US 12,263,384 B2
Golf club heads with energy storage characteristics
Martin R. Jertson, Cave Creek, AZ (US); Eric J. Morales, Laveen, AZ (US); Cory S. Bacon, Cave Creek, AZ (US); Calvin Wang, Chandler, AZ (US); Xiaojian Chen, Phoenix, AZ (US); and Travis D. Milleman, Portland, OR (US)
Assigned to Karsten Manufacturing Corporation, Phoenix, AZ (US)
Filed by KARSTEN MANUFACTURING CORPORATION, Phoenix, AZ (US)
Filed on Aug. 15, 2022, as Appl. No. 17/819,747.
Application 17/819,747 is a continuation of application No. 17/119,859, filed on Dec. 11, 2020, granted, now 11,413,508, issued on Aug. 16, 2022.
Application 17/119,859 is a continuation of application No. 16/231,053, filed on Dec. 21, 2018, abandoned.
Application 16/231,053 is a continuation in part of application No. 15/908,427, filed on Feb. 28, 2018, granted, now 11,819,740.
Application 16/231,053 is a continuation in part of application No. 15/628,639, filed on Jun. 20, 2017, granted, now 10,888,743, issued on Jan. 12, 2021.
Application 16/231,053 is a continuation in part of application No. 15/435,054, filed on Feb. 16, 2017, granted, now 11,027,177, issued on Jun. 8, 2021.
Application 15/628,639 is a continuation in part of application No. 14/920,480, filed on Oct. 22, 2015, granted, now 10,688,350, issued on Jun. 23, 2020.
Application 14/920,480 is a continuation in part of application No. 14/920,484, filed on Oct. 22, 2015, abandoned.
Application 15/908,427 is a continuation in part of application No. 14/920,484, filed on Oct. 22, 2015, abandoned.
Application 15/628,639 is a continuation in part of application No. 14/920,484, filed on Oct. 22, 2015, abandoned.
Claims priority of provisional application 62/610,053, filed on Dec. 22, 2017.
Claims priority of provisional application 62/484,529, filed on Apr. 12, 2017.
Claims priority of provisional application 62/462,250, filed on Feb. 22, 2017.
Claims priority of provisional application 62/436,019, filed on Dec. 19, 2016.
Claims priority of provisional application 62/352,495, filed on Jun. 20, 2016.
Claims priority of provisional application 62/313,215, filed on Mar. 25, 2016.
Claims priority of provisional application 62/295,565, filed on Feb. 16, 2016.
Claims priority of provisional application 62/206,152, filed on Aug. 17, 2015.
Claims priority of provisional application 62/131,739, filed on Mar. 11, 2015.
Claims priority of provisional application 62/105,464, filed on Jan. 20, 2015.
Claims priority of provisional application 62/105,460, filed on Jan. 20, 2015.
Claims priority of provisional application 62/068,232, filed on Oct. 24, 2014.
Prior Publication US 2022/0387860 A1, Dec. 8, 2022
Int. Cl. A63B 53/04 (2015.01); A63B 53/08 (2015.01); A63B 60/00 (2015.01)
CPC A63B 53/04 (2013.01) [A63B 53/0466 (2013.01); A63B 53/0475 (2013.01); A63B 53/0408 (2020.08); A63B 53/0433 (2020.08); A63B 53/0437 (2020.08); A63B 53/045 (2020.08); A63B 2053/0491 (2013.01); A63B 53/08 (2013.01); A63B 60/002 (2020.08); A63B 2209/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A hollow golf club head having a closed internal volume, the hollow golf club head comprising:
a strikeface;
a rear wall on an opposite side of the closed internal volume from the strikeface;
the rear wall forming an upper rear wall and a lower rear wall;
a sole coupling the strikeface with the lower rear wall;
a top rail coupling the strikeface with the upper rear wall on an opposite side of the closed internal volume from the sole;
a rear external cavity formed between the upper rear wall and the lower rear wall;
wherein the rear external cavity is bounded by a cavity top wall adjacent to the upper rear wall and a cavity back wall adjacent to the lower rear wall;
a first inflection point located at a juncture of the cavity top wall and the cavity back wall;
a first reference point located at a juncture of the top rail and the upper rear wall;
a second reference point located at a juncture of the upper rear wall and the cavity top wall;
a third reference point located on the cavity top wall at a point closest to the strikeface;
a first reference line connecting the first reference point and the second reference point;
a second reference line connecting the second reference point and the third reference point;
a third reference line connecting the third reference point and the first inflection point;
wherein the cavity top wall, the upper rear wall, and the cavity back wall define a continuous and uninterrupted surface and have a uniform thickness from the first reference point, through the second and third reference points, to the first inflection point;
wherein an inflection angle is measured between the third reference line and the cavity back wall;
wherein the inflection angle is between 70 degrees and 150 degrees;
a ground plane which is a plane tangent to a lowermost point of the sole when the hollow golf club head is placed in an address position;
wherein a maximum rear external cavity width is measured between the second reference point and the third reference point in a direction substantially parallel to the ground plane; and
wherein the maximum rear external cavity width is between 0.15 inch and 1 inch.