Patent ID: 8951146
Filing Date: 2015-02-10
Classification: A63B

Abstract:
1. A golf club head comprising: a striking face having an upper perimeter, a lower perimeter, a heel portion, a toe portion, and a face center located at a geometric center of said striking face; a posterior body portion comprising a crown portion and a sole portion, wherein the crown portion is coupled to the upper perimeter of the striking face and the sole portion is coupled to the lower perimeter of the striking face; a hosel for receiving a shaft; an x-axis extending through said face center, said x-axis substantially parallel to said striking face and extending from said heel portion towards said toe portion; a z-axis extending through said face center, said z-axis perpendicular to said x-axis and extending from said sole towards said crown; and a y-axis extending through said face center; said y-axis perpendicular to said x-axis and said z-axis and extending from striking face towards said posterior body portion; wherein the heel portion is positioned below the hosel and the club head has a c.g. positioned towards the toe portion of the striking face by a distance, Az, from a vertical plane running perpendicularly through the crown, the sole, and the striking face, wherein said vertical plane is co-planar with said z-axis and said y-axis; wherein the club head further comprises a horizontal plane parallel to and positioned between the crown portion and the sole portion as to intersect the heel and the toe, wherein said horizontal plane is co-planar with said x-axis and said y-axis; wherein the striking face comprises bulge and roll, the bulge having at least 2 radii of curvature; and wherein a center of at least 1 of the bulge radii of curvature is positioned an equal distance from the vertical plane as the c.g.