Patent ID: 6849005

Claim:
An iron type golf club head having a club head body and means for connection to a shaft; said club head body including a heel, toe, a ball striking face, a top ridge surface and bottom sole surface, wherein the improvement comprises: a rear surface having separate upper and lower portions; said upper portion and said lower portion extending across said rear surface from adjacent said heel to adjacent said toe; said upper portion extending downwardly toward said bottom sole approximately one-third the distance between said top ridge and said bottom sole; said lower portion located below said upper portion and said lower portion being within an approximate lower two-thirds of said rear surface in a direction between said bottom sole and said top ridge; the one third upper portion and the two thirds lower portion relationship being maintained entirely across said rear surface from adjacent said heel to adjacent said toe; said lower portion including a heel to toe, elongated, perimeter weighted cavity located solely in said lower portion of said rear surface; said cavity extending from adjacent said heel to adjacent said toe; said upper portion being further defined as a non-perimeter weighted, blade type iron structure, having a generally uniform thickness from said heel to said toe; said lower portion having a thickness becoming progressively thicker as it extends from the upper portion toward said bottom sole; said club head having a thickness between said elongated cavity and said ball striking face that is thinner than the thickness between the non-cavity upper portion and said ball striking face.