Patent ID: 7163467

Claim:
An insert for use with a golf club head, the golf club head having an aperture theretrough, the insert comprising at a pair of spaced-apart end supports that have been adapted for being supported from the aperture in the golf club head, the insert having a plurality of elongated spring members having ends that are of unitary one-piece construction with the spaced-apart end supports, each of the elongated spring members extending between the spaced-apart end supports uninterrupted by connections between the ends to adjacent spring members, each of the spring members having a varying stiffness along their length, the varying stiffness being larger at the ends than at between the ends, the variation in stiffness being produced by a progressive reduction in cross-section of the spring member between the ends, the progression commencing at the ends and progressing towards to about half way between the ends; and at least four elongated spring members and at least two, but not all, of said elongated spring members are connected to one another by at least one bridging connector connecting at least two of said elongated spring members to one another.