CPC A63B 53/0475 (2013.01) [A63B 60/54 (2015.10); A63B 2053/0479 (2013.01); A63B 2209/00 (2013.01)] | 20 Claims |
1. A golf club head comprising:
a hollow body portion having a face portion, the face portion comprising:
a front surface configured to strike a golf ball, the front surface comprising two or more front groove portions;
a back surface opposite the front surface;
a face perimeter portion having a perimeter edge defined by a face toe edge, a face heel edge, a face top edge, and a face sole edge;
a face recess portion on the back surface and in the face perimeter portion, the face recess portion comprising a toe-side wall proximate to the face toe edge, a heel-side wall proximate to the face heel edge, a top-side wall proximate to the face top edge, and a sole-side wall proximate to the face sole edge;
two or more back groove portions in the face recess portion, the two or more back groove portions comprising a first back groove portion extending in a top-to-sole direction proximate to the toe-side wall of the face recess portion, a second back groove portion extending in a toe-to-heel direction proximate to the top-side wall of the face recess portion, and a third back groove portion extending in a top-to-sole direction proximate to the heel-side wall of the face recess portion;
a first face portion thickness defined by a distance between the front surface of the face portion and the back surface of the face portion at a location on the face portion without the two or more front groove portions, without the face recess portion, and without the two or more back groove portions;
a second face portion thickness defined by a distance between the front surface of the face portion and a bottom of the face recess portion at a location on the face portion without the two or more front groove portions and without the two or more back groove portions;
a third face portion thickness defined by a distance between a bottom of a front groove portion of the two or more front groove portions and the back surface of the face portion at a location on the face portion without the face recess portion and without the two or more back groove portions;
a fourth face portion thickness defined by a distance between the front surface of the face portion and a bottom of a back groove portion of the two or more back groove portions at a location on the face portion without the two or more front groove portions;
a fifth face portion thickness defined by a distance between a bottom of a front groove portion of the two or more front groove portions and a bottom of the face recess portion at a location on the face portion without the two or more back groove portions; and
a sixth face portion thickness defined by a distance between a bottom of a front groove portion of the two or more front groove portions and a bottom of a back groove portion of the two or more back groove portions at a location on the face portion having both a front groove portion of the two or more front groove portions and an opposing back groove portion of the two or more back groove portions,
wherein the first face portion thickness is greater than the second face portion thickness, and the first face portion thickness is greater than the third face portion thickness,
wherein the second face portion thickness is greater than the fourth face portion thickness, the second face portion thickness is greater than the fifth face portion thickness, and the second face portion thickness is greater than the sixth face portion thickness,
wherein the third face portion thickness is greater than the fourth face portion thickness, the third face portion thickness is greater than the fifth face portion thickness, and the third face portion thickness is greater than the sixth face portion thickness,
wherein the fourth face portion thickness is greater than the fifth face portion thickness, and
wherein the fifth face portion thickness is greater than the sixth face portion thickness.
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