US Patent 7134971 Golf club head

A golf club head is disclosed that includes a primary element and an insert element formed of different materials. The insert element is located within a cavity formed by the primary element. The cavity is defined by a portion of the primary element that is of unitary construction, and the cavity is positioned between a face and a rear surface of the head. At least a portion of the cavity extends in a direction that is substantially parallel to the first surface. Another aspect of the invention involves a method of manufacturing the golf club head that includes forming the primary element. The cavity is then defined within a portion of the primary element that is of unitary construction, and the insert element is positioned within the cavity.