US 12,083,394 B2
Localized milled golf club face
Erik M. Henrikson, Phoenix, AZ (US); Matthew W. Simone, Phoenix, AZ (US); Yujen Huang, Pingtung (TW); and Ryan M. Stokke, Anthem, AZ (US)
Assigned to Karsten Manufacturing Corporation, Phoenix, AZ (US)
Filed by KARSTEN MANUFACTURING CORPORATION, Phoenix, AZ (US)
Filed on Mar. 10, 2022, as Appl. No. 17/654,370.
Application 17/654,370 is a continuation of application No. 17/247,350, filed on Dec. 8, 2020, granted, now 11,278,774.
Application 17/247,350 is a continuation of application No. 16/723,026, filed on Dec. 20, 2019, granted, now 10,857,430, issued on Dec. 8, 2020.
Application 16/723,026 is a continuation in part of application No. 16/438,268, filed on Jun. 11, 2019, granted, now 10,596,423, issued on Mar. 23, 2020.
Application 16/438,268 is a continuation of application No. 15/847,812, filed on Dec. 19, 2017, granted, now 10,343,034, issued on Jul. 9, 2019.
Claims priority of provisional application 62/784,199, filed on Dec. 21, 2018.
Claims priority of provisional application 62/435,944, filed on Dec. 19, 2016.
Prior Publication US 2022/0193506 A1, Jun. 23, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A63B 53/04 (2015.01)
CPC A63B 53/0466 (2013.01) [A63B 53/0408 (2020.08); A63B 53/042 (2020.08); A63B 53/0445 (2020.08)] 18 Claims
OG exemplary drawing
 
10. A golf club head comprising:
a front body and a rear body that cooperate to define a hollow internal club head volume;
wherein the front body comprises a strike plate and a frame integrally formed with each other to form a cup face; the strike plate further comprising a ball striking surface having a striking surface texture characteristic of milling and a back surface having a back surface texture characteristic of milling;
wherein the back surface is milled and machined to adjust at least one of: a thickness of the ball striking surface, a bulge radius of the ball striking surface, or a roll radius of the ball striking surface;
wherein the cup face extends rearward to form a portion of a crown and a sole;
wherein the strike plate is disposed at a loft angle of from 8 degrees to 24 degrees;
the striking surface texture is uniform across the strike plate when measured in a predominant milling pattern direction and comprises a plurality of peaks, a plurality of valleys, and a reference mid-plane extending in between the plurality of peaks and the plurality of valleys, wherein below the reference mid-plane is a negative distance, and above the reference mid-plane is a positive distance, and the plurality of peaks and the plurality of valleys extend an average maximum distance of at least −200 micro inches (−5.08 micro meters) to at least 200 micro inches (5.08 micro meters);
the surface texture further comprises a central portion that is surrounded by a peripheral portion;
the central portion comprises a concentric milling pattern extending in a first predominant pattern direction;
the peripheral portion comprises a linear milling pattern extending in a second predominant pattern direction;
the surface texture further comprises an average surface roughness (RA), representing an arithmetic average value of absolute surface deviations relative to a mean center line, a surface void parameter (WVoid), representing an average depth of the plurality of valleys relative to a closed reference surface created using a morphologic closing filter applied to the surface texture, and a surface contact parameter (WVDCL), representing the amount of contact between the closed reference surface and the surface texture; and
wherein the striking surface texture, measured within at least one of a vertical cutting plane or a second cutting plane that is orthogonal to both the vertical cutting plane and the ball striking surface, is characterized by at least one of: a ratio of RA to WVoid being greater than about 4; or, a WVDCL parameter being greater than about 24%; and
wherein the striking surface texture and the back surface texture are identical.