Patent ID: 7854666

Claim:
A golf club head comprising: a sole having a length l s greater than about 3 inches; a strike face coupled to the sole; a rear portion coupled to the sole; an inner surface; a crown portion coupled to the strike face, the crown portion comprising a major crown portion and a minor crown portion, wherein the entire major crown portion is concave in the face-to-back direction of the club head and in the heel-to-toe direction of the club head, and all of the major crown portion is displaced downward relative to corresponding adjacent portions of the minor crown portion; and a first structural response modifying feature coupled to the major crown portion, the first structural response modifying feature comprising: a constraining member comprising a first dimension h constraining , measured substantially orthogonal to the inner surface of the golf club head, having a maximum value, and a cantilever member coupled to the constraining member, the cantilever member comprising a concave top contour and a second dimension h cantilever , measured substantially orthogonal to the inner surface of the golf club head, having a maximum value, wherein the maximum value of the first dimension h constraining substantially exceeds the maximum value of the second dimension h cantilever .