Training weapon system for recoilless antitank rifle weapons

Patent metadata

Field	Value
Publication number	US-9267754-B2
Application number	US-201013697444-A
Country	US
Kind code	B2
Filing date	May 11, 2010
Priority date	May 11, 2010
Publication date	Feb 23, 2016
Grant date	Feb 23, 2016

Abstract

The invention relates to a training weapon system ( 1 ) intended for a recoilless antitank rifle ( 2 ), the training weapon system ( 1 ) comprising a sub-caliber barrel ( 3 ) for firing sub-caliber practice projectiles ( 4 ) provided with base plates ( 5 ), the sub-caliber barrel ( 3 ) being arranged in a shell-like body ( 6 ) in the barrel ( 7 ) of the recoilless antitank rifle ( 2 ), the front part of the sub-caliber barrel ( 3 ) being fitted in a guide part ( 8 ) for centering the barrel ( 3 ), and a rear part of the barrel ( 3 ) being fitted in a breech ( 9 ), comprising a firing channel ( 10 ) and a nozzle screw thread ( 11 ) for fitting a nozzle screw ( 12 ), which is arranged in the rear part of the shell-like body ( 6 ). The invention is characterized in that the training weapon system ( 1 ) comprises at least one locking part ( 13, 14 ), the function of which is to prevent the nozzle screw ( 12 ) or the base plate ( 5 ) of the projectile ( 4 ) or part of the base plate ( 5 ) being expelled backwards through the nozzle funnel ( 21 ) of the antitank rifle ( 2 ) as loose flying projectiles.

First claim

The invention claimed is:

1. A training weapon system intended for a recoilless antitank rifle, the training weapon system comprising a sub-calibre barrel for firing sub-calibre practice projectiles provided with base plates, the sub-calibre barrel being arranged in a shell-like body in a barrel of the recoilless antitank rifle, a front part of the sub-calibre barrel being fitted in a guide part for centering the barrel, and a rear part of the barrel being fitted in a breech, comprising a firing channel and a nozzle screw thread for fitting a nozzle screw, which is arranged in a rear part of the shell-like body, wherein the training weapon system comprises at least one locking part, the function of which is to prevent the nozzle screw or the base plate of the projectile or part of the base plate being expelled backwards through a nozzle funnel of the antitank rifle as loose flying projectiles.

2. The training weapon system according to claim 1 , wherein the locking part comprises a flange arranged on the nozzle screw and that said flange is designed, in the event of a fracture in the nozzle screw thread, to prevent the nozzle screw being released from the nozzle screw thread and being expelled backwards through the nozzle funnel of the antitank rifle as a loose flying projectile.

3. The training weapon system according to claim 2 , wherein the flange is designed with an outside diameter which is greater than the inlet diameter to the nozzle funnel of the antitank rifle, in order thereby to prevent the passage of the nozzle screw.

4. The training weapon system according to claim 1 , wherein the rear plane of the breech comprises a countersunk depression, the shape of which corresponds to the shape of the flange.

5. The training weapon system according to claim 1 , wherein the locking part comprises a safety catch, which is arranged in the breech, the safety catch being designed to prevent closing of an end piece of the antitank rifle when the nozzle screw has not been fitted, in order thereby to prevent firing of the training weapon and hence the associated formation of loose flying splinters from the base plate of the projectile due to high back pressure.

6. The training weapon system according to claim 5 , wherein the safety catch comprises a pre-tensioned cotter, the cotter being pre-tensioned by a spring and moveably arranged in a cylindrical housing countersunk in the rear plane of the breech.

7. The training weapon system according to claim 2 , wherein the rear plane of the breech comprises a countersunk depression, the shape of which corresponds to the shape of the flange.

Assignees

• Liljeholm Johnny
• Saab Ab

Inventors

• Liljeholm Johnny

Classifications

• F41F3/045

  adapted to be carried and used by a person, e.g. bazookas (F41F3/042 takes precedence) · CPC title

• F41A33/00 Primary

  Adaptations for training (adaptations of barrels for recoil reinforcement F41A21/26); Gun simulators (teaching or practice apparatus for gun-aiming or gun-laying F41G3/26 {; shooting games A63F9/02; military simulation G09B9/003}) · CPC title

• F41A21/10

  Insert barrels, i.e. barrels for firing reduced calibre ammunition and being mounted within the normal barrels · CPC title

• F41A1/08

  Recoilless guns, i.e. guns having propulsion means producing no recoil · CPC title

• G09B25/00

  Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes (model vehicles, tracks therefor, models in the nature of toys A63H) · CPC title