Patent ID: 8043166

Claim:
A golf club head comprising: a C-shaped body having a deep aft cavity having a length ranging from 1.0 inch to 3.75 inches rearward from a striking plate wall of the C-shaped body; wherein the C-shaped body has a length ranging from 4.75 inches to 5.5 inches, a width of the front wall ranging from 4.75 inches to 5.5 inches and a height of the front wall ranging from 2.5 inches to 3.0 inches; wherein an area of interest is located 20% of the width of the golf club head from each side of the golf club head and 40% of the length of the golf club head from the front wall, and the area of interest has less than 15% of the mass of the golf club head; and wherein the golf club head has a moment of inertia Iyy about the center of gravity greater than 4000 g-cm 2 .