Patent ID: 7309296
Filing Date: 2007-12-18
Classification: A63B

Abstract:
1. A golf club head comprising: a body having a front face, a rear surface and a cavity extending from said front face toward said rear surface, said cavity having a central region, a perimeter region and a bottom surface; a face insert disposed in the cavity, said face insert having a front surface and a back surface, said front surface forming a striking surface on the front face of said body; a substrate disposed in said cavity sandwiched between the back surface of said face insert and the bottom surface of said cavity, said substrate including a plurality of elongate rod elements each having a first end, a second end and a side surface, said plurality of elongate rod elements arranged in a parallel closely packed array such that the side surface of each of said plurality of elongate rod elements is in contact with the side surface of an adjacent one of said plurality of elongate rod elements, the first ends of said plurality of elongate rod elements facing the bottom surface of said cavity and the second ends of said plurality of elongate rod elements supporting at least a portion of the back surface of said face insert, said elongate rod elements being selected to provide greater resiliency proximal said central region and a lower resiliency proximal said perimeter region; and said substrate having a thickness dimension measured between the first and second ends of said elongate rod elements which is larger proximal the central region of said cavity and smaller proximal the perimeter region of said cavity.