High volume aerodynamic golf club head having a post apex attachment promoting region
First Claim
1. A high volume aerodynamic golf club head having a post apex attachment promoting region (100) comprising:
- A) a hollow body (110) having a club head volume of at least 400 cc, a face (200), a sole section (300), a crown section (400), a front (112), a back (114), a heel (116), and a toe (118), whereini) the hollow body (110) has a front-to-back dimension (FB) of at least 4.4 inches;
ii) the hollow body (110) has a bore having a center that defines a shaft axis (SA) which intersects with a horizontal ground plane (GP) to define an origin point; and
iii) the hollow body (110) has a center of gravity (CG) located;
(a) vertically toward the crown section (400) from the origin point a distance Ycg in a direction orthogonal to the ground plane (GP);
(b) horizontally from the origin point toward the toe (118) a distance Xcg that is parallel to a vertical plane defined by the shaft axis (SA) and parallel to the ground plane (GP); and
(c) a distance Zcg from the origin toward the back (114) in a direction orthogonal to the vertical direction used to measure Ycg and orthogonal to the horizontal direction used to measure Xcg;
B) the face (200) having a top edge (210) and a lower edge (220), wherein a top edge height (TEH) is the elevation of the top edge (210) above the ground plane (GP), and a lower edge height (LEH) is the elevation of the lower edge (220) above the ground plane (GP), whereini) a maximum top edge height (TEH) is at least 2 inches; and
ii) an apex ratio of the apex height (AH) to the maximum top edge height (TEH) is at least 1.13; and
C) the crown section (400) having a crown apex (410) located an apex height (AH) above the ground plane (GP), wherein;
i) the crown apex (410) is located behind the forwardmost point on the face (200) a distance that is a crown apex setback dimension (412) measured in a direction toward the back (114) and orthogonal to the vertical direction used to measure Ycg and orthogonal to the horizontal direction used to measure Xcg;
ii) the crown apex (410) is located a distance from the origin toward the toe (118) a crown apex x-dimension (416) distance that is parallel to the vertical plane defined by the shaft axis (SA) and parallel to the ground plane (GP); and
iii) the crown section (400) includes a post apex attachment promoting region (420) on the surface of the crown section (400) at an elevation above a maximum top edge plane (MTEP) wherein the post apex attachment promoting region (420) begins at the crown apex (410) and extends toward the back (114), and the post apex attachment promoting region (420) includes;
(a) an attachment promoting region length (422) measured along the surface of the crown section (400) and orthogonal to the vertical plane defined by the shaft axis (SA), and the attachment promoting region length (422) is at least as great as fifty percent of the crown apex setback dimension (412); and
(b) an apex promoting region width (424) measured along the surface of the crown section (400) in a direction parallel to the vertical plane defined by the shaft axis (SA), and the attachment promoting region width (424) is at least as great as the difference between the crown apex x-dimension (416) and the distance Xcg; and
D) wherein the high volume aerodynamic golf club head having a post apex attachment promoting region (100) has a face-on normalized aerodynamic drag force of less than 1.5 lbf when exposed to a 100 mph wind parallel to the ground plane (GP) when the high volume aerodynamic golf club head having a post apex attachment promoting region (100) is positioned in a design orientation and the wind is oriented at the front (112) of the high volume aerodynamic golf club head having a post apex attachment promoting region (100).
15 Assignments
0 Petitions
Accused Products
Abstract
A high volume aerodynamic golf club head having a post apex attachment promoting region with a club head volume of at least 400 cc and a front-to-back dimension of at least 4.4 inches producing a face-on normalized aerodynamic drag force of less than 1.5 lbf when exposed to a 100 mph wind parallel to the ground plane and oriented at the front of the club head. The post apex attachment promoting region is on the surface of the crown section at an elevation above a maximum face height and begins at the crown apex and extends toward the back of the club head. The post apex attachment promoting region is a relatively flat portion of the crown section that is behind the crown apex, yet above the maximum top edge plane, and aides in keeping airflow attached to the club head once it flows past the crown apex.
212 Citations
20 Claims
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1. A high volume aerodynamic golf club head having a post apex attachment promoting region (100) comprising:
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A) a hollow body (110) having a club head volume of at least 400 cc, a face (200), a sole section (300), a crown section (400), a front (112), a back (114), a heel (116), and a toe (118), wherein i) the hollow body (110) has a front-to-back dimension (FB) of at least 4.4 inches; ii) the hollow body (110) has a bore having a center that defines a shaft axis (SA) which intersects with a horizontal ground plane (GP) to define an origin point; and iii) the hollow body (110) has a center of gravity (CG) located; (a) vertically toward the crown section (400) from the origin point a distance Ycg in a direction orthogonal to the ground plane (GP); (b) horizontally from the origin point toward the toe (118) a distance Xcg that is parallel to a vertical plane defined by the shaft axis (SA) and parallel to the ground plane (GP); and (c) a distance Zcg from the origin toward the back (114) in a direction orthogonal to the vertical direction used to measure Ycg and orthogonal to the horizontal direction used to measure Xcg; B) the face (200) having a top edge (210) and a lower edge (220), wherein a top edge height (TEH) is the elevation of the top edge (210) above the ground plane (GP), and a lower edge height (LEH) is the elevation of the lower edge (220) above the ground plane (GP), wherein i) a maximum top edge height (TEH) is at least 2 inches; and ii) an apex ratio of the apex height (AH) to the maximum top edge height (TEH) is at least 1.13; and C) the crown section (400) having a crown apex (410) located an apex height (AH) above the ground plane (GP), wherein; i) the crown apex (410) is located behind the forwardmost point on the face (200) a distance that is a crown apex setback dimension (412) measured in a direction toward the back (114) and orthogonal to the vertical direction used to measure Ycg and orthogonal to the horizontal direction used to measure Xcg; ii) the crown apex (410) is located a distance from the origin toward the toe (118) a crown apex x-dimension (416) distance that is parallel to the vertical plane defined by the shaft axis (SA) and parallel to the ground plane (GP); and iii) the crown section (400) includes a post apex attachment promoting region (420) on the surface of the crown section (400) at an elevation above a maximum top edge plane (MTEP) wherein the post apex attachment promoting region (420) begins at the crown apex (410) and extends toward the back (114), and the post apex attachment promoting region (420) includes; (a) an attachment promoting region length (422) measured along the surface of the crown section (400) and orthogonal to the vertical plane defined by the shaft axis (SA), and the attachment promoting region length (422) is at least as great as fifty percent of the crown apex setback dimension (412); and (b) an apex promoting region width (424) measured along the surface of the crown section (400) in a direction parallel to the vertical plane defined by the shaft axis (SA), and the attachment promoting region width (424) is at least as great as the difference between the crown apex x-dimension (416) and the distance Xcg; and D) wherein the high volume aerodynamic golf club head having a post apex attachment promoting region (100) has a face-on normalized aerodynamic drag force of less than 1.5 lbf when exposed to a 100 mph wind parallel to the ground plane (GP) when the high volume aerodynamic golf club head having a post apex attachment promoting region (100) is positioned in a design orientation and the wind is oriented at the front (112) of the high volume aerodynamic golf club head having a post apex attachment promoting region (100). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification