Patent ID: 11933564
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A firearm barrel comprising:
an inner layer; and
a shroud;
wherein the inner layer surrounds a concentric bore and has an outer diameter;
wherein the inner layer comprises an unperforated core that directly surrounds the concentric bore and a perforated core that surrounds the unperforated core;
wherein the shroud surrounds the perforated core; and
wherein the perforated core is comprised of a plurality of equilateral triangular cutouts and a plurality of circular cutouts in a grid pattern that is configured to form structural ribs between the unperforated core and the outer diameter of the inner layer;
wherein the grid pattern is comprised of a repeating and overlapping series of arrays;
wherein each array is comprised of a central circular cutout surrounded by six equally spaced equilateral triangular cutouts, each of the equilateral triangular cutouts having three tips;
wherein a circular cutout is situated at each of the three tips of each equilateral triangular cutout; and
wherein each circular cutout is aligned with an axis of symmetry of each of the equilateral triangular cutouts.