DEVICE TO DAMP SOUND OF SHOT Russian patent published in 2011 - IPC F41A21/30 

FIELD: weapon and ammunition.

SUBSTANCE: device comprises case, barrel of weapon with muzzle part of channel for passage of bullet and powder fumes. Case is fixed on external surface of weapon barrel with the help of plate and is arranged with holes, one of which is arranged as stepped. Stepped hole is arranged perpendicularly to channel of weapon barrel and is connected to it. Larger step of stepped hole is arranged in upper part of case and is closed with cover, and diametre of smaller step of stepped hole is not more than diametre of hole coaxial to it and arranged in weapon barrel. Upper part of stepped hole is joined by inclined channel with inclined hole arranged in weapon barrel and directed towards entry of powder fumes. The first drainage hole is arranged in case in upper part of stepped hole oppositely to inclined hole, and the second drainage hole is made underneath. The third drainage hole is provided in lower part of larger step of stepped hole. Spring-loaded stepped valve is installed in stepped hole of case, and its spring is arranged between lower end ring surface of larger diametre step and according case surface. Lower part of smaller diametre step of valve is located in smaller step of stepped hole of case and in according hole of weapon barrel. Cylindrical ledge is arranged on upper end surface of larger diametre step of valve, with the possibility of contact with case cover in upper position of valve. External cylindrical surface of larger diametre step of valve is located with the possibility to cover section of the second drainage hole of body. In inclined channel of case, perpendicularly to its axis, there is a lock installed in the form of cylindrical rod, where grooves are serially arranged near end with stop rings, as well as two through holes, one of which is arranged in the middle part of rod, and the second hole is arranged with thread and located at the angle of 90 degrees relative to the first hole, and is equipped with fixator in the form of screw. Hollow jacket with through slots is fixed to body at side of its drainage holes with gap. Additional drainage hole that communicates barrel channel with environment is arranged in channel of barrel downstream valve.

EFFECT: reduced sound of shot without decrease in bullet speed.

5 dwg