| CPC A63B 53/0441 (2020.08) [A63B 53/0412 (2020.08); A63B 53/0437 (2020.08); A63B 53/0445 (2020.08); A63B 53/0466 (2013.01)] | 30 Claims |

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1. A golf club head, comprising:
a body having a frame having a hosel portion with a hosel bore defining a shaft axis and a shaft axis plane, a face, a sole, and a crown opening formed in part by the frame; and
a nonmetallic crown attached to the frame and covering the crown opening and defining an interior cavity, wherein the nonmetallic crown has a crown leading edge,
wherein the face has a face center and defines a loft plane that is tangent to the face center, an origin for an x-axis, y-axis, and z-axis, wherein the x-axis is tangential to the face at the origin and parallel to a ground plane, the y-axis is perpendicular to the x-axis and extends away from the face and is parallel to the ground plane, and the z-axis extends vertically from face center and is perpendicular to the ground plane,
a vertical center face plane includes the y-axis and the z-axis and creates a vertical center face section through the golf club head having a center face offset loft plane that is parallel to the loft plane and offset an offset plane distance from the loft plane,
at least a first heelward offset vertical plane is parallel to the vertical center face plane and offset along the x-axis a distance of 5 millimeters toward the hosel portion, and creates a 5 mm offset vertical section having a 5 millimeter heelward localized loft plane and a 5 millimeter heelward localized offset loft plane offset the offset plane distance from the 5 millimeter heelward localized loft plane,
at least a first toeward offset vertical plane is parallel to the vertical center face plane and offset along the x-axis a distance of 5 millimeters away from the hosel portion, and creates a −5 millimeter offset vertical section having a 5 millimeter toeward localized loft plane and a 5 millimeter toeward localized offset loft plane offset the offset plane distance from the 5 millimeter toeward localized loft plane,
the offset plane distance is 6 millimeters and within the vertical center face section a portion of the crown leading edge is forward of the center face offset loft plane, within the 5 millimeter offset vertical section a portion of the crown leading edge is forward of the 5 millimeter heelward localized offset loft plane, and within the −5 millimeter offset vertical section a portion of the crown leading edge is forward of the 5 millimeter toeward localized offset loft plane, and
within the vertical center face section a portion of the nonmetallic crown in front of the center face offset loft plane has a center face 3-point method crown radius of curvature of less than 25 mm, within the 5 millimeter offset vertical section a portion of the nonmetallic crown in front of the 5 millimeter heelward localized offset loft plane has a 5 millimeter heelward 3-point method crown radius of curvature of less than 25 mm, and within the −5 millimeter offset vertical section a portion of the nonmetallic crown in front of the 5 millimeter toeward localized offset loft plane has a 5 millimeter toeward 3-point method crown radius of curvature of less than 25 mm.
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