| 主权项 |
1. An aerodynamic golf club head (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); 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 maximum top edge height (TEH) is at least 2 inches; and C) the crown section (400) having a crown apex (410) located an apex height (AH) above a ground plane (GP) and having an apex ratio of the apex height (AH) to the maximum top edge height (TEH) of at least 1.13, wherein:
(i) within a front-to-back vertical section through the crown apex (410) and perpendicular to a vertical plane created by a shaft axis (SA), 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 a portion of the crown section (400) between the crown apex (410) and the back (114) of the hollow body (110) has an apex-to-rear radius of curvature (Ra-r),(ii) within a heel-to-toe vertical section through the crown apex (410) and parallel to the vertical plane created by the shaft axis (SA), a portion of the crown section (400) above the top edge height (TEH) has a heel-to-toe radius of curvature (Rh-t); and(iii) a majority portion of the crown section (400) is composed of a nonmetallic material having a density less than a portion of the sole section (300), and a portion of the crown section (400) has at least one of (a) the heel-to-toe radius of curvature (Rh-t) in contact with the crown apex (410) is less than 4 inches, (b) the apex-to-rear radius of curvature (Ra-r) is greater than 5 inches on a portion of the crown section (400) above the top edge height (TEH) that is composed of the nonmetallic material, and (c) the apex-to-front radius of curvature (Ra-f) in contact with the crown apex (410) is at least 25% less than a portion of the apex-to-rear radius of curvature (Ra-r) located above the top edge height (TEH). |
