Patent ID: 7367897

Claim:
A golf club head, comprising: a body including a face, a sole, a crown, and a skirt, said face and said sole defining a loft angle, said body defining an interior volume, said face including a face interior surface, and said sole including a sole interior surface; a toe receiving area on a toe portion of said skirt; a heel receiving area on a heel portion of said skirt; and an engagement member having two ends, a first end being retained within said toe receiving area and a second end being retained within said heel receiving area, said engagement member being in contact with and exerting a force against said face interior surface; wherein the club head has a coefficient of restitution determined in part by said force; wherein said engagement member is adjustable to exert a variable force against said face interior surface, thereby varying said club head coefficient of restitution; and wherein said engagement member is adjustable from outside the club head.