(Карл Дж. Кампэгнуоло, Пол А. Курто. Миномет с переменной зарядной
камерой для регулировки начальной скорости и с одним пороховым
зарядом).
U.S. Patent
3946637. Mar. З0, 1976. – 7 p. A variably adjusted vent communicates with the interior of a mortar tube. By adjusting the vent setting, the velocity of a single charge cartridge can be varied. In one embodiment of the invention, the vent discharge is exhausted below the base plate of the mortar to stabilize the mortar during firing.
3946637. Mar. З0, 1976. – 7 p. A variably adjusted vent communicates with the interior of a mortar tube. By adjusting the vent setting, the velocity of a single charge cartridge can be varied. In one embodiment of the invention, the vent discharge is exhausted below the base plate of the mortar to stabilize the mortar during firing.