wherein the bore is located at a heel side of the golf club head and cooperates with the shaft for attachment to the golf club head, and wherein a toe side of the golf club head is located opposite of the heel side; (f) a blade length measured horizontally from the origin point toward the toe side of the golf club head a distance that is generally parallel to the face and the ground plane to the most distant point on the golf club head in this direction, wherein the blade length includes a heel blade length section measured in the same direction as the blade length from the origin point to the engineered impact point; (g) a club head mass of less than 230 grams; (h) a center of gravity located: (1) vertically toward the top portion of the golf club head from the origin point a distance Ycg, wherein the Ycg distance is less than 0.65 inches; (2) horizontally from the origin point toward the toe side of the golf club head a distance Xcg that is generally parallel to the face and the ground plane; and (3) a distance Zcg from the origin toward the rear portion in a direction generally orthogonal to the vertical direction used to measure Ycg and generally orthogonal to the horizontal direction used to measure Xcg; (4) such that a club moment arm is a distance from the CG to the engineered impact point, a transfer distance is a horizontal distance from the CG to a vertical line extending from the origin point; and (i) a first moment of inertia (MOIy) about a vertical axis through the CG, a second moment of inertia (MOIfc) about a vertical axis through the origin, and a ratio of the first moment of inertia (MOIy) to the club head mass is at least 14. ### Claim 19 (depends on 18) The golf club of claim 18, wherein the first moment of inertia (MOIy) is at least 3000 g*cm2, the second moment of inertia (MOIfc) is at least 4250 g*cm2, a ratio of the second moment of inertia (MOIfc) to the club length is at least 95, and the Zcg distance is less than 0.85 inches. ### Claim 20 (depends on 19) The golf club of claim 19, wherein the face includes a top edge height of no more than 2.1 inches, the head volume is 170-250 cubic centimeters, the transfer distance is no more than 40 percent greater than the club moment arm, and the second moment of inertia (MOIfc) about a vertical axis through the origin of at least 4500 g*cm2. ### Claim 21 (depends on 20) The golf club of claim 20, wherein a ratio of the second moment of inertia (MOIfc) to the club head mass is at least 23, and the transfer distance is no more than 25 percent greater than the club moment arm. ### Claim 22 (depends on 20) The golf club of claim 20, wherein the Ycg distance is less than 0.60 inches, and the transfer distance is no more than 25 percent greater than the club moment arm. ### Claim 23 (depends on 20) The golf club of claim 20, wherein the Zcg distance is less than 0.65 inches, and the transfer distance is no more than 25 percent greater than the club moment arm. ### Claim 24 (depends on 20) The golf club of claim 20, wherein the Ycg distance is less than 0.55 inches, and the transfer distance is no more than 25 percent greater than the club moment arm. ### Claim 25 (depends on 20) The golf club of claim 20, wherein the club moment arm is less than 1.1 inches, and the transfer distance is no more than 25 percent greater than the club moment arm. ### Claim 26 (depends on 25) The golf club of claim 25, wherein the club moment arm is less than 1.0 inches, a ratio of the club moment arm to the heel blade length section is less than 0.9, and the transfer distance is at least 10 percent greater than the club moment arm. ### Claim 27 (depends on 26) The golf club of claim 26, wherein the club moment arm is less than 0.95 inches, and a CG angle from the origin point to the center of gravity is no more than 25 degrees. ### Claim 28 (depends on 20) The golf club of claim 20, wherein a portion of the shell has a density of less than 5 g/cc. ### Claim 29 (depends on 20) The golf club of claim 20, wherein a ratio of the Ycg distance to the top edge height is less than 0.40.