US2023181978A1PendingUtilityA1

Golf club with improved sole geometry

49
Assignee: JP GOLF USA INCPriority: Jul 16, 2020Filed: Nov 17, 2022Published: Jun 15, 2023
Est. expiryJul 16, 2040(~14 yrs left)· nominal 20-yr term from priority
Inventors:James P. Harrington
A63B 53/047A63B 53/0433A63B 2053/0479A63B 53/0408
49
PatentIndex Score
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Claims

Abstract

In one or more arrangements, a golf club head having improved sole geometry is provided. The golf club head includes a striking face portion located at a frontal portion of the golf club head, a topline located at an upper portion of the golf club head, a heel portion located at a proximal end of the golf club head, a toe portion located at a distal end of the golf club head opposite the heel portion, and a sole located at a lower portion of the golf club head. The golf club head is adapted to receive a shaft. The golf club has a cross section having forward camber with a radius of curvature is less than or equal to a sole width of the sole and that is greater than or equal to a leading edge height of the golf club head.

Claims

exact text as granted — not AI-modified
What is claimed: 
     
         1 . A golf club head, comprising:
 a striking face portion located at a frontal portion of the golf club head;   a topline located at an upper portion of the golf club head;   a heel portion located at a proximal end of the golf club head, adapted to receive a shaft;   a toe portion located at a distal end of the golf club head opposite the heel portion;   a sole, located at a lower portion of the golf club head;   wherein the golf club head has a cross section at a midline of the golf club head;   wherein the cross section is in a plane perpendicular to the striking face portion;   wherein in the cross section, a forward camber of the sole has a radius of curvature at a midpoint of the forward camber;   wherein the radius of curvature is less than or equal to a sole width of the sole;   wherein the radius of curvature is greater than or equal to a leading edge height of the golf club head.   
     
     
         2 . The golf club head of  claim 1 , wherein a length of a curve along the forward camber having the radius of curvature is 50% or more of a length of a total curve along the forward camber from a leading edge of the golf club head to a sole contact point. 
     
     
         3 . The golf club head of  claim 1 , wherein a length of a curve along the forward camber having the radius of curvature is 59% or more of a length of a total curve along the forward camber from a leading edge of the golf club head to a sole contact point. 
     
     
         4 . The golf club head of  claim 1 , wherein the cross section of the golf club head has a sole width that is less than 14 mm. 
     
     
         5 . The golf club head of  claim 1 , wherein the cross section of the golf club head has a sole width between 10 mm and 14 mm. 
     
     
         6 . The golf club head of  claim 1 , wherein the cross section of the golf club head has a sole width between 10 mm and 14 mm;
 the cross section of the golf club head has a bounce angle of 30 to 40 degrees.   
     
     
         7 . The golf club head of  claim 1 , wherein the cross section of the golf club head has a sole radius that is less than 1.4 times the leading edge height. 
     
     
         8 . The golf club head of  claim 1 , wherein the cross section of the golf club head has a ratio of sole radius to depth of camber that is between 2 and 4. 
     
     
         9 . The golf club head of  claim 1 , wherein the cross section of the golf club head includes trailing edge relief. 
     
     
         10 . The golf club head of  claim 1 , wherein the cross section of the golf club head includes trailing edge relief greater than 5 degrees. 
     
     
         11 . The golf club head of  claim 1 , wherein the cross section of the golf club head includes trailing edge relief less than 5 degrees. 
     
     
         12 . The golf club head of  claim 1 , wherein the sole camber percentage of the cross section of the golf club head is greater than or equal to 45%. 
     
     
         13 . The golf club head of  claim 1 , wherein the sole camber percentage of the cross section of the golf club head is greater than or equal to 50%. 
     
     
         14 . The golf club head of  claim 1 , wherein the sole camber percentage of the cross section of the golf club head is greater than or equal to 55%. 
     
     
         15 . The golf club head of  claim 1 , wherein the sole camber percentage of the cross section of the golf club head is greater than or equal to 59%. 
     
     
         16 . The golf club head of  claim 1 , wherein the sole camber percentage of the cross section of the golf club head is greater than or equal to 60%. 
     
     
         17 . The golf club head of  claim 1 , wherein the sole camber percentage of the cross section of the golf club head is greater than or equal to 61%. 
     
     
         18 . The golf club head of  claim 1 , wherein the midpoint is intersected by a center line that is tangent to a bounce line of the golf club head in the cross section;
 wherein bounce line extends from a leading edge of the golf club head to a sole contact point;   wherein the center line intersects a center point located on the bounce line halfway between the leading edge and the sole contact point.   
     
     
         19 . A golf club, comprising:
 a shaft, having an elongated shape extending from an upper end to a lower end;   a grip on the upper end of the shaft; and   a golf club head attached to the lower end of the shaft, wherein the golf club head includes:
 a striking face portion located at a frontal portion of the golf club head; 
 a topline located at an upper portion of the golf club head; 
 a heel portion located at a proximal end of the golf club head, adapted to receive the shaft; 
 a toe portion located at a distal end of the golf club head opposite the heel portion; 
 a sole, located at a lower portion of the golf club head 
 wherein the golf club head has a cross section at a midline of the golf club head; 
 wherein the cross section is in a plane perpendicular to the striking face portion. 
 wherein in the cross section, a forward camber of the sole has a radius of curvature at a center point; 
 wherein the radius of curvature is less than or equal to a sole width of the sole; and 
 wherein the radius of curvature is greater than or equal to a leading edge height of the golf club head. 
   
     
     
         20 . A golf club head, comprising:
 a striking face portion located at a frontal portion of the golf club head;   a topline located at an upper portion of the golf club head;   a heel portion located at a proximal end of the golf club head, adapted to receive a shaft;   a toe portion located at a distal end of the golf club head opposite the heel portion, and a sole, located at a lower portion of the golf club head;   wherein the golf club head has a cross section at a midline of the golf club head;   wherein the cross section is in a plane perpendicular to the striking face portion. wherein in the cross section, the sole has a forward camber with a substantially circular curved portion along a majority of a total curve of the forward camber from the leading edge of the golf club head to a sole contact point of the golf club head.   
     
     
         21 . The golf club head of  claim 20 , wherein the sole has a radius of curvature at a midpoint of the forward camber;
 wherein the radius of curvature is less than or equal to a sole width of the sole;   wherein the radius of curvature is greater than or equal to a leading edge height of the golf club head.   
     
     
         22 . The golf club head of  claim 20 , wherein the cross section of the golf club head has a sole width that is less than 14 mm. 
     
     
         23 . The golf club head of  claim 20 , wherein the cross section of the golf club head has a sole width between 10 mm and 14 mm. 
     
     
         24 . The golf club head of  claim 20 , wherein the cross section of the golf club head has a sole width between 10 mm and 14 mm;
 the cross section of the golf club head has a bounce angle of 30 to 40 degrees.   
     
     
         25 . The golf club head of  claim 20 , wherein the cross section of the golf club head has a sole radius that is less than 1.4 times a leading edge height of the golf club head. 
     
     
         26 . The golf club head of  claim 20 , wherein the cross section of the golf club head has a ratio of sole radius to depth of camber that is between 2 and 4. 
     
     
         27 . The golf club head of  claim 20 , wherein the cross section of the golf club head includes trailing edge relief.

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