US 11,771,961 B2
Golf club head with lattices
Cole D. Brubaker, Scottsdale, AZ (US); Alex G. Woodward, Phoenix, AZ (US); and Erik M. Henrikson, Phoenix, AZ (US)
Assigned to KARSTEN MANUFACTURING CORPORATION, Phoenix, AZ (US)
Filed by KARSTEN MANUFACTURING CORPORATION, Phoenix, AZ (US)
Filed on Sep. 14, 2021, as Appl. No. 17/447,690.
Claims priority of provisional application 63/078,257, filed on Sep. 14, 2020.
Prior Publication US 2022/0080270 A1, Mar. 17, 2022
Int. Cl. A63B 53/04 (2015.01)
CPC A63B 53/0412 (2020.08) [A63B 53/047 (2013.01); A63B 53/0487 (2013.01); A63B 2209/00 (2013.01)] 21 Claims
OG exemplary drawing
 
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.