Patent ID: 9265995
Filing Date: 2016-02-23
CPC Classification: A63B,B23P,Y10T

Claim Text:
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 having an unsupported face area of between about 300 mm 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 located within the enclosed cavity, the at least one plug being compressed between the rear surface of the striking face and the back wall in the rear portion; 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, the golf club head defining an aperture into the enclosed cavity, the aperture being configured to allow the cavity to be filled with the filler material; wherein the unsupported face area includes a thickened central region; wherein the at least one plug is positioned to be in contact with at least a portion of the thickened central region; and wherein the at least one plug occupies less than 20% of the total club head cavity volume in the enclosed cavity.