Patent ID: 8516675

Claim:
A method for forming a driver type golf club head, the method comprising: orienting a golf club head using a largest tangent circle method, wherein the largest tangent circle method comprises placing a club head into a Cartesian Coordinate System (CCS) comprising a X axis comprising a +X axis and a −X axis, a Y axis comprising a +Y axis and a −Y axis, and a Z axis comprising a +Z axis and a −Z axis, wherein three perpendicular planes exists, the three perpendicular planes being XY, YZ and XZ, and the three perpendicular planes intersecting at an origin point; the club head comprising a body, a hosel, a crown a sole and a face; orienting a hosel axis line of the club head in the YZ plane passing through the origin point; orienting the club head with the hosel axis line at an angle equal to a designed lie angle in relation to the −Y axis rotating around the +Z axis; orienting the club head by pivoting the club head around the hosel axis line until a point on the sole is tangent to a plane parallel with the XY plane that has a greatest intersection point value on the Z axis; viewing the club head along the X axis and projecting a crown silhouette curve and a sole silhouette curve onto a measurement plane which is parallel to the YZ plane; placing a circle on the measurement plane between the projected crown silhouette curve and the projected sole silhouette curve, enlarging the circle until the circle has a maximum diameter; creating a tangent line from a tangent point where the circle touches the projected crown silhouette curve to a tangent point where the circle touches the projected sole silhouette; forming a golf club head having an apex point positioned in a crown apex zone; and designing a crown curve having some portion exist above a 5.25 inch radius arc, the radius arc beginning at the apex point and extending rearward toward a back end of the golf club head.