Gas-operated firearm with adjustable gas pressure selector

Patent metadata

Field	Value
Publication number	US-11118853-B2
Application number	US-202017061784-A
Country	US
Kind code	B2
Filing date	Oct 2, 2020
Priority date	Oct 4, 2019
Publication date	Sep 14, 2021
Grant date	Sep 14, 2021

Abstract

Gas-operated firearms, in which the gas system guides gas selectively from the gas removal bore to a gas pipe, with a platelet, movable between at least two positions in the gas system. The platelet may be pivotable about a pivot axis pin. A stop pin, parallel to the pivot axis pin, may protrude into a stop bore of the platelet, thus delimiting the pivoting. The platelet may have at least two recessed catch positions, into which a catch, under the effect of a catch spring, optionally engages, provided that the gas through-bore associated with the catch comes to rest in alignment between the gas bores when the catch engages in one of the recesses.

First claim

What is claimed is:

1. A gas-operated firearm, comprising:
a barrel, the barrel defining a gas removal bore; and
a gas diversion system configured to guide a gas selectively from the gas removal bore to a gas pipe that, in turn, delivers the gas to a gas-operated reloading mechanism of the firearm; wherein the gas diversion system includes:
a lower gas bore fluidly coupled to the gas removal bore, and an upper gas bore fluidly coupled to the gas pipe, such that the lower gas bore and the upper gas bore are disposed in alignment, and the lower gas bore and the upper gas bore are separated by a movable platelet;
a pivot axis pin that is fixed within the gas diversion system around which the movable platelet is pivotable, where an axis of the pivot axis pin is parallel to an axis of the upper gas bore and the lower gas bore;
a stop pin that is fixed within the gas diversion system and is parallel to the axis of the pivot axis pin, the stop pin protruding into a stop bore defined in the movable platelet such that interaction between the stop pin and a wall of the stop bore limits pivotable movement of the movable platelet; and
a catch, urged by an associated catch spring, configured to engage one of at least two recessed catch positions defined in the movable platelet, wherein when the catch is engaged in one of the at least two recessed catch positions, the lower gas bore and the upper gas bore are disposed in alignment with one of at least two gas through-bores defined in the movable platelet, each gas through-bore corresponding to one of the at least two recessed catch positions; and each gas through-bore having a different cross-section;
such that by selectively moving the movable platelet between at least two positions in the gas diversion system, the gas being guided by the gas diversion system passes from the lower gas bore to the upper gas bore through the gas through-bore having a desired cross-section.

2. The firearm according to claim 1 , wherein any two adjacent recessed catch positions merge into one another.

3. The firearm according to claim 1 , wherein the movable platelet has a defined outline, and the outline defines at least one anti-slip notch.

4. The firearm according to claim 3 , wherein the at least one defined anti-slip notch corresponds geometrically to a projectile side of a cartridge designed for the firearm.

5. The firearm according to claim 1 , wherein the movable platelet is disposed substantially horizontally in the gas diversion system.

6. The firearm according to claim 5 , wherein the pivotable movement of the movable platelet occurs in a horizontal plane.

7. The firearm according to claim 1 , wherein the firearm is an automatic or semi-automatic long gun.

8. The firearm according to claim 1 , wherein the firearm is an automatic or semi-automatic rifle.

9. A gas diversion system, comprising:
a gas diversion system body that is configured to be mated to a barrel of a firearm;
a lower gas bore defined in the gas diversion system body, that is configured to align with a bore defined in the barrel of the firearm when the gas diversion system body is mated to the barrel;
an upper gas bore defined in the gas diversion system body in alignment with the lower gas bore and separated from the lower gas bore by a gap in the gas diversion system body;
a movable platelet disposed within the gap in the gas diversion system body; wherein
the movable platelet is pivotable within the gap around a pivot axis pin that is parallel to an axis of the upper and lower gas bores;
the movable platelet defines an internal stop bore, and an interaction between a stop pin extending into the gap in the gas diversion system body and the stop bore limits a pivotable movement of the movable platelet;
the movable platelet further defines at least two recessed catch positions, the at least two recessed catch positions being positioned so that a catch urged by a catch spring can positively engage any one of the at least two recessed catch positions;
the movable platelet further defines at least two gas through-bores, each gas through-bore having a different cross-section, and each gas through-bore being positioned so that it is aligned with the lower gas bore and the upper gas bore when the catch positively engages one of the at least two recessed catch positions;

such that by selectively pivoting the movable platelet within the gap in the gas diversion system body, the gas diversion system defines a passage from the bore defined in the barrel of the firearm to an exit of the upper gas bore that includes a portion having a desired cross-section.

10. The gas diversion system according to claim 9 , wherein the pivot axis pin passes through a central portion of the movable platelet.

11. The gas diversion system according to claim 9 , wherein the movable platelet has an outline that is generally shaped like an hourglass, or an elongate trapezoid.

12. The gas diversion system according to claim 11 , wherein the outline of the movable platelet defines at least two anti-slip notches that are symmetrically disposed with respect to a long axis of the platelet.

13. The gas diversion system according to claim 9 , wherein the gas diversion system body defines a cylindrical channel that is configured to receive the barrel of the firearm.

Assignees

• Glock Tech Gmbh

Inventors

• Markut Karl

Classifications

• F41A5/28 Primary

  Adjustable systems · CPC title

• F41A5/24

  by direct action of gas pressure on bolt or locking elements · CPC title