CPC A63B 53/0412 (2020.08) [A63B 53/047 (2013.01); A63B 53/0487 (2013.01); A63B 2209/00 (2013.01)] | 21 Claims |
19. A golf club head comprising:
a face;
a rear;
a toe end;
a heel end opposite the toe end;
a top rail;
a sole opposite the top rail;
a hosel;
a latticed region comprising a plurality of lattice units, each lattice unit comprising a unit scaffolding surrounded by empty space;
wherein:
the golf club head comprises a total volume, a total mass, and a center of gravity;
the face, the rear, the top rail, and the sole enclose an internal cavity;
the latticed region is located within the internal cavity;
the latticed region comprises a lattice mass, a total latticed region volume, a filled volume;
the filled volume is the volume occupied by the unit scaffolding of the plurality of lattice units; and
the filled volume is between 5% and 50% of the total latticed region volume;
each lattice unit comprises a total unit volume, a filled unit volume, and an effective density;
across the plurality of lattice units, an increase in the filled unit volume of each lattice unit increases the effective density of said lattice unit;
the effective density of the plurality of lattice units increases from the sole towards the top rail of the golf club head within a region that is towards the toe end from the center of gravity;
the effective density of the plurality of lattice units decreases from the sole towards the top rail of the golf club head within a region that is towards the heel end from the center of gravity;
a y-axis extends through the center of gravity from the top rail to the sole;
an x-axis extending through the center of gravity from the heel end to the toe end, wherein the x-axis is perpendicular to the y-axis;
a z-axis extending through the center of gravity from the face to the rear, wherein the z-axis is perpendicular to the y-axis and the x-axis;
the golf club head comprises a plurality of regions including a high-toe region, a low-toe region, a high-heel region, and a low-heel region; wherein the plurality of regions are divided by the x-axis and the y-axis;
the golf club head has a top rail to sole moment of inertia Iyy, a heel to toe moment of inertia Ixx, a face to rear moment of inertia Izz, a product of inertia Ixy about the x-axis and y-axis, and a product of inertia Ixz about the x-axis and the z-axis;
the Ixy product of inertia is between −10 g·in2 and −40 g·in2; and the Ixz product of inertia is between −25 g·in2 and −65 g·in2; and
wherein:
from a front view, the low-heel region is bounded by a line defined, with reference to the y-axis and the x-axis, by the equation: y=(0.35/x);
from the front view, the high-toe region is bounded by a line defined, with reference to the y-axis and the x-axis, by the equation: y=(0.35/x);
from the front view, the high-heel region is bounded by a line defined, with reference to the y-axis and the x-axis, by the equation: y=−(0.35/x); and
from the front view, the low-toe region is bounded by a line defined, with reference to the y-axis and the x-axis, by the equation: y=−(0.35/x), wherein x and y are measured in inches.
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