US Patent 7654913 Weld structure of metal club head

A golf club head is formed with openings respectively on top and bottom sides thereof and a circumferential recessed groove is formed in the club head along a circumference of each opening. Pegs are formed in and spaced along the circumferential grooves. A faceplate and a bottom plate are provided, each having a circumferential edge along which notches are formed in a spaced manner to correspond to the pegs. Thus, when the faceplate and the bottom plate are received in the top and bottom openings respectively to be supported by the circumferential grooves, the notches respectively snugly fit over the pegs to thereby securely and properly hold the faceplate and the bottom plate in position for subsequently welding operation. Thus, the subsequent welding operation can be carried out in a smooth manner without any underside shifting of the faceplate and bottom plate with respect to the club head.