Patent ID: 6939248

Claim:
A wood golf club head having plural structural parameters including a first structural parameter having a first value and a second structural parameter having a second value respectively selected in combination with one another so that said club head is thereby adapted to strike and launch a golf ball with a launch angle and a backspin speed of the golf ball within respective interrelated ranges defined by a region bounded by a first ellipse in a coordinate system having horizontal coordinates on a horizontal axis designating the launch angle and vertical coordinates on a vertical axis designating the backspin speed, wherein said horizontal coordinates and said vertical coordinates both have the same numerical scale and spacing, and wherein said first ellipse has a first centerpoint at a first said horizontal coordinate of 21 degrees and a first said vertical coordinate of 1800 rpm, a first major axis with a length equal to 2100 rpm, a first minor axis with a length equal to 5.7 degrees, and a first tilt angle of 0.25 degrees of said first major axis tilted counterclockwise relative to said vertical axis.