# US 2024/0189673 A1 · Golf club heads with turbulators and methods to manufacture golf club heads with turbulators > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0189673 A1 - Document ID: US20240189673A1 - Status: Published application - Kind: A1 - Application number: 18/582,497 - Filed: 2024-02-20 - Published: 2024-06-13 - Earliest claimed: 2011-10-31 - Assignees: Karsten Manufacturing Corporation - Applicants: Karsten Manufacturing Corporation - Inventors: Erik M. Henrikson; Paul D. Wood; John Hart; Marty R. Jertson; Ryan M. Stokke; Xiaojian Chen; Matthew W. Simone; Yujen Huang - Web page: https://patentgrep.com/patent/US20240189673A1 ## CPC - A63B 53/0466: {wood-type} - A63B 53/04: Heads - A63B 60/52: with slits - A63B 53/0408: {characterised by specific dimensions, e.g. thickness} - A63B 53/0412: {Volume} - A63B 53/0433: {with special sole configurations} - A63B 53/0437: {with special crown configurations} - A63B 53/047: {iron-type} - A63B 53/0487: {for putters (A63B53/065 takes precedence)} - A63B 60/002: {Resonance frequency related characteristics} - A63B 60/006: {Surfaces specially adapted for reducing air resistance} - A63B 60/50: with through-holes (A63B60/18 takes precedence; for stringing purposes A63B49/00) - A63B 60/54: with means for damping vibrations - A63B 2209/02: with reinforcing fibres, e.g. carbon, polyamide fibres - A63B 2225/01: Special aerodynamic features, e.g. airfoil shapes, wings or air passages - Y10T 29/49: Method of mechanical manufacture - Y10T 29/49826: Assembling or joining - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A golf club head includes a crown surface having an apex at a highest point and extending between the face, the rear, the heel and the toe of the golf club head. The golf club head also includes a plurality of crown turbulators projecting from the surface of the crown and located between the face and the apex, wherein each adjacent pair of crown turbulators is separate and spaced apart to define a space between the adjacent pair of crown turbulators. ## Claims ### Claim 1 A golf club head comprising: a crown, a sole, a toe end, a heel end, a face portion defining a loft plane, a rear portion, and a leading edge between the face portion and the crown; a crown insert comprising a top surface and a bottom surface; and a plurality of turbulators including a plurality of ridges integrally formed on the top surface of the crown insert, wherein each ridge of the plurality of ridges includes: a base positioned directly adjacent to the top surface of the crown insert; a top surface opposite the base of the ridge; a ridge apex defined as a maximum height of the ridge measured in a direction perpendicular from the base of the ridge; a front surface comprises a first end closest to the face portion and a second end closest to the ridge apex; and a rear surface defining a portion of the ridge being closest to the rear portion of the golf club head, extending from behind the ridge apex towards the rear portion of the club head; wherein: the crown further comprises a crown apex; the crown further comprises a length measured from the face portion to the rear portion; the crown apex is located in a front region of the crown rearward of the leading edge and along a centerline extending from the face portion to the rear portion of the golf club head; the golf club head further comprises a recess in the crown; the crown insert is configured to be received by the recess in the crown; and the crown insert is formed from a composite material. ### Claim 2 (depends on 1) The golf club head of claim 1, each turbulator of the plurality of turbulators is completely located in a forward two-fifths of the length of the crown. ### Claim 3 (depends on 2) The golf club head of claim 2, wherein the ridge apex of each ridge of the plurality of ridges is positioned within a first 50% of a ridge length. ### Claim 4 (depends on 3) The golf club head of claim 3, wherein the ridge apex is between 0.02 inch (0.51 mm) and 0.07 inch (1.78 mm). ### Claim 5 (depends on 3) The golf club head of claim 3, wherein the crown insert is configured to sit flush with the crown to create a smooth and continuous surface. ### Claim 6 (depends on 3) The golf club head of claim 3, wherein the plurality of ridges extends in a direction substantially perpendicular to the face portion. ### Claim 7 (depends on 3) The golf club head of claim 3, wherein the crown insert is adhesively attached to the recess in the crown. ### Claim 8 (depends on 3) The golf club head of claim 3, wherein the ridge length is substantially greater than a ridge width, wherein the ridge width is defined as extending in a direction from the heel end to the toe end. ### Claim 9 (depends on 3) The golf club head of claim 3, wherein the first end of the front surface is positioned on the leading edge. ### Claim 10 (depends on 3) The golf club head of claim 3, wherein the plurality of ridges is selected from the group consisting of: at least 2 ridges, at least 3 ridges, at least 4 ridges, at least 5 ridges, and at least 6 ridges. ### Claim 11 A golf club head comprising: a crown, a sole, a toe end, a heel end, a face portion defining a loft plane, a rear portion, and a leading edge between the face portion and the crown; a crown insert comprising a top surface and a bottom surface; and a plurality of turbulators including a plurality of ridges integrally formed on the top surface of the crown insert, wherein each ridge of the plurality of ridges includes: a base positioned directly adjacent to the top surface of the crown; a top surface opposite the base of the ridge; a ridge apex defined as a maximum height of the ridge measured in a direction perpendicular from the base of the ridge; a front surface comprises a first end closest to the face portion and a second end closest to the ridge apex; and a rear surface defining a portion of the ridge being closest to the rear portion of the golf club head, extending from behind the ridge apex towards the rear portion of the club head; wherein: the crown further comprises a length measured from the face portion to the rear portion; the golf club head further comprises a recess in the crown; the crown insert is configured to be received by the recess in the crown; at least 50% of the crown is formed from a composite material; the crown insert is formed from a metallic material; and the recess is defined by a depth that ranges from approximately 0.001 inch to approximately 0.050 inch. ### Claim 12 (depends on 11) The golf club head of claim 11, wherein each turbulator of the plurality of turbulators is completely located in a forward two-fifths of the length of the crown. ### Claim 13 (depends on 12) The golf club head of claim 12, wherein the ridge apex of each ridge of the plurality of ridges is positioned within a first 50% of a ridge length. ### Claim 14 (depends on 13) The golf club head of claim 13, wherein the ridge apex is between 0.02 inch (0.51 mm) and 0.07 inch (1.78 mm). ### Claim 15 (depends on 14) The golf club head of claim 14, wherein the front surface is angled from the loft plane at a range from 87 degrees to 100 degrees. ### Claim 16 (depends on 15) The golf club head of claim 15, wherein the ridge apex of each ridge of the plurality of ridges is positioned within the first 50% of the ridge length. ### Claim 17 (depends on 14) The golf club head of claim 14, wherein each ridge of the plurality of ridges comprises: a pair of side walls extending from the base to the top surface, and wherein each side wall tapers towards the top surface at an angle of no less than 60 degrees. ### Claim 18 (depends on 14) The golf club head of claim 14, wherein the leading edge comprises a leading edge plane forming a leading edge angle with the loft plane, wherein the first end of the front surface of each ridge of the plurality of ridges being at least partly located between the leading edge plane and the rear portion, but not extending beyond the leading edge plane. ### Claim 19 (depends on 14) The golf club head of claim 14, wherein the plurality of ridges is selected from the group consisting of: at least 2 ridges, 3 ridges, at least 4 ridges, at least 5 ridges, and at least 6 ridges. ### Claim 20 (depends on 14) The golf club head of claim 14, wherein: a pair of ridges are separate and spaced apart to define a space between the pair of ridges, and each ridge extends between the heel end and the toe end to define a width and extends between the face portion and the rear portion to define a length; the length is substantially greater than the width for each ridge of the pair of ridges; the space between each the pair of ridges is substantially greater than the width of each adjacent pair of ridges that define the space.