Patent ID: 8480512

Claim:
A wood-type golf club head comprising: a face having a ball striking surface configured for striking a ball and a rear surface opposite the ball striking surface, with a thickness defined between the rear surface and the ball striking surface, the face having a thinned portion where the thickness is smaller than the thickness of surrounding areas of the face, the thinned portion forming a recess on the rear surface of the face that is recessed relative to the surrounding areas of the face, the recess having a geometric center that is offset from a geometric center of the face; a body connected to the face and extending rearward from the face to define a cavity bounded by the face and the body; and an insert connected to the rear surface of the face, the insert being received within the recess, wherein the insert comprises a filling material filling the recess, wherein the face is comprised of a second material, and wherein a density of the filling material is lower than a density of the second material, and wherein a geometric center of the insert is offset from the geometric center of the face, and the lower density of the insert causes a center of gravity of the face to be offset from the geometric center of the face in a direction away from the geometric center of the insert.