| 主权项 |
1. An aerodynamic golf club head having a post apex attachment promoting region (100) comprising:
A) a hollow body (110) having a club head volume, 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 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; 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); 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);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); andiii) 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 an attachment promoting region length (422) and an attachment promoting region width (424), wherein:
(a) within a vertical section through the crown apex (410) and parallel to the vertical plane created by the shaft axis (SA), a portion of the post apex attachment promoting region (420) has a heel-to-toe radius of curvature (Rh-t) that is less than 4 inches; and(b) a portion of the crown section (400) between the crown apex (410) and the face (200) has an apex-to-front radius of curvature (Ra-f), and wherein the portion of the apex-to-front radius of curvature (Ra-f) contacting the crown apex (410) is at least 25% less than a maximum apex-to-rear radius of curvature (Ra-r) within the post apex attachment promoting region (420). |
