RU2243472C1 - Weapon barrel for cartridge with rubber bullet - Google Patents

Abstract

FIELD: armament.

SUBSTANCE: the barrel has a bore limited by diameter d, and rifles limited by diameter D. The bore section together with the grooves is made in the form of a triangle. The relation of the mentioned diameters is as follows: D/D>1.7.

EFFECT: prevented fire by metal (inflexible) bullets.

2 cl, 1 dwg

Description

The invention relates to weapons technology, namely to gun barrels for a cartridge with a rubber bullet.

Known barrel described in the book "9mm Parabellumm WAFFE UND PATRONE", authors KLAUS - PETER KONIG \ MARTIN HUGO, publisher MOTORBUCH VERLAG STUTTGART, Aublage 1988, p. 75, taken as a prototype. The trunk contains a channel made with spiral grooves and grooves. The diameter of the grooves is 9.1 mm, and the diameter of the grooves is 8.85. The ratio of these diameters is 1.02. In such products (combat), this ratio can be 1.1 max. Rifling for this barrel serves to give the bullet rotation. A channel with a large ratio is not used due to the loss of pressure of the powder gases passing through the grooves. This barrel can be used when shooting with rubber bullets and this product becomes a weapon of traumatic action.

The disadvantage of this barrel in firearms is that weapons with this barrel can be used by a limited circle of people, because along with firing with rubber bullets, it can shoot metal. Such weapons as traumatic weapons do not meet the criminalistic requirements of the Ministry of Internal Affairs of the Russian Federation.

It is required to create weapons of traumatic action, which could fire rubber (elastic) bullets, but in no case metal (hard) ones.

This problem is solved using a barrel containing a channel with grooves with its restrictive diameters, where the restrictive diameters of the channel and grooves are made in the following ratio:

where D is the limiting diameter of the grooves;

d is the restrictive diameter of the channel;

wherein the channel cross-sectional shape together with the grooves is made in the form of a triangle.

This solution allows you to fire only with a rubber (elastic) bullet, which, when pressure is created, deforms and fills the grooves and under the influence of this pressure gains kinetic energy. When shooting metal (hard) bullets, powder gases will freely pass between the bullet and the walls of the grooves (the metal bullet is less deformed) and the bullet will not gain specific kinetic energy of more than 0.5 J / mm, which meets the criminalistic requirements of the Ministry of Internal Affairs of the Russian Federation.

The invention is illustrated in the drawing, which shows a cross section of the barrel.

The barrel 1 contains a channel 2, limited by the diameter d and grooves 3, limited by the diameter D. The cross section of the channel 2 together with the grooves 3 is made in the form of a triangle. The ratio of these diameters is as follows:

When shooting with rubber bullets, when the diameter ratio of 1.7 is fulfilled, the bullet under pressure of the powder gases is deformed and fills the entire free section, both channel 2 and grooves 3. When the ratio of diameters is much larger, for example 2.5, then - due to the breakthrough of gases between the rubber bullet and the wall of the grooves, the automation of the weapon deteriorates. The optimal ratio of 1.7-2.3. With a decrease in the ratio of diameters, the specific kinetic energy of metal (hard) bullets increases, which does not meet the criminalistic requirements of the Ministry of Internal Affairs of the Russian Federation.

Claims (2)

1. The barrel containing the channel with grooves, characterized in that the restrictive diameters of the channel and grooves are made in the following ratio:

, where D is the limiting diameter of the grooves; d is the restrictive diameter of the channel. 2. The barrel according to claim 1, characterized in that the cross-sectional shape of the channel together with the grooves is made in the form of a triangle.