Patent ID: 11890516
Assignee: TAYLOR MADE GOLF COMPANY, INC.
Field: Furniture, games (Other fields)
Classification: CPC A | IPC A

Claim 0:
1. An iron-type golf club head, comprising:
a body, comprising a heel portion, a sole portion, a toe portion, a top-line portion, a front portion, and a rear portion, wherein the rear portion comprises a rear opening and a sole bar, the rear opening having a total area of at least 400 mm{circumflex over ( )}2, and wherein the front portion comprises a strike face and a back surface opposite the strike face;
a rear fascia, coupled to the rear portion of the body and covering the rear opening;
an internal cavity, defined between the back surface of the front portion and a front surface of the rear fascia and further defined between the back surface of the front portion and the sole bar, wherein the internal cavity is unfilled; and
stiffening material, within the internal cavity and in contact with the back surface of the front portion and a forward-facing surface of the sole bar, wherein the stiffening material is insertable, through the rear opening, into the internal cavity before the rear fascia is coupled to the rear portion of the body, and wherein the stiffening material is positioned within the internal cavity at a location between the back surface of the front portion and the sole bar;
wherein the iron-type golf club head has coefficient of restitution (COR) change value between −0.015 and +0.008, the COR change value being defined as a difference between a measured COR value of the iron-type golf club head and a calibration plate COR value;
wherein a characteristic time (CT) at a geometric center of the strike face is at least 250 microseconds;
wherein a maximum thickness of the front portion, at the strike face, is less than or equal to 3.5 millimeters;
wherein the front portion, at the strike face, excluding grooves, has a minimum thickness between, and inclusive of, 1.1 millimeters and 2.2 millimeters; and
wherein the rear fascia is made of a material having a density between, and inclusive of, 0.9 g/cc and 5 g/cc.