Patent ID: 7153220

Claim:
A gold club head comprising: a body comprising at least one recessed portion, said at least one recessed portion including a plurality of receiving portions and at least one engaging portion; at least one weight member mounted in said at least one recessed portion, said at least one weight member including a lid, a plurality of protrusions on the lid, and at least one engaging portion on the lid, at least one of the plurality of protrusions having a weight different from those of other protrusions, the lid having a symmetric shape the same as that of said at least one recessed portion of the body, allowing the lid to be mounted in said at least one recessed portion in one of at least two orientations with respect to said at least one recessed portion that correspond to at least two different locations of a center of gravity of the golf club head, with the plurality of protrusions being respectively received in the plurality of receiving portions, thereby allowing rapid change in a center of the gravity of the golf club head; and at least one engaging member for engaging with said at least one engaging portion of said at least one recessed portion and said at least one engaging portion of said at least one weight member.