Patent ID: 8366565

Claim:
A golf club head for a driver, the golf club head having a volume of 400 cc or greater and a club breadth-to-face length ratio of 0.90 or greater, the golf club head comprising: a body member having a crown, a sole, and a heel, and further including a leading edge in the heel, the leading edge defined as the surface of the heel having a vertical slope when the club head is in a 60 degree lie angle position, the body member further having a first cross-section, wherein the first cross-section includes an apex point located on the leading edge, a first crown-side surface extending from the apex point, and a first sole-side surface extending from the apex point, wherein the first cross-section is oriented perpendicular to a centerline of the club head, wherein the apex point represents an origin of a first x 1 - and z 1 -coordinate system oriented in the plane of the first cross-section at a roll angle of approximately 15°, and wherein the first crown-side surface is defined by the following spline points: x 1 -coordinate (mm) 0 6 12 24 36 48 z 1U -coordinate (mm) 0 11 16 22 25 26 wherein the z 1U -coordinate may vary by ±10%.