Patent ID: 7717807

Claim:
A wood-type golf club head comprising: a main body comprising a front portion, a crown portion, a partial toe portion, a partial heel portion, a partial rear portion and a partial sole portion, the main body composed of a stainless steel material, the main body having a mass ranging from 100 grams to 150 grams, the main body having a volume of 16.0 cubic centimeters, the front portion having a thickness ranging from 0.050 inch to 0.125 inch, the partial heel portion, the partial rear portion and the partial sole portion having a thickness ranging from 0.020 inch to 0.050 inch; and a minor body attached to the main body, the minor body comprising a sole wall, a partial toe wall, a partial heel wall and a partial rear wall, wherein the partial toe wall is welded to the partial toe portion, the partial heel wall is welded to the partial heel portion, the partial rear wall is welded to the partial rear portion, and the sole wall is welded to the partial sole portion, the minor body composed of a tungsten alloy material, the tungsten alloy material comprising stainless steel and tungsten, the minor body having a mass ranging from 80 grams to 100 grams; wherein the golf club head has a mass ranging from 200 grams to 250 grams and wherein a moment of inertia, I yy , a bout a Y axis of a center of gravity of the golf club head ranges from 900 g-cm 2 to 1700 g-cm 2 .