摘要:
A monolithic barrel for a weapon has an integral suppressor. The barrel and integral suppressor can be machined from a single piece of material, which can eliminate the need to attach separate components to the barrel. The monolithic barrel has a barrel bore for firing a projectile that produces discharge gas. To suppress the discharge, the barrel defines one or more baffles separating expansion chambers toward a distal end of the barrel. The barrel further defines one or more channels along the length of the barrel that provide extend flow paths for the discharge gas from the barrel's bore. Greater reductions in sound can be achieved relative to the overall barrel length due to the integral suppressor.
摘要:
A composite projectile barrel is disclosed comprising a continuous fiber composite outer shell whose average effective coefficient of thermal expansion in the longitudinal direction approximately matches that of an inner liner. In one embodiment, the composite barrel comprises PAN precursor carbon fiber and a thermoset epoxy resin, with the carbon fiber wound at varying winding angles to form a plurality of regions within the outer shell. The finished barrel exhibits light weight, superior axial stiffness and strength, durability, and is reliably accurate.
摘要:
A rifle barrel (10, 10b, 10c, 10d) for a gas-operated rifle includes a metallic liner (14, 14b, 14c, 14d) with a longitudinal bore and a transverse gas port (22, 22d) through the liner to the bore intermediate along a length of the liner. A thermally conductive sleeve (26, 26b, 26c, 26d) circumscribes the liner substantially along the length of the liner. A composite wrap circumscribes (30, 30b, 30c, 30d) the sleeve substantially along a length of the sleeve. The composite wrap is separated from the gas port.
摘要:
The invention relates to an insertion tube (1) for firing sub-calibre ammunition bodies (20) using a high calibre weapon (10). Said insertion tube can be inserted into the charge chamber (11) of the weapon (10) and the tube wall (2) of the insertion tube (1) comprises penetrating recesses (3) for compensating pressure differences between the inside of the insertion tube (1) and the charge chamber (11). The invention also relates to a weapon comprising an insertion tube (1) which can be inserted into the charge chamber (11) of the weapon (10) for firing a sub-calibre ammunition body (20), said insertion tube (1) being designed in the above-mentioned manner.
摘要:
A rifle barrel (10, 10b, 10c, 10d) for a gas-operated rifle includes a metallic liner (14, 14b, 14c, 14d) with a longitudinal bore and a transverse gas port (22, 22d) through the liner to the bore intermediate along a length of the liner. A thermally conductive sleeve (26, 26b, 26c, 26d) circumscribes the liner substantially along the length of the liner. A composite wrap circumscribes (30, 30b, 30c, 30d) the sleeve substantially along a length of the sleeve. The composite wrap is separated from the gas port.
摘要:
A method of forming a boron nitride. The method comprises contacting a metal article with a monomeric boron-nitrogen compound and converting the monomeric boron- nitrogen compound to a boron nitride. The boron nitride is formed on the same or a different metal article. The monomeric boron-nitrogen compound is borazine, cycloborazane, trimethylcycloborazane, polyborazylene, B-vinylborazine, poly(B-vinylborazine), or combinations thereof. The monomeric boron-nitrogen compound is polymerized to form the boron nitride by exposure to a temperature greater than approximately 100°C. The boron nitride is amorphous boron nitride, hexagonal boron nitride, rhombohedral boron nitride, turbostratic boron nitride, wurzite boron nitride, combinations thereof, or boron nitride and carbon. A method of conditioning a ballistic weapon and a metal article coated with the monomeric boron-nitrogen compound are also disclosed.
摘要:
This invention encompasses articles, compositions, and methods that provide enhanced corrosion resistance and wear resistance to firearms, firearm components, and firearm accessories. In one aspect, for example, a substrate (1) comprising a firearm component is coated with a first layer of a corrosion- resistant material (5) such as a first metal, followed by a second thin film layer of an abrasion-resistant material (10) such as a second metal, a ceramic material such as a metal nitride, diamond-like carbon material, or other materials.
摘要:
A composite barrel for a firearm and method for forming by forging. The barrel includes at least two materials joined together by forging. In a preferred embodiment, at least one material is preferably lighter in weight than the other material. The barrel may include an inner tube and an outer sleeve. The inner tube defines a bore that provides a bullet path and in one embodiment may be made of steel or alloys thereof. The outer sleeve surrounds the inner tube and in some embodiments may be made of aluminum, titanium, or alloys of either thereof. The tube preferably includes an exterior surface containing recessed areas therein for receiving material displaced from the outer sleeve by the forging process. The preferred barrel forming method generally may include inserting the tube into the sleeve, striking an outer surface of the sleeve, and deforming the sleeve to force material to flow into the recessed exterior surface of the tube to bond the tube and sleeve together. The method of forming may be used to produce long and short barrels for rifles and handguns respectively, and more broadly to produce other composite components unrelated to firearms.
摘要:
An electrical energy-insulating, preferably ceramic, insert (15) which is fitted in a barrel (2) is adapted in order to prevent electrical energy transmission (16) from an electric igniter (3) to a barrel body on firing of an ammunition unit (11) which can be initiated with the electric igniter (3) . The insert is arranged in a position for firing of the ammunition unit. By means of the invention, a simple solution is obtained to the problem of electrical energy transmission by virtue of the fact that other measures do not have to be taken, for example the cases of the ammunition units do not have to be adapted by complicated and cost-increasing measures.
摘要:
Provided is a methodology and system (1) for applying coatings onto the interior surfaces of components (40). The approach comprises a vapor creation device (3) (for example an electron beam or laser that evaporates a single or multiplicity of solid or liquid sources), a vacuum chamber (4) having a moderate gas pressure (between about 10