Patent ID: 8636609

Claim:
A wood-type golf club head, comprising: a body including a striking plate positioned at a front portion of the golf club head, a sole positioned at a bottom portion of the golf club head, a crown positioned at an upper portion of the golf club head, and a skirt positioned around a periphery of the golf club head between the sole and the crown, wherein the sole, the crown, and the skirt of the golf club head are formed as a unitary cast body, and the striking plate is attached to an opening located at the front portion of the golf club head, wherein at least about 50% of the crown has a thickness that is less than or equal to 0.62 mm and greater than a critical thickness, the critical thickness being between 0.57 mm and 0.58 mm, and wherein the crown exhibits an average permanent crown deformation having an area less than about 0.7% of a crown surface area in response to a standard ball drop test, and wherein the crown includes an equivalent crown span between about 90 mm and about 120 mm; a crown front-to-back radius of curvature between about 60 mm and about 120 mm; and a crown toe-to-heel radius of curvature between about 60 mm and about 120 mm; and wherein the crown is constructed from a material having a modulus of elasticity between about 13 Msi and about 20 Msi.