Patent ID: 8088025
Filing Date: 2012-01-03
Classification: A63B,B23P,Y10T

Abstract:
1. A hollow iron-type golf club head comprising: a heel portion, a sole portion, a toe portion, a top-line portion, a front portion, a rear portion, and a striking face; a back wall in the rear portion enclosing a substantial portion of the rear portion to create a substantially enclosed cavity, the enclosed cavity being defined by at least a rear surface of the striking face, an inner back wall surface, and the sole portion; at least one plug and a filler material located within the enclosed cavity, the filler material substantially surrounding the at least one plug and being configured to hold the at least one plug in place, wherein the filler material occupies about 50% to about 99% of the total club head cavity volume in the enclosed cavity and wherein the filler material and the at least one plug have a combined weight of less than about 10 g.