CPC A63B 53/0487 (2013.01) [A63B 53/065 (2013.01); A63B 60/02 (2015.10); A63B 53/047 (2013.01); A63B 53/0408 (2020.08); A63B 53/0437 (2020.08); A63B 53/0441 (2020.08); A63B 53/0466 (2013.01); A63B 2053/0491 (2013.01)] | 20 Claims |
1. A golf club head comprising:
a body portion including toe portion, a heel portion, a front portion, a rear portion, a top portion, and a sole portion;
a face portion located at the front portion, the face portion including a front surface and a rear surface opposite the front surface;
a plurality of grooves on the front surface of the face portion, the plurality of grooves comprising a first plurality of grooves; and a second plurality of grooves intersecting the first plurality of grooves;
a plurality of projections on the front surface of the face portion, each projection of the plurality of projections corresponding to a raised structure occupying an intersectional space between two adjacent grooves of the first plurality of grooves and two adjacent grooves of the second plurality of grooves;
an interior cavity enclosed within the body portion; and
a filler material partially or entirely filling the interior cavity,
wherein the first plurality of grooves and the second plurality of grooves have bases that are coplanar,
wherein the plurality of projections have peak surfaces that are coplanar,
wherein the face portion defines a front cavity wall having a first thickness less than or equal to 0.055 inch (1.397 mm) and a second thickness less than or equal to 0.045 inch (1.143 mm),
wherein the first thickness is measured between the rear surface of the face portion and a peak surface of a projection of the plurality of projections,
wherein the second thickness is measured between the rear surface of the face portion and a base of a groove of one of the first plurality of grooves and the second plurality of grooves,
wherein the golf club head has a total volume (Vt) greater than or equal to 2.50 inch3 (40.968 cm3) and less than or equal to 9.00 inch3 (147.484 cm3) and a total mass (Mt) greater than or equal to 300 grams and less than or equal to 400 grams,
wherein the filler material includes a polymer material contacting the rear surface of the face portion,
wherein the filler material has a fill volume (Vf) and a fill mass (Mf), and
wherein a ratio between a percentage fill volume
and a percentage fill mass
of the filler material is greater than or equal to 3.562.
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