Patent ID: 8753230

Claim:
A golf club head set comprising: a first club head comprising: a first strike face; a first back face opposite the first strike face; a first top end; a first bottom end opposite the first top end; a first toe end; a first toe region comprising the first toe end; a first heel end opposite the first toe end; a first heel region comprising the first heel end; and a first vertical axis extended substantially perpendicularly to a horizontal centerline of the first back face, located approximately mid-way between the first toe end and the first heel end, extended through the first top end and the first bottom end, and demarcating the first heel region from the first toe region; wherein: the first back face comprises: a perimeter weight extending along at least the first top end and the first bottom end of the first club head; a first hourglass support traversed by the first vertical axis and extended entirely from a top portion of the perimeter weight to a bottom portion of the perimeter weight; a first cavity located only at the first toe region and comprising: a first cavity base; and a first cavity wall bounding at least a portion of the first cavity base; and a first bar within the first cavity and comprising a first bar axis extending throughout a length centerline of the first bar; the first bar protruded from the first cavity base and extending diagonally, relative to the first vertical axis, across at least a first portion of the first cavity; and the first bar axis intersected with the first vertical axis and extending therefrom towards the first toe end and the first top end; the first hourglass support comprises: top and bottom hourglass portions; a middle hourglass portion narrower than the top and bottom hourglass portions; and heel and toe hourglass sidewalls defining the top, middle, and bottom hourglass portions of the first hourglass support therebetween; the perimeter weight protrudes above the first cavity base and defines one portion of the first cavity wall at the first toe region; the first hourglass support protrudes above the first cavity base and defines another portion of the first cavity wall at the first toe region; and a minimum thickness of the first cavity wall protruded above the first cavity base is greater than a maximum thickness of the first bar protruded above the first cavity base.