Bore evacuators, i.e. chambers disposed around barrels for storing part of the combustion gas and subsequently injecting it into the barrel to provide suction

Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems > Evacuating combustion gas from barrels > Bore evacuators, i.e. chambers disposed around barrels for storing part of the combustion gas and subsequently injecting it into the barrel to provide suction

Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems > Evacuating combustion gas from barrels (F41A13/10 takes precedence) > Bore evacuators, i.e. chambers disposed around barrels for storing part of the combustion gas and subsequently injecting it into the barrel to provide suction