US Patent 7025695 Golf club head

A golf club head comprises a face portion having a front face defining a club face for hitting a ball and a back surface, a sole portion extending backwards from a lower edge of the face portion, and a backside wall extending upwards from the sole portion and having a free upper end, wherein the backside wall comprises a portion inclined frontward in order to lower and deepen the center of gravity while mitigating the shock that the user's hands get at the time of miss shot.